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AM29PDS322D
Data Sheet
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Publication Number 23569 Revision A
Amendment +4 Issue Date August 7, 2002
ADVANCE INFORMATION
AM29PDS322D
32 Megabit (2 M x 16-Bit) CMOS 1.8 Volt-only (1.8 V to 2.2 V) Simultaneous Read/Write Page-Mode Boot Sector Flash Memory
DISTINCTIVE CHARACTERISTICS
ARCHITECTURAL ADVANTAGES s Simultaneous Read/Write operations -- Data can be continuously read from one bank while executing erase/program functions in other bank. -- Zero latency between read and write operations s Page Mode Operation -- 4 word page allows fast asynchronous reads s Dual Bank architecture -- One 4 Mbit bank and one 28 Mbit bank s SecSi (Secured Silicon) Sector: Extra 64 KByte sector -- Factory locked and identifiable: 16 byte Electronic Serial Number available for factory secure, random ID; verifiable as factory locked through autoselect function. ExpressFlash option allows entire sector to be available for factory-secured data -- Customer lockable: Can be read, programmed, or erased just like other sectors. Once locked, data cannot be changed s Zero Power Operation -- Sophisticated power management circuits reduce power consumed during inactive periods to nearly zero. s Package options -- 48-ball FBGA s Top or bottom boot block s Manufactured on 0.23 m process technology s Compatible with JEDEC standards -- Pinout and software compatible with single-power-supply flash standard PERFORMANCE CHARACTERISTICS s High performance -- Access time as fast 40 ns (100 ns random access time) at 1.8 V to 2.2 V VCC -- Random access time of 100 ns at 1.8 V to 2.2 V VCC will be required as customers migrate downward in voltage s Ultra low power consumption (typical values) -- 2.5 mA active read current at 1 MHz for initial page read -- 24 mA active read current at 10 MHz for initial page read -- 0.5 mA active read current at 10 MHz for intra-page read -- 1 mA active read current at 20 MHz for intra-page read -- 200 nA in standby or automatic sleep mode s Minimum 1 million write cycles guaranteed per sector s 20 year data retention at 125C -- Reliable operation for the life of the system SOFTWARE FEATURES s Data Management Software (DMS) -- AMD-supplied software manages data programming, enabling EEPROM emulation -- Eases historical sector erase flash limitations s Erase Suspend/Erase Resume -- Suspends erase operations to allow programming in same bank s Data# Polling and Toggle Bits -- Provides a software method of detecting the status of program or erase cycles s Unlock Bypass Program command -- Reduces overall programming time when issuing multiple program command sequences HARDWARE FEATURES s Any combination of sectors can be erased s Ready/Busy# output (RY/BY#) -- Hardware method for detecting program or erase cycle completion s Hardware reset pin (RESET#) -- Hardware method of resetting the internal state machine to the read mode s WP#/ACC input pin -- Write protect (WP#) function allows protection of two outermost boot sectors, regardless of sector protect status -- Acceleration (ACC) function accelerates program timing -- ACC voltage is 8.5 V to 12.5 V s Sector protection -- Hardware method of locking a sector, either in-system or using programming equipment, to prevent any program or erase operation within that sector -- Temporary Sector Unprotect allows changing data in protected sectors in-system
This document contains information on a product under development at Advanced Micro Devices. The information is intended to help you evaluate this product. AMD reserves the right to change or discontinue work on this proposed product without notice.
Publication# 23569 Rev: A Amendment/+4 Issue Date: August 7, 2002
Refer to AMD's Website (www.amd.com) for the latest information.
ADVANCE
INFORMATION
GENERAL DESCRIPTION
The AM29PDS322D is a 32 Mbit, 1.8 V-only Flash memory organized as 2,097,152 words of 16 bits each. This device is offered in a 48-ball FBGA package. The device is designed to be programmed in system with standard system 1.8 V V CC supply. This device can also be reprogrammed in standard EPROM programmers. The AM29PDS322D offers fast page access time of 40 ns with random access time of 100 ns (at 1.8 V to 2.2 V VCC), allowing operation of high-speed microprocessors without wait states. To eliminate bus contention the device has separate chip enable (CE), write enable (WE), and output enable (OE) controls. The page size is 4 words. The device requires only a single 1.8 volt power supply for both read and write functions. Internally generated and regulated voltages are provided for the program and erase operations. other flash sector, or may permanently lock their own code there. DMS (Data Management Software) allows systems to easily take advantage of the advanced architecture of the simultaneous read/write product line by allowing removal of EEPROM devices. DMS will also allow the system software to be simplified, as it will perform all functions necessary to modify data in file structures, as opposed to single-byte modifications. To write or update a particular piece of data (a phone number or configuration data, for example), the user only needs to state which piece of data is to be updated, and where the updated data is located in the system. This i s an a d v a nt a g e c o m p a r e d to s y s t e m s w h e r e user-written software must keep track of the old data location, status, logical to physical translation of the data onto the Flash memory device (or memory devices), and more. Using DMS, user-written software does not need to interface with the Flash memory directly. Instead, the user's software accesses the Flash memory by calling one of only six functions. AMD provides this software to simplify system design and software integration efforts. The device offers complete compatibility with the JEDEC single-power-supply Flash command set standard. Commands are written to the command register using standard microprocessor write timings. Reading data out of the device is similar to reading from other Flash or EPROM devices. The host system can detect whether a program or erase operation is complete by using the device status bits: RY/BY# pin, DQ7 (Data# Polling) and DQ6/DQ2 (toggle bits). After a program or erase cycle has been completed, the device automatically returns to the read mode. The sector erase architecture allows memory sectors to be erased and reprogrammed without affecting the data contents of other sectors. The device is fully erased when shipped from the factory. Hardware data protection measures include a low V CC detector that automatically inhibits write operations during power transitions. The hardware sector protection feature disables both program and erase operations in any combination of the sectors of memory. This can be achieved in-system or via programming equipment. The device offers two power-saving features. When addresses have been stable for a specified amount of time, the device enters the automatic sleep mode. The system can also place the device into the standby mode. Power consumption is greatly reduced in both modes.
Simultaneous Read/Write Operations with Zero Latency
The Simultaneous Read/Write architecture provides simultaneous operation by dividing the memory space into two banks. The device can improve overall system performance by allowing a host system to program or erase in one bank, then immediately and simultaneously read from the other bank, with zero latency. This releases the system from waiting for the completion of program or erase operations. The device is divided as shown in the following table:
Bank 1 Sectors Quantity 8 7 Size 4 Kwords 56 32 Kwords 4 Mbits total 28 Mbits total 32 Kwords Bank 2 Sectors Quantity Size
AM29PDS322D Features
The SecSi (Secured Silicon) Sector is an extra 64 KByte sector capable of being permanently locked by AMD or customers. The SecSi Indicator Bit (DQ7) is permanently set to a 1 if the part is factory locked, and set to a 0 if customer lockable. This way, customer lockable parts can never be used to replace a factory locked part. Factory locked parts provide several options. The SecSi Sector may store a secure, random 16 byte ESN (Electronic Serial Number), customer code (programmed through AMD's ExpressFlash service), or both. Customer Lockable parts may utilize the SecSi Sector as bonus space, reading and writing like any
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INFORMATION
TABLE OF CONTENTS
Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 4 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Special Handling Instructions for FBGA Package .................... 5 Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 7 Device Bus Operations . . . . . . . . . . . . . . . . . . . . . 8
Table 1. AM29PDS322D Device Bus Operations .............................8
Sector Erase Command Sequence ........................................ 24 Erase Suspend/Erase Resume Commands ........................... 24
Figure 6. Erase Operation.............................................................. 25
AM29PDS322D Command Definitions . . . . . . . . 26 Write Operation Status . . . . . . . . . . . . . . . . . . . . . 27 DQ7: Data# Polling ................................................................. 27
Figure 7. Data# Polling Algorithm .................................................. 27
Requirements for Reading Array Data ..................................... 8 Read Mode ............................................................................... 8
Random Read (Non-Page Mode Read) ............................................8
RY/BY#: Ready/Busy#............................................................ 28 DQ6: Toggle Bit I .................................................................... 28
Figure 8. Toggle Bit Algorithm........................................................ 28
Page Mode Read ...................................................................... 9
Table 2. Page Word Mode ................................................................9
Writing Commands/Command Sequences .............................. 9
Accelerated Program Operation ........................................................9 Autoselect Functions .........................................................................9
DQ2: Toggle Bit II ................................................................... 29 Reading Toggle Bits DQ6/DQ2 ............................................... 29 DQ5: Exceeded Timing Limits ................................................ 29 DQ3: Sector Erase Timer ....................................................... 29
Table 11. Write Operation Status ................................................... 30
Absolute Maximum Ratings. . . . . . . . . . . . . . . . . 31
Figure 9. Maximum Negative Overshoot Waveform ...................... 31 Figure 10. Maximum Positive Overshoot Waveform...................... 31
Simultaneous Read/Write Operations with Zero Latency ......... 9 Standby Mode .......................................................................... 9 Automatic Sleep Mode ........................................................... 10 RESET#: Hardware Reset Pin ............................................... 10 Output Disable Mode .............................................................. 10
Table 3. AM29PDS322DT Top Boot Sector Addresses ..................11 Table 4. AM29PDS322DT Top Boot SecSi Sector Address ...........12 Table 5. AM29PDS322DB Bottom Boot Sector Addresses ............12 Table 6. AM29PDS322DB Bottom Boot SecSi Sector Address . . .14
Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . 31 DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 11. ICC1 Current vs. Time (Showing Active and Automatic Sleep Currents) .............................................................................. 33 Figure 12. Typical ICC1 vs. Frequency ............................................ 33
Test Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 13. Test Setup.................................................................... 34 Table 12. Test Specifications ......................................................... 34
Autoselect Mode..................................................................... 15
Table 7. Autoselect Codes (High Voltage Method) ........................15
Key to Switching Waveforms. . . . . . . . . . . . . . . . 34
Figure 14. Input Waveforms and Measurement Levels ................. 34
Sector/Sector Block Protection and Unprotection .................. 16
Table 8. Top Boot Sector/Sector Block Addresses for Protection/Unprotection ...................................................................16 Table 9. Bottom Boot Sector/Sector Block Addresses for Protection/Unprotection ...................................................................16
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 15. Conventional Read Operation Timings ......................... 35 Figure 16. Page Mode Read Timings ............................................ 36
Hardware Reset (RESET#) .................................................... 37
Figure 17. Reset Timings ............................................................... 37
Write Protect (WP#) ................................................................ 17 Temporary Sector/Sector Block Unprotect ............................. 17
Figure 1. Temporary Sector Unprotect Operation........................... 17 Figure 2. Temporary Sector Group Unprotect Operation................ 18 Figure 3. In-System Sector Group Protect/Unprotect Algorithms ... 19
Erase and Program Operations .............................................. 38
Figure 18. Program Operation Timings.......................................... Figure 19. Accelerated Program Timing Diagram.......................... Figure 20. Chip/Sector Erase Operation Timings .......................... Figure 21. Back-to-back Read/Write Cycle Timings ...................... Figure 22. Data# Polling Timings (During Embedded Algorithms). Figure 23. Toggle Bit Timings (During Embedded Algorithms)...... Figure 24. DQ2 vs. DQ6................................................................. 39 39 40 41 41 42 42
SecSi (Secured Silicon) Sector Flash Memory Region .......... 20
Factory Locked: SecSi Sector Programmed and Protected at the Factory ..................................................................................20
Hardware Data Protection ...................................................... 20
Low VCC Write Inhibit .......................................................................20 Write Pulse "Glitch" Protection ........................................................21 Logical Inhibit ..................................................................................21 Power-Up Write Inhibit ....................................................................21
Temporary Sector Unprotect .................................................. 43
Figure 25. Temporary Sector Group Unprotect Timing Diagram ... 43 Figure 26. Sector Group Protect and Unprotect Timing Diagram .. 44
Alternate CE# Controlled Erase and Program Operations ..... 45
Figure 27. Alternate CE# Controlled Write (Erase/Program) Operation Timings.......................................................................... 46
Command Definitions . . . . . . . . . . . . . . . . . . . . . 21 Reading Array Data ................................................................ 21 Reset Command ..................................................................... 21 Autoselect Command Sequence ............................................ 21 Enter SecSi Sector/Exit SecSi Sector Command Sequence .. 22 Word Program Command Sequence ..................................... 22
Unlock Bypass Command Sequence ..............................................22
Chip Erase Command Sequence ........................................... 22
Figure 4. Unlock Bypass Algorithm ................................................. 23 Figure 5. Program Operation .......................................................... 23
Erase And Programming Performance. . . . . . . . 47 Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 47 Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 48 FBD048--48-Ball Fine-Pitch Ball Grid Array (FBGA) 12 x 6 mm package ................................................................ 48 Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 49
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INFORMATION
PRODUCT SELECTOR GUIDE
Part Number Speed Options Standard Voltage Range: VCC = 1.8-2.2 V 10 100 40 100 35 AM29PDS322D 12 120 45 120 40
Max Random Address Access Time (ns) Max Page Address Access Time (ns) CE# Access Time (ns) OE# Access Time (ns) Note: See "AC Characteristics" for full specifications.
BLOCK DIAGRAM
VCC VSS OE#
Mux Y-Decoder A0-A20
Upper Bank Address
Upper Bank
Latches and Control Logic
RY/BY#
A0-A20 RESET# WE# CE# WP#/ACC DQ0-DQ15 A0-A20 STATE CONTROL & COMMAND REGISTER Status
X-Decoder
DQ0-DQ15
A0-A20
DQ0-DQ15 Control DQ0-DQ15 Mux
X-Decoder
Lower Bank
A0-A20 Mux
Lower Bank Address
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AM29PDS322D
Latches and Control Logic
Y-Decoder
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ADVANCE
INFORMATION
CONNECTION DIAGRAMS
48-Ball FBGA Top View, Balls Facing Down
A6 A13 A5 A9 A4 WE# A3
B6 A12 B5 A8 B4 RESET# B3
C6 A14 C5 A10 C4 NC C3 A18 C2 A6 C1 A2
D6 A15 D5 A11 D4 A19 D3 A20 D2 A5 D1 A1
E6 A16 E5 DQ7 E4 DQ5 E3 DQ2 E2 DQ0 E1 A0
F6 NC F5 DQ14 F4 DQ12 F3 DQ10 F2 DQ8 F1 CE#
G6 DQ15 G5 DQ13 G4 VCC G3 DQ11 G2 DQ9 G1 OE#
H6 VSS H5 DQ6 H4 DQ4 H3 DQ3 H2 DQ1 H1 VSS
RY/BY# WP#/ACC A2 A7 A1 A3 B2 A17 B1 A4
Special Handling Instructions for FBGA Package
Special handling is required for Flash Memory products in FBGA packages.
Flash memory devices in FBGA packages may be damaged if exposed to ultrasonic cleaning methods. The package and/or data integrity may be compromised if the package body is exposed to temperatures above 150C for prolonged periods of time.
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PIN DESCRIPTION
A0-A20 = 21 Addresses inputs DQ0-DQ15 = 16 Data inputs/outputs CE# OE# WE# WP#/ACC RESET# RY/BY# VCC = Chip Enable input = Output Enable input = Write Enable input
LOGIC SYMBOL
21 A0-A20 CE# OE# WE# DQ0-DQ15 16
= Hardware Write Protect/ Acceleration Input = Hardware Reset Pin input = Ready/Busy output = 1.8 volt-only single power supply (see Product Selector Guide for speed options and voltage supply tolerances) = Device Ground = Pin Not Connected Internally
WP#/ACC RESET# RY/BY#
VSS NC
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ADVANCE
INFORMATION
ORDERING INFORMATION Standard Products
AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed by a combination of the following: AM29PDS322D B 10 WM I N
OPTIONAL PROCESSING Blank = Standard Processing N = 16-byte ESN devices (Contact an AMD representative for more information) TEMPERATURE RANGE I = Industrial (-40C to +85C) PACKAGE TYPE WM = 48-Ball Fine-Pitch Ball Grid Array (FBGA) 0.80 mm pitch, 6 x 12 mm package (FBD048) SPEED OPTION See Product Selector Guide and Valid Combinations BOOT CODE SECTOR ARCHITECTURE T = Top sector B = Bottom sector DEVICE NUMBER/DESCRIPTION AM29PDS322D 32 Megabit (2 M x 16-Bit) CMOS Boot Sector Page Mode Flash Memory 1.8 Volt-only Read, Program, and Erase
Valid Combinations Valid Combinations for FBGA Package Order Number
AM29PDS322DT10, AM29PDS322DB10 AM29PDS322DT12, AM29PDS322DB12 WMI WMI
Package Marking
P322DT10U, P322DB10U P322DT12U, P322DB12U I I
Valid Combinations list configurations planned to be supported in volume for this device. Consult the local AMD sales office to confirm availability of specific valid combinations and to check on newly released combinations.
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INFORMATION
DEVICE BUS OPERATIONS
This section describes the requirements and use of the device bus operations, which are initiated through the internal command register. The command register itself does not occupy any addressable memory location. The register is a latch used to store the commands, along with the address and data information needed to execute the command. The contents of the Table 1.
Operation Read Write Standby Output Disable Reset Sector Protect (Note 1) Sector Unprotect (Note 1) Temporary Sector Unprotect CE# L L VCC 0.3 V L X L L X
register serve as inputs to the internal state machine. The state machine outputs dictate the function of the device. Table 1 lists the device bus operations, the inputs and control levels they require, and the resulting output. The following subsections describe each of these operations in further detail.
AM29PDS322D Device Bus Operations
OE# L H X H X H H X WE# H L X H X L L X RESET# H H VCC 0.3 V H L VID VID VID WP#/ACC L/H (Note 2) H L/H L/H L/H (Note 2) (Note 2) Addresses (Note 1) AIN AIN X X X SA, A6 = L, A1 = H, A0 = L SA, A6 = H, A1 = H, A0 = L AIN DQ0-DQ15 DOUT DIN High-Z High-Z High-Z DIN DIN DIN
Legend: L = Logic Low = VIL, H = Logic High = VIH, VID = 9.0-11.0 V, VHH = 9.0 0.5 V, X = Don't Care, SA = Sector Address, AIN = Address In, DIN = Data In, DOUT = Data Out Notes: 1. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the "Sector/Sector Block Protection and Unprotection" section. 2. If WP#/ACC = VIL, the two outermost boot sectors remain protected. If WP#/ACC = VIH, the two outermost boot sector protection depends on whether they were last protected or unprotected using the method described in "Sector/Sector Block Protection and Unprotection". If WP#/ACC = VHH, all sectors will be unprotected.
Requirements for Reading Array Data
To read array data from the outputs, the system must drive the CE# and OE# pins to VIL. CE# is the power control and selects the device. OE# is the output control and gates array data to the output pins. WE# should remain at VIH. The internal state machine is set for reading array data upon device power-up, or after a hardware reset. This ensures that no spurious alteration of the memory content occurs during the power transition. No command is necessary in this mode to obtain array data. Standard microprocessor read cycles that assert valid addresses on the device address inputs produce valid data on the device data outputs. The device remains enabled for read access until the command register contents are altered. See "Requirements for Reading Array Data" for more information. Refer to the AC Read-Only Operations table for timing specifications and to Figure 15 for the 8
timing diagram. ICC1 in the DC Characteristics table represents the active current specification for reading array data.
Read Mode
Random Read (Non-Page Mode Read) The device has two control functions which must be satisfied in order to obtain data at the outputs. CE# is the power control and should be used for device selection. OE# is the output control and should be used to gate data to the output pins if the device is selected. Address access time (tACC) is equal to the delay from stable addresses to valid output data. The chip enable access time (t CE ) is the delay from the stable addresses and stable CE# to valid data at the output pins. The output enable access time is the delay from the falling edge of OE# to valid data at the output pins (assuming the addresses have been stable for at least tACC-tOE time). August 7, 2002
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INFORMATION Accelerated Program Operation The device offers accelerated program operations through the ACC function. This is one of two functions provided by the WP#/ACC pin. This function is primarily intended to allow faster manufacturing throughput at the factory. If the system asserts VHH on this pin, the device automatically enters the aforementioned Unlock Bypass mode, temporarily unprotects any protected sectors, and uses the higher voltage on the pin to reduce the time required for program operations. The system would use a two-cycle program command sequence as required by the Unlock Bypass mode. Removing VHH from the ACC pin returns the device to normal operation. Autoselect Functions If the system writes the autoselect command sequence, the device enters the autoselect mode. The system can then read autoselect codes from the internal register (which is separate from the memory array) on DQ7-DQ0. Standard read cycle timings apply in this mode. Refer to the Autoselect Mode and Autoselect Command Sequence sections for more information.
Page Mode Read
The device is capable of fast Page mode read and is compatible with the Page mode Mask ROM read operation. This mode provides faster read access speed for random locations within a page. The Page size of the device is 4 words. The appropriate Page is selected by the higher address bits A20-A2 and the LSB bits A1-A0 determine the specific word within that page. This is an asynchronous operation with the microprocessor supplying the specific word location. The random or initial page access is equal to tACC or tCE and subsequent Page read accesses (as long as the locations specified by the microprocessor falls within that Page) are equivalent to tPACC. When CE# is deasserted and reasserted for a subsequent access, the access time is tACC or tCE. Here again, CE# selects the device and OE# is the output control and should be used to gate data to the output pins if the device is selected. Fast Page mode accesses are obtained by keeping A2-A20 constant and changing A0 to A1 to select the specific word within that page. See Figure 16 for timing specifications. The following table determines the specific word within the selected page: Table 2.
Word Word 0 Word 1 Word 2 Word 3
Page Word Mode
A1 0 0 1 1 A0 0 1 0 1
Simultaneous Read/Write Operations with Zero Latency
This device is capable of reading data from one bank of memory while programming or erasing in the other bank of memory. An erase operation may also be suspended to read from or program to another location within the same bank (except the sector being erased). Figure 21 shows how read and write cycles may be initiated for simultaneous operation with zero latency. ICC6 and ICC7 in the DC Characteristics table represent the current specifications for read-while-program and read-while-erase, respectively.
Writing Commands/Command Sequences
To write a command or command sequence (which includes programming data to the device and erasing sectors of memory), the system must drive WE# and CE# to VIL, and OE# to VIH. The device features an Unlock Bypass mode to facilitate faster programming. Once the device enters the Unlock Bypass mode, only two write cycles are required to program a word, instead of four. The "Word Program Command Sequence" section has details on programming data to the device using both standard and Unlock Bypass command sequences. An erase operation can erase one sector, multiple sectors, or the entire device. Table 2 indicates the address space that each sector occupies. ICC2 in the DC Characteristics table represents the active current specification for the write mode. The AC Characteristics section contains timing specification tables and timing diagrams for write operations.
Standby Mode
When the system is not reading or writing to the device, it can place the device in the standby mode. In this mode, current consumption is greatly reduced, and the outputs are placed in the high impedance state, independent of the OE# input. The device enters the CMOS standby mode when the CE# and RESET# pins are both held at VCC 0.3 V. (Note that this is a more restricted voltage range than VIH.) If CE# and RESET# are held at VIH, but not within VCC 0.3 V, the device will be in the standby mode, but the standby current will be greater. The device requires standard access time (t CE ) for read access when the device is in either of these standby modes, before it is ready to read data.
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INFORMATION chine to reading array data. The operation that was interrupted should be reinitiated once the device is ready to accept another command sequence, to ensure data integrity. Current is reduced for the duration of the RESET# pulse. When RESET# is held at VSS 0.3 V, the device draws CMOS standby current (ICC3). If RESET# is held at VIL but not within VSS 0.3 V, the standby current will be greater. The RESET# pin may be tied to the system reset circuitry. A system reset would thus also reset the Flash memory, enabling the system to read the boot-up firmware from the Flash memory. If RESET# is asserted during a program or erase operation, the RY/BY# pin remains a "0" (busy) until the internal reset operation is complete, which requires a time of t READY (during Embedded Algorithms). The system can thus monitor RY/BY# to determine whether the reset operation is complete. If RESET# is asserted when a program or erase operation is not executing (RY/BY# pin is "1"), the reset operation is completed within a time of tREADY (not during Embedded Algorithms). The system can read data tRH after the RESET# pin returns to VIH. Refer to the AC Characteristics tables for RESET# parameters and to Figure 17 for the timing diagram.
If the device is deselected during erasure or programming, the device draws active current until the operation is completed. I CC3 in the DC Characteristics table represents the standby current specification.
Automatic Sleep Mode
The automatic sleep mode minimizes Flash device energy consumption. The device automatically enables this mode when addresses remain stable for tACC + 30 ns. The automatic sleep mode is independent of the CE#, WE#, and OE# control signals. Standard address access timings provide new data when addresses are changed. While in sleep mode, output data is latched and always available to the system. Automatic sleep mode current is drawn when CE# = VSS 0.3 V and all inputs are held at VCC 0.3 V. If CE# and RESET# voltages are not held within these tolerances, the automatic sleep mode current will be greater. I CC5 in the DC Characteristics table represents the automatic sleep mode current specification.
RESET#: Hardware Reset Pin
The RESET# pin provides a hardware method of resetting the device to reading array data. When the RESET# pin is driven low for at least a period of tRP, the device immediately terminates any operation in progress, tristates all output pins, and ignores all read/write commands for the duration of the RESET# pulse. The device also resets the internal state ma-
Output Disable Mode
When the OE# input is at VIH, output from the device is disabled. The output pins are placed in the high impedance state.
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Bank Sector SA0 SA1 SA2 SA3 SA4 SA5 SA6 SA7 SA8 SA9 SA10 SA11 SA12 SA13 SA14 SA15 SA16 SA17 SA18 SA19 SA20 SA21 SA22 SA23 SA24 SA25 SA26 SA27 SA28 SA29 SA30 SA31 SA32 SA33 SA34 SA35 SA36 SA37 SA38 SA39 SA40 SA41 SA42 SA43
INFORMATION
AM29PDS322DT Top Boot Sector Addresses
Sector Size (Kwords) 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 (x16) Address Range 000000h-07FFFh 008000h-0FFFFh 010000h-17FFFh 018000h-01FFFFh 020000h-027FFFh 028000h-02FFFFh 030000h-037FFFh 038000h-03FFFFh 040000h-047FFFh 048000h-04FFFFh 050000h-057FFFh 058000h-05FFFFh 060000h-067FFFh 068000h-06FFFFh 070000h-077FFFh 078000h-07FFFFh 080000h-087FFFh 088000h-08FFFFh 090000h-097FFFh 098000h-09FFFFh 0A0000h-0A7FFFh 0A8000h-0AFFFFh 0B0000h-0B7FFFh 0B8000h-0BFFFFh 0C0000h-0C7FFFh 0C8000h-0CFFFFh 0D0000h-0D7FFFh 0D8000h-0DFFFFh 0E0000h-0E7FFFh 0E8000h-0EFFFFh 0F0000h-0F7FFFh 0F8000h-0FFFFFh 100000h-107FFFh 108000h-10FFFFh 110000h-117FFFh 118000h-11FFFFh 120000h-127FFFh 128000h-12FFFFh 130000h-137FFFh 138000h-13FFFFh 140000h-147FFFh 148000h-14FFFFh 150000h-157FFFh 158000h-15FFFFh
Sector Address A20-A12 000000xxx 000001xxx 000010xxx 000011xxx 000100xxx 000101xxx 000110xxx 000111xxx 001000xxx 001001xxx 001010xxx 001011xxx 001100xxx 001101xxx 001110xxx 001111xxx 010000xxx 010001xxx 010010xxx 010011xxx 010100xxx 010101xxx 010110xxx 010111xxx 011000xxx 011001xxx 011010xxx 011011xxx 011100xxx 011101xxx 011110xxx 011111xxx 100000xxx 100001xxx 100010xxx 100011xxx 100100xxx 100101xxx 100110xxx 100111xxx 101000xxx 101001xxx 101010xxx 101011xxx
August 7, 2002
Bank 2
AM29PDS322D
11
ADVANCE Table 3.
Bank Sector SA44 SA45 SA46 SA47 SA48 SA49 SA50 SA51 SA52 SA53 SA54 SA55 SA56 SA57 SA58 SA59 SA60 SA61 SA62 SA63 SA64 SA65 SA66 SA67 SA68 SA69 SA70
INFORMATION
AM29PDS322DT Top Boot Sector Addresses (Continued)
Sector Address A20-A12 101100xxx 101101xxx 101110xxx 101111xxx 110000xxx 110001xxx 110010xxx 110011xxx 110100xxx 110101xxx 110110xxx 110111xxx 111000xxx 111001xxx 111010xxx 111011xxx 111100xxx 111101xxx 111110xxx 111111000 111111001 111111010 111111011 111111100 111111101 111111110 111111111 Sector Size (Kwords) 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 4 4 4 4 4 4 4 4 (x16) Address Range 160000h-167FFFh 168000h-16FFFFh 170000h-177FFFh 178000h-17FFFFh 180000h-187FFFh 188000h-18FFFFh 190000h-197FFFh 198000h-19FFFFh 1A0000h-1A7FFFh 1A8000h-1AFFFFh 1B0000h-1B7FFFh 1B8000h-1BFFFFh 1C0000h-1C7FFFh 1C8000h-1CFFFFh 1D0000h-1D7FFFh 1D8000h-1DFFFFh 1E0000h-1E7FFFh 1E8000h-1EFFFFh 1F0000h-1F7FFFh 1F8000h-1F8FFFh 1F9000h-1F9FFFh 1FA000h-1FAFFFh 1FB000h-1FBFFFh 1FC000h-1FCFFFh 1FD000h-1FDFFFh 1FE000h-1FEFFFh 1FF000h-1FFFFFh
Bank 1
Bank 2
Table 4.
AM29PDS322DT Top Boot SecSi Sector Address
Sector Size 32 (x16) Address Range 1F8000h-1FFFFh
Sector Address A20-A12 111111xxx
Table 5.
Bank Sector SA0 SA1 SA2 SA3 SA4 SA5 SA6 SA7 SA8 SA9 SA10 SA11 SA12 SA13 SA14
AM29PDS322DB Bottom Boot Sector Addresses
Sector Size (Kwords) 4 4 4 4 4 4 4 4 32 32 32 32 32 32 32 (x16) Address Range 000000h-000FFFh 001000h-001FFFh 002000h-002FFFh 003000h-003FFFh 004000h-004FFFh 005000h-005FFFh 006000h-006FFFh 007000h-007FFFh 008000h-00FFFFh 010000h-017FFFh 018000h-01FFFFh 020000h-027FFFh 028000h-02FFFFh 030000h-037FFFh 038000h-03FFFFh
Sector Address A20-A12 000000000 000000001 000000010 000000011 000000100 000000101 000000110 000000111 000001xxx 000010xxx 000011xxx 000100xxx 000101xxx 000110xxx 000111xxx
12
Bank 1
AM29PDS322D
August 7, 2002
ADVANCE Table 5.
Bank Sector SA15 SA16 SA17 SA18 SA19 SA20 SA21 SA22 SA23 SA24 SA25 SA26 SA27 SA28 SA29 SA30 SA31 SA32 SA33 SA34 SA35 SA36 SA37 SA38 SA39 SA40 SA41 SA42 SA43 SA44 SA45 SA46 SA47 SA48 SA49 SA50 SA51 SA52 SA53 SA54 SA55 SA56 SA57 SA58 SA59 SA60 SA61 SA62
INFORMATION
AM29PDS322DB Bottom Boot Sector Addresses (Continued)
Sector Address A20-A12 001000xxx 001001xxx 001010xxx 001011xxx 001100xxx 001101xxx 001110xxx 001111xxx 010000xxx 010001xxx 010010xxx 010011xxx 010100xxx 010101xxx 010110xxx 010111xxx 011000xxx 011001xxx 011010xxx 011011xxx 011100xxx 011101xxx 011110xxx 011111xxx 100000xxx 100001xxx 100010xxx 100011xxx 100100xxx 100101xxx 100110xxx 100111xxx 101000xxx 101001xxx 101010xxx 101011xxx 101100xxx 101101xxx 101110xxx 101111xxx 111000xxx 110001xxx 110010xxx 110011xxx 110100xxx 110101xxx 110110xxx 110111xxx Sector Size (Kwords) 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 (x16) Address Range 040000h-047FFFh 048000h-04FFFFh 050000h-057FFFh 058000h-05FFFFh 060000h-067FFFh 068000h-06FFFFh 070000h-077FFFh 078000h-07FFFFh 080000h-087FFFh 088000h-08FFFFh 090000h-097FFFh 098000h-09FFFFh 0A0000h-0A7FFFh 0A8000h-0AFFFFh 0B0000h-0B7FFFh 0B8000h-0BFFFFh 0C0000h-0C7FFFh 0C8000h-0CFFFFh 0D0000h-0D7FFFh 0D8000h-0DFFFFh 0E0000h-0E7FFFh 0E8000h-0EFFFFh 0F0000h-0F7FFFh 0F8000h-0FFFFFh 100000h-107FFFh 108000h-10FFFFh 110000h-117FFFh 118000h-11FFFFh 120000h-127FFFh 128000h-12FFFFh 130000h-137FFFh 138000h-13FFFFh 140000h-147FFFh 148000h-14FFFFh 150000h-157FFFh 158000h-15FFFFh 160000h-167FFFh 168000h-16FFFFh 170000h-177FFFh 178000h-17FFFFh 180000h-187FFFh 188000h-18FFFFh 190000h-197FFFh 198000h-19FFFFh 1A0000h-1A7FFFh 1A8000h-1AFFFFh 1B0000h-1B7FFFh 1B8000h-1BFFFFh
August 7, 2002
Bank 2
AM29PDS322D
13
ADVANCE Table 5.
Bank Sector SA63 SA64 SA65 SA66 SA67 SA68 SA69 SA70
INFORMATION
AM29PDS322DB Bottom Boot Sector Addresses (Continued)
Sector Address A20-A12 111000xxx 111001xxx 111010xxx 111011xxx 111100xxx 111101xxx 111110xxx 111111xxx Sector Size (Kwords) 32 32 32 32 32 32 32 32 (x16) Address Range 1C0000h-1C7FFFh 1C8000h-1CFFFFh 1D0000h-1D7FFFh 1D8000h-1DFFFFh 1E0000h-1E7FFFh 1E8000h-1EFFFFh 1F0000h-1F7FFFh 1F8000h-1FFFFFh
Bank 2
Table 6.
AM29PDS322DB Bottom Boot SecSi Sector Address
Sector Size 32 (x16) Address Range 00000h-07FFFh
Sector Address A20-A12 000000xxx
.
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ADVANCE
INFORMATION Table 7. In addition, when verifying sector protection, the sector address must appear on the appropriate highest order address bits (see Tables 3 through 6). Table 7 shows the remaining address bits that are don't care. When all necessary bits have been set as required, the programming equipment may then read the corresponding identifier code on DQ15-DQ0. To access the autoselect codes in-system, the host system can issue the autoselect command via the command register, as shown in Table 10. This method does not require V ID . Refer to the Autoselect Command Sequence section for more information.
Autoselect Mode
The autoselect mode provides manufacturer and device identification, and sector protection verification, through identifier codes output on DQ15-DQ0. This mode is primarily intended for programming equipment to automatically match a device to be programmed with its corresponding programm ing algorithm. However, the autoselect codes can also be accessed in-system through the command register. When using programming equipment, the autoselect mode requires VID (8.5 V to 12.5 V) on address pin A9. Address pins A6, A1, and A0 must be as shown in
Table 7.
Autoselect Codes (High Voltage Method)
A20 to A12 X X X X SA A11 to A10 X X X X X A8 to A7 X X X X X A5 to A4 X X X X X
Description Manufacturer ID: AMD Device ID Word 1 Device ID Word 2 Device ID Word 3: Top or Bottom Boot Sector Protection Verification SecSi Indicator Bit (DQ7), WP# protects highest address sector
CE# OE# WE# L L L L L L L L L L H H H H H
A9 VID VID VID VID VID
A6 L L L L L
A3 X L H H X
A2 X L H H X
A1 L L H H H
A0 L H L H L
DQ15 to DQ0 0001h 227Eh 2206h 2201h (Top Boot), 2200h (Bottom Boot) XX01h (protected), XX00h (unprotected)
L
L
H
X
X
VID
X
L
X
X
X
H
H
80h (factory locked), 00h (not factory locked)
Legend: L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don't care.
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ADVANCE
INFORMATION Table 9. Bottom Boot Sector/Sector Block Addresses for Protection/Unprotection
Sector Group SGA0 SGA1 SGA2 SGA3 SGA4 SGA5 SGA6 SGA7 SGA8 SGA9 SGA10 SGA11 SGA12 SGA13 SGA14 SGA15 SGA16 SGA17 SGA18 SGA19 SGA20 SGA21 SGA22 SGA23 SGA24 Sectors SA70 SA69-SA67 SA66-SA63 SA62-SA59 SA58-SA55 SA54-SA51 SA50-SA47 SA46-SA43 SA42-SA39 SA38-SA35 SA34-SA31 SA30-SA27 SA26-SA23 SA22-SA19 SA18-SA15 SA14-SA11 SA10-SA8 SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0 A20-A12 111111XXX 11110XXXX 1110XXXXX 1101XXXXX 1100XXXXX 1011XXXXX 1010XXXXX 1001XXXXX 1000XXXXX 0111XXXXX 0110XXXXX 0101XXXXX 0100XXXXX 0011XXXXX 0010XXXXX 0001XXXXX 000011XXX 000000111 000000110 000000101 000000100 000000011 000000010 000000001 000000000 Sector/Sector Block Size 64 (1x64) Kbytes 192 (3x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 192 (3x64) Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes
Sector/Sector Block Protection and Unprotection
(Note: For the following discussion, the term "sector" applies to both sectors and sector blocks. A sector block consists of two or more adjacent sectors that are protected or unprotected at the same time (see Tables 8 and 9). Table 8.
Sector Group SGA0 SGA1 SGA2 SGA3 SGA4 SGA5 SGA6 SGA7 SGA8 SGA9 SGA10 SGA11 SGA12 SGA13 SGA14 SGA15 SGA16 SGA17 SGA18 SGA19 SGA20 SGA21 SGA22 SGA23 SGA24
Top Boot Sector/Sector Block Addresses for Protection/Unprotection
Sectors SA0 SA1-SA3 SA4-SA7 SA8-SA11 SA12-SA15 SA16-SA19 SA20-SA23 SA24-SA27 SA28-SA31 SA32-SA35 SA36-SA39 SA40-SA43 SA44-SA47 SA48-SA51 SA52-SA55 SA56-SA59 SA60-SA62 SA63 SA64 SA65 SA66 SA67 SA68 SA69 SA70 A20-A12 000000XXX 00001XXXX 0001XXXXX 0010XXXXX 0011XXXXX 0100XXXXX 0101XXXXX 0110XXXXX 0111XXXXX 1000XXXXX 1001XXXXX 1010XXXXX 1011XXXXX 1100XXXXX 1101XXXXX 1110XXXXX 111100XXX 111111000 111111001 111111010 111111011 111111100 111111101 111111110 111111111 Sector/ Sector Block Size 64 (1x64) Kbytes 192 (3x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 256 (4x64) Kbytes 192 (3x64) Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes 8 Kbytes
The hardware sector protection feature disables both program and erase operations in any sector. The hardware sector unprotection feature re-enables both program and erase operations in previously protected sectors. Sector protection and unprotection can be implemented via two methods. The primary method requires VID on the RESET# pin only, and can be implemented either in-system or via programming equipment. Figure 3 shows the algorithms and Figure 26 shows the timing diagram. This method uses standard microprocessor bus cycle timing. For sector unprotect, all unprotected sectors must first be protected prior to the first sector unprotect write cycle.
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ADVANCE
INFORMATION block consists of two or more adjacent sectors that are protected or unprotected at the same time (see Tables 8 and 9). This feature allows temporary unprotection of previously protected sectors to change data in-system. The Sector Unprotect mode is activated by setting the RESET# pin to V ID (9.0 V - 11.0 V). During this mode, formerly protected sectors can be programmed or erased by selecting the sector addresses. Once VID is removed from the RESET# pin, all the previously protected sectors are protected again. Figure 1 shows the algorithm, and Figure 25 shows the timing diagrams, for this feature.
The alternate method intended only for programming equipment requires VID on address pin A9 and OE#. This method is compatible with programmer routines written for earlier AMD flash devices. Contact an AMD representative for further details. The device is shipped with all sectors unprotected. AMD offers the option of programming and protecting sectors at its factory prior to shipping the device through AMD's ExpressFlashTM Service. Contact an AMD representative for details. It is possible to determine whether a sector is protected or unprotected. See the Autoselect Mode section for details.
Write Protect (WP#)
The Write Protect function provides a hardware method of protecting certain boot sectors without using VID. This function is one of two provided by the WP#/ACC pin. If the system asserts VIL on the WP#/ACC pin, the device disables program and erase functions in the two "outermost" 8 Kbyte boot sectors independently of whether those sectors were protected or unprotected using the method described in "Sector/Sector Block Protection and Unprotection". The two outermost 8 Kbyte boot sectors are the two sectors containing the lowest addresses in a bottom-boot-configured device, or the two sectors containing the highest addresses in a top-boot-configured device. If the system asserts VIH on the WP#/ACC pin, the device reverts to whether the two outermost 8 Kbyte boot sectors were last set to be protected or unprotected. That is, sector protection or unprotection for these two sectors depends on whether they were last protected or unprotected using the method described in "Sector/Sector Block Protection and Unprotection". Note that the WP#/ACC pin must not be left floating or unconnected; inconsistent behavior of the device may result.
START
RESET# = VID (Note 1) Perform Erase or Program Operations
RESET# = VIH
Temporary Sector Unprotect Completed (Note 2)
Notes: 1. All protected sectors unprotected (If WP#/ACC = VIL, outermost boot sectors will remain protected). 2. All previously protected sectors are protected once again.
Temporary Sector/Sector Block Unprotect
(Note: For the following discussion, the term "sector" applies to both sectors and sector blocks. A sector
Figure 1.
Temporary Sector Unprotect Operation
August 7, 2002
AM29PDS322D
17
ADVANCE
INFORMATION
START
RESET# = VID (Note 1) Perform Erase or Program Operations
RESET# = VIH
Temporary Sector Group Unprotect Completed (Note 2)
Notes: 1. All protected sector groups unprotected (If WP# = VIL, the first or last sector will remain protected). 2. All previously protected sector groups are protected once again.
Figure 2.
Temporary Sector Group Unprotect Operation
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INFORMATION
START PLSCNT = 1 RESET# = VID Wait 1 s Protect all sectors: The indicated portion of the sector protect algorithm must be performed for all unprotected sectors prior to issuing the first sector unprotect address
START PLSCNT = 1 RESET# = VID Wait 1 s
Temporary Sector Unprotect Mode
No
First Write Cycle = 60h? Yes Set up sector address Sector Protect: Write 60h to sector address with A6 = 0, A1 = 1, A0 = 0 Wait 150 s Verify Sector Protect: Write 40h to sector address with A6 = 0, A1 = 1, A0 = 0 Read from sector address with A6 = 0, A1 = 1, A0 = 0 No
No First Write Cycle = 60h? Yes All sectors protected? Yes Set up first sector address Sector Unprotect: Write 60h to sector address with A6 = 1, A1 = 1, A0 = 0
Temporary Sector Unprotect Mode
Increment PLSCNT
Reset PLSCNT = 1
Wait 15 ms Verify Sector Unprotect: Write 40h to sector address with A6 = 1, A1 = 1, A0 = 0
No No PLSCNT = 25? Yes Data = 01h?
Increment PLSCNT
Yes
No Yes No
Read from sector address with A6 = 1, A1 = 1, A0 = 0 Set up next sector address
Device failed
Protect another sector? No Remove VID from RESET#
PLSCNT = 1000? Yes
Data = 00h? Yes
Device failed Write reset command
Last sector verified? Yes
No
Sector Protect Algorithm
Sector Protect complete
Sector Unprotect Algorithm
Remove VID from RESET#
Write reset command Sector Unprotect complete
Figure 3.
In-System Sector Group Protect/Unprotect Algorithms
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ADVANCE
INFORMATION Customers may opt to have their code programmed by AMD through the AMD ExpressFlash service. AMD programs the customer's code, with or without the random ESN. The devices are then shipped from AMD's factory with the permanently locked. Contact an AMD representative for details on using AMD's ExpressFlash service. Customer Lockable: SecSi Sector NOT Programmed or Protected at the Factory If the security feature is not required, the SecSi Sector can be treated as an additional Flash memory space, expanding the size of the available Flash array by 64 Kbytes. The SecSi Sector can be read, programmed, and erased as often as required. The SecSi Sector area can be protected using one of the following procedures: s Write the three-cycle Enter SecSi Sector Region command sequence, and then follow the in-system sector protect algorithm as shown in Figure 3, except that RESET# may be at either VIH or VID. This allows in-system protection of the SecSi Sector without raising any device pin to a high voltage. Note that this method is only applicable to the SecSi Sector. s Write the three-cycle Enter SecSi Sector Region command sequence, and then use the alternate method of sector protection described in the "Sector/Sector Block Protection and Unprotection" section. Once the SecSi Sector is locked and verified, the syste m m u s t w ri te th e Ex i t S ec S i S ec to r R e gi on command sequence to return to reading and writing the remainder of the array. The SecSi Sector protection must be used with caution since, once protected, there is no procedure available for unprotecting the SecSi Sector area and none of the bits in the SecSi Sector memory space can be modified in any way.
SecSi (Secured Silicon) Sector Flash Memory Region
The SecSi (Secured Silicon) Sector feature provides a Flash memory region that enables permanent part identification through an Electronic Serial Number (ESN). The SecSi Sector is 64 KBytes in length, and uses a SecSi Sector Indicator Bit (DQ7) to indicate whether or not the SecSi Sector is locked when shipped from the factory. This bit is permanently set at the factory and cannot be changed, which prevents cloning of a factory locked part. This ensures the security of the ESN once the product is shipped to the field. AMD offers the device with the SecSi Sector either factor y locked o r custom er locka ble . Th e factory-locked version is always protected when shipped from the factory, and has the SecSi (Secured Silicon) Sector Indicator Bit permanently set to a "1." The customer-lockable version is shipped with the SecSi Sector unprotected, allowing customers to utilize that sector in any manner they choose. The customer-lockable version also has the SecSi Sector Indicator Bit permanently set to a "0." Thus, the SecSi Sector Indicator Bit prevents customer-lockable devices from being used to replace devices that are factory locked. The system accesses the SecSi Sector through a command sequence (see "Enter SecSi Sector/Exit SecSi Sector Command Sequence"). After the system has written the Enter SecSi Sector command sequence, it may read the SecSi Sector by using the addresses normally occupied by the first sector (SA0). This mode of operation continues until the system issues the Exit SecSi Sector command sequence, or until power is removed from the device. On power-up, or following a hardware reset, the device reverts to sending commands to the boot sectors instead of the SecSi sector Factory Locked: SecSi Sector Programmed and Protected at the Factory In a factory locked device, the SecSi Sector is protected when the device is shipped from the factory. The SecSi Sector cannot be modified in any way. The device is available preprogrammed with one of the following: s A random, secure ESN only s Customer code through the ExpressFlash service s Both a random, secure ESN and customer code through the ExpressFlash service. In devices that have an ESN, a Bottom Boot device will have the 16-byte ESN in the lowest addressable memory area at addresses 000000h-000007h. In the Top Boot device the starting address of the ESN will be at the bottom of the lowest 8 Kbyte boot sector at addresses 1F8000h-1F8007h.
Hardware Data Protection
The command sequence requirement of unlock cycles for programming or erasing provides data protection against inadvertent writes (refer to Table 10 for command definitions). In addition, the following hardware data protection measures prevent accidental erasure or programming, which might otherwise be caused by spurious system level signals during V CC power-up and power-down transitions, or from system noise. Low VCC Write Inhibit When VCC is less than V LKO, the device does not accept any write cycles. This protects data during VCC power-up and power-down. The command register and all internal program/erase circuits are disabled, and the device resets to the read mode. Subsequent
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August 7, 2002
ADVANCE
INFORMATION Logical Inhibit Write cycles are inhibited by holding any one of OE# = VIL, CE# = VIH or WE# = V IH. To initiate a write cycle, CE# and WE# must be a logical zero while OE# is a logical one. Power-Up Write Inhibit If WE# = CE# = VIL and OE# = VIH during power up, the device does not accept commands on the rising edge of WE#. The internal state machine is automatically reset to the read mode on power-up.
writes are ignored until VCC is greater than VLKO. The system must provide the proper signals to the control pins to prevent unintentional writes when V CC is greater than VLKO. Write Pulse "Glitch" Protection Noise pulses of less than 5 ns (typical) on OE#, CE# or WE# do not initiate a write cycle.
COMMAND DEFINITIONS
Writing specific address and data commands or sequences into the command register initiates device operations. Table 10 defines the valid register command sequences. Writing incorrect address and data values or writing them in the improper sequence resets the device to reading array data. All addresses are latched on the falling edge of WE# or CE#, whichever happens later. All data is latched on the rising edge of WE# or CE#, whichever happens first. Refer to the AC Characteristics section for timing diagrams. The reset command may be written between the sequence cycles in an erase command sequence before erasing begins. This resets the device to the read mode. Once erasure begins, however, the device ignores reset commands until the operation is complete. The reset command may be written between the sequence cycles in a program command sequence before programming begins. This resets the device to the read mode. If the program command sequence is written while the device is in the Erase Suspend mode, writing the reset command returns the device to the erase-suspend-read mode. Once programming begins, however, the device ignores reset commands until the operation is complete. The reset command may be written between the sequence cycles in an autoselect command sequence. Once in the autoselect mode, the reset command must be written to return to the read mode. If the device entered the autoselect mode while in the Erase Suspend mode, writing the reset command returns the device to the erase-suspend-read mode. If DQ5 goes high during a program or erase operation, writing the reset command returns the device to the read mode (or erase-suspend-read mode if the device was in Erase Suspend).
Reading Array Data
The device is automatically set to reading array data after device power-up. No commands are required to retrieve data. The device is ready to read array data after completing an Embedded Program or Embedded Erase algorithm. After the device accepts an Erase Suspend command, the device enters the erase-suspend-read mode, after which the system can read data from any non-erase-suspended sector. After completing a programming operation in the Erase Suspend mode, the system may once again read array data with the same exception. See the Erase Suspend/Erase Resume Commands section for more information. The system must issue the reset command to return the device to the read (or erase-suspend-read) mode if DQ5 goes high during an active program or erase operation, or if the device is in the autoselect mode. See the next section, Reset Command, for more information. See also Requirements for Reading Array Data in the Device Bus Operations section for more information. The Read-Only Operations table provides the read parameters, and Figure 15 shows the timing diagram.
Autoselect Command Sequence
The autoselect command sequence allows the host system to access the manufacturer and device codes, and determine whether or not a sector is protected. Table 10 shows the address and data requirements. This method is an alternative to that shown in Table 7, which is intended for PROM programmers and requires V ID on address pin A9. The autoselect command sequence may be written to an address that is either in the read or erase-suspend-read mode. The autoselect command may not be written while the device is actively programming or erasing. The autoselect command sequence is initiated by writing two unlock cycles, followed by the autoselect command. The device then enters the autoselect mode,
Reset Command
Writing the reset command resets the device to the read or erase-suspend-read mode. Address bits are don't cares for this command.
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ADVANCE
INFORMATION from "0" back to a "1." Attempting to do so may cause the device to set DQ5 = 1, or cause the DQ7 and DQ6 status bits to indicate the operation was successful. However, a succeeding read will show that the data is still "0." Only erase operations can convert a "0" to a "1." Unlock Bypass Command Sequence The unlock bypass feature allows the system to program words to the device faster than using the standard program command sequence. The unlock bypass command sequence is initiated by first writing two unlock cycles. This is followed by a third write cycle containing the unlock bypass command, 20h. The device then enters the unlock bypass mode. A two-cycle unlock bypass program command sequence is all that is required to program in this mode. The first cycle in this sequence contains the unlock bypass program command, A0h; the second cycle contains the program address and data. Additional data is programmed in the same manner. This mode dispenses with the initial two unlock cycles required in the standard program command sequence, resulting in faster total programming time. Table 10 shows the requirements for the command sequence. During the unlock bypass mode, only the Unlock Bypass Program and Unlock Bypass Reset commands are valid. To exit the unlock bypass mode, the system must issue the two-cycle unlock bypass reset command sequence. The first cycle must contain the data 90h. The second cycle must contain the data 00h. The device then returns to reading array data. See Figure 4 for the unlock bypass algorithm. The device offers accelerated program operations through the WP#/ACC pin. When the system asserts VHH on the WP#/ACC pin, the device automatically enters the Unlock Bypass mode. The system may then write the two-cycle Unlock Bypass program command sequence. The device uses the higher voltage on the WP#/ACC pin to accelerate the operation. Note that the WP#/ACC pin must not be at VHH any operation other than accelerated programming, or device damage may result. In addition, the WP#/ACC pin must not be left floating or unconnected; inconsistent behavior of the device may result. Figure 5 illustrates the algorithm for the program operation. Refer to the Erase and Program Operations table in the AC Characteristics section for parameters, and Figure 18 for timing diagrams.
and the system may read any number of autoselect codes without reinitiating the command sequence. Table 10 shows the address and data requirements for the command sequence. To determine sector protection information, the system must write to the appropriate sector group address (SGA). Tables 3 and 5 show the address range associated with each sector. The system must write the reset command to return to the read mode (or erase-suspend-read mode if the device was previously in Erase Suspend).
Enter SecSi Sector/Exit SecSi Sector Command Sequence
The SecSi Sector region provides a secured data area containing an 16-byte random Electronic Serial Number (ESN). The system can access the SecSi Sector region by issuing the three-cycle Enter SecSi Sector command sequence. The device continues to access the SecSi Sector region until the system issues the four-cycle Exit SecSi Sector command sequence. The Exit SecSi Sector command sequence returns the device to normal operation. Table 10 shows the address and data requirements for both command sequences. See also "SecSi (Secured Silicon) Sector Flash Memory Region" for further information. Note that a hardware reset (RESET#=V IL ) will reset the device to reading array data.
Word Program Command Sequence
Programming is a four-bus-cycle operation. The program command sequence is initiated by writing two unlock write cycles, followed by the program set-up command. The program address and data are written next, which in turn initiate the Embedded Program algorithm. The system is not required to provide further controls or timings. The device automatically provides internally generated program pulses and verifies the programmed cell margin. Table 10 shows the address and data requirements for the program command sequence. When the Embedded Program algorithm is complete, the device then returns to the read mode and addresses are no longer latched. The system can determine the status of the program operation by using DQ7, DQ6, or RY/BY#. Refer to the Write Operation Status section for information on these status bits. Any commands written to the device during the Embedded Program Algorithm are ignored. Note that a hardware reset immediately terminates the program operation. The program command sequence should be reinitiated once the device has returned to the read mode, to ensure data integrity. Programming is allowed in any sequence and across sector boundaries. A bit cannot be programmed
Chip Erase Command Sequence
Chip erase is a six bus cycle operation. The chip erase command sequence is initiated by writing two unlock
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INFORMATION
Start
START
555h/AAh Set Unlock Bypass Mode
Write Program Command Sequence
2AAh/55h
555h/20h
XXXh/A0h
Embedded Program algorithm in progress
Data Poll from System
Verify Data?
Program Address/Program Data
No
Yes
Data# Polling Device
Increment Address
Verify Byte? Yes Increment Address No No In Unlock Bypass Program
No
Last Address?
Yes Programming Completed
Last Address ? Yes
Note: See Table 10 for program command sequence.
Programming Completed
Figure 5.
Program Operation
(BA) XXXh/90h
XXXh/F0h
Reset Unlock Bypass Mode
Figure 4.
Unlock Bypass Algorithm
cycles, followed by a set-up command. Two additional unlock write cycles are then followed by the chip erase command, which in turn invokes the Embedded Erase algorithm. The device does not require the system to preprogram prior to erase. The Embedded Erase algorithm automatically preprograms and verifies the entire memory for an all zero data pattern prior to electrical erase. The system is not required to provide any controls or timings during these operations. Table 10 shows the address and data requirements for the chip erase command sequence.
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INFORMATION When the Embedded Erase algorithm is complete, the device returns to reading array data and addresses are no longer latched. Note that while the Embedded Erase operation is in progress, the system can read data from the non-erasing sector. The system can determine the status of the erase operation by reading DQ7, DQ6, DQ2, or RY/BY# in the erasing sector. Refer to the Write Operation Status section for information on these status bits. Once the sector erase operation has begun, only the Erase Suspend command is valid. All other commands are ignored. However, note that a hardware reset immediately terminates the erase operation. If that occurs, the sector erase command sequence should be reinitiated once the device has returned to reading array data, to ensure data integrity. Figure 6 illustrates the algorithm for the erase operation. Refer to the Erase and Program Operations tables in the AC Characteristics section for parameters, and Figure 20 section for timing diagrams.
When the Embedded Erase algorithm is complete, the device returns to the read mode and addresses are no longer latched. The system can determine the status of the erase operation by using DQ7, DQ6, DQ2, or RY/BY#. Refer to the Write Operation Status section for information on these status bits. Any commands written during the chip erase operation are ignored. However, note that a hardware reset immediately terminates the erase operation. If that occurs, the chip erase command sequence should be reinitiated once the device has returned to reading array data, to ensure data integrity. Figure 6 illustrates the algorithm for the erase operation. Refer to the Erase and Program Operations tables in the AC Characteristics section for parameters, and Figure 20 section for timing diagrams.
Sector Erase Command Sequence
Sector erase is a six bus cycle operation. The sector erase command sequence is initiated by writing two unlock cycles, followed by a set-up command. Two additional unlock cycles are written, and are then followed by the address of the sector to be erased, and the sector erase command. Table 10 shows the address and data requirements for the sector erase command sequence. The device does not require the system to preprogram prior to erase. The Embedded Erase algorithm automatically programs and verifies the entire memory for an all zero data pattern prior to electrical erase. The system is not required to provide any controls or timings during these operations. After the command sequence is written, a sector erase time-out of 50 s occurs. During the time-out period, additional sector addresses and sector erase commands may be written. Loading the sector erase buffer may be done in any sequence, and the number of sectors may be from one sector to all sectors. The time between these additional cycles must be less than 50 s, otherwise erasure may begin. Any sector erase address and command following the exceeded time-out may or may not be accepted. It is recommended that processor interrupts be disabled during this time to ensure all commands are accepted. The interrupts can be re-enabled after the last Sector Erase command is written. Any command other than S e ct o r E ra se o r E ra s e S u sp en d d u r in g th e time-out period resets the device to the read mode. The system must rewrite the command sequence and any additional addresses and commands. The system can monitor DQ3 to determine if the sector erase timer has timed out (See the section on DQ3: Sector Erase Timer.). The time-out begins from the rising edge of the final WE# pulse in the command sequence.
Erase Suspend/Erase Resume Commands
The Erase Suspend command, B0h, allows the system to interrupt a sector erase operation and then read data from, or program data to, any sector not selected for erasure. This command is valid only during the sector erase operation, including the 50 s time-out period during the sector erase command sequence. The Erase Suspend command is ignored if written during the chip erase operation or Embedded Program algorithm. When the Erase Suspend command is written during the sector erase operation, the device requires a maximum of 20 s to suspend the erase operation. However, when the Erase Suspend command is written during the sector erase time-out, the device immediately terminates the time-out period and suspends the erase operation. After the erase operation has been suspended, the device enters the erase-suspend-read mode. The system can read data from or program data to any sector not selected for erasure. (The device "erase suspends" all sectors selected for erasure.) Note that unlock bypass programming is not allowed when the device is erase-suspended. Reading at any address within erase-suspended sectors produces status information on DQ7-DQ0. The system can use DQ7, or DQ6 and DQ2 together, to d e ter m in e i f a se cto r is act ive ly e ra sin g o r is erase-suspended. Refer to the Write Operation Status section for information on these status bits. After an erase-suspended program operation is complete, the device returns to the erase-suspend-read
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INFORMATION
mode. The system can determine the status of the program operation using the DQ7 or DQ6 status bits, just as in the standard word program operation. Refer to the Write Operation Status section for more information. In the erase-suspend-read mode, the system can also issue the autoselect command sequence. Refer to the Autoselect Mode and Autoselect Command Sequence sections for details. To resume the sector erase operation, the system must write the Erase Resume command. The address of the erase-suspended sector is required when writing this command. Further writes of the Resume command are ignored. Another Erase Suspend command can be written after the chip has resumed erasing.
No
START
Write Erase Command Sequence (Notes 1, 2)
Data Poll to Erasing Bank from System
Embedded Erase algorithm in progress
Data = FFh?
Yes Erasure Completed
Notes: 1. See Table 10 for erase command sequence. 2. See the section on DQ3 for information on the sector erase timer.
Figure 6.
Erase Operation
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ADVANCE Table 10.
Command Sequence (Note 1) Read (Note 6) Reset (Note 7) Autoselect (Note 8) Manufacturer ID Device ID (Note 9) SecSi Sector Factory Protect (Note 10) Sector Group Protect Verify (Note 11) Cycles First Addr RA XXX 555 555 555 555 555 555 555 555 XXX XXX 555 555 BA BA Data RD F0 AA AA AA AA AA AA AA AA A0 90 AA AA B0 30 2AA 2AA 2AA 2AA 2AA 2AA 2AA 2AA PA XXX 2AA 2AA
INFORMATION
AM29PDS322D Command Definitions
Bus Cycles (Notes 2-5) Second Addr Data Third Addr Data Fourth Addr Data Fifth Addr Data Sixth Addr Data
1 1 4 6 4 4 3 4 4
55 55 55 55 55 55 55 55 PD 00 55 55
555 555 555 555 555 555 555 555
90 90 90 90 88 90 A0 20
X00 X01 X03 (SGA) X02 XXX PA
0001 227E 80/00 XX00/ XX01 00 PD X0E 2206 X0F 2201/ 2200
Enter SecSi Sector Region Exit SecSi Sector Region Program Unlock Bypass Unlock Bypass Program (Note 12) Unlock Bypass Reset (Note 13) Chip Erase Sector Erase Erase Suspend (Note 14) Erase Resume (Note 15)
3 2 2
6 6 1 1
555 555
80 80
555 555
AA AA
2AA 2AA
55 55
555 SA
10 30
Legend: X = Don't care RA = Address of the memory location to be read. RD = Data read from location RA during read operation. PA = Address of the memory location to be programmed. Addresses latch on the falling edge of the WE# or CE# pulse, whichever happens later. Notes: 1. See Table 1 for description of bus operations. 2. All values are in hexadecimal. 3. 4. 5. 6. 7. Except for the read cycle and the fourth and fifth cycle of the autoselect command sequence, all bus cycles are write cycles. Data bits DQ15-DQ8 are don't care in command sequences, except for RD and PD. Unless otherwise noted, address bits A20-A12 are don't cares in unlock sequence. No unlock or command cycles required when device is in read mode. The Reset command is required to return to the read mode (or to the erase-suspend-read mode if previously in Erase Suspend) when the device is in the autoselect mode, or if DQ5 goes high (while the device is providing status information). The fourth cycle of the autoselect command sequence is a read cycle. The system must provide the bank address to obtain the manufacturer ID, device ID, or SecSi Sector factory protect information. Data bits DQ15-DQ8 are don't care. See the Autoselect Command Sequence section for more information.
PD = Data to be programmed at location PA. Data latches on the rising edge of WE# or CE# pulse, whichever happens first. SGA = Address of the sector group to be verified (in autoselect mode) or erased. Address bits A20-A12 uniquely select any sector.
9.
The device ID must be read across the fourth, fifth and sixth cycles. The sixth cycle specifies 2201h for top boot or 2200h for bottom boot.
10. The data is 80h for factory locked and 00h for not factory locked. 11. The data is 00h for an unprotected sector group and 01h for a protected sector group. 12. The Unlock Bypass command is required prior to the Unlock Bypass Program command. 13. The Unlock Bypass Reset command is required to return to the read mode when the device is in the unlock bypass mode. 14. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend mode. The Erase Suspend command is valid only during a sector erase
15. The Erase Resume command is valid only during the Erase Suspend mode, and requires the bank address.
8.
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INFORMATION
WRITE OPERATION STATUS
The device provides several bits to determine the status of a program or erase operation: DQ2, DQ3, DQ5, DQ6, and DQ7. Table 11 and the following subsections describe the function of these bits. DQ7 and DQ6 each offer a method for determining whether a program or erase operation is complete or in progress. The device also provides a hardware-based output signal, RY/BY#, to determine whether an Embedded Program or Erase operation is in progress or has been completed. invalid. Valid data on DQ0-DQ7 will appear on successive read cycles. Table 11 shows the outputs for Data# Polling on DQ7. Figure 7 shows the Data# Polling algorithm. Figure 22 in the AC Characteristics section shows the Data# Polling timing diagram.
DQ7: Data# Polling
The Data# Polling bit, DQ7, indicates to the host system whether an Embedded Program or Erase algorithm is in progress or completed, or whether the device is in Erase Suspend. Data# Polling is valid after the rising edge of the final WE# pulse in the command sequence. During the Embedded Program algorithm, the device outputs on DQ7 the complement of the datum programmed to DQ7. This DQ7 status also applies to programming during Erase Suspend. When the Embedded Program algorithm is complete, the device outputs the datum programmed to DQ7. The system must provide the program address to read valid status information on DQ7. If a program address falls within a protected sector, Data# Polling on DQ7 is active for approximately 1 s, then the device returns to the read mode. During the Embedded Erase algorithm, Data# Polling produces a "0" on DQ7. When the Embedded Erase algorithm is complete, or if the device enters the Erase Suspend mode, Data# Polling produces a "1" on DQ7. The system must provide an address within any of the sectors selected for erasure to read valid status information on DQ7. After an erase command sequence is written, if all sectors selected for erasing are protected, Data# Polling on DQ7 is active for approximately 100 s, then the device returns to the read mode. If not all selected sectors are protected, the Embedded Erase algorithm erases the unprotected sectors, and ignores the selected sectors that are protected. However, if the system reads DQ7 at an address within a protected sector, the status may not be valid. Just prior to the completion of an Embedded Program or Erase operation, DQ7 may change asynchronously with DQ0-DQ6 while Output Enable (OE#) is asserted low. That is, the device may change from providing status information to valid data on DQ7. Depending on when the system samples the DQ7 output, it may read the status or valid data. Even if the device has completed the program or erase operation and DQ7 has valid data, the data outputs on DQ0-DQ6 may be still
START
Read DQ7-DQ0 Addr = VA
DQ7 = Data?
Yes
No No
DQ5 = 1?
Yes Read DQ7-DQ0 Addr = VA
DQ7 = Data?
Yes
No FAIL PASS
Notes: 1. VA = Valid address for programming. During a sector erase operation, a valid address is any sector address within the sector being erased. During chip erase, a valid address is any non-protected sector address. 2. DQ7 should be rechecked even if DQ5 = "1" because DQ7 may change simultaneously with DQ5.
Figure 7.
Data# Polling Algorithm
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INFORMATION Table 11 shows the outputs for Toggle Bit I on DQ6. Figure 8 shows the toggle bit algorithm. Figure 23 in the "AC Characteristics" section shows the toggle bit timing diagrams. Figure 24 shows the differences between DQ2 and DQ6 in graphical form. See also the subsection on DQ2: Toggle Bit II.
RY/BY#: Ready/Busy#
The RY/BY# is a dedicated, open-drain output pin which indicates whether an Embedded Algorithm is in progress or complete. The RY/BY# status is valid after the rising edge of the final WE# pulse in the command sequence. Since RY/BY# is an open-drain output, several RY/BY# pins can be tied together in parallel with a pull-up resistor to VCC. If the output is low (Busy), the device is actively erasing or programming. (This includes programming in the Erase Suspend mode.) If the output is high (Ready), the device is in the read mode, the standby mode, or the device is in the erase-suspend-read mode. Table 11 shows the outputs for RY/BY#.
START
Read DQ7-DQ0
DQ6: Toggle Bit I
Toggle Bit I on DQ6 indicates whether an Embedded Program or Erase algorithm is in progress or complete, or whether the device has entered the Erase Suspend mode. Toggle Bit I may be read at any address, and is valid after the rising edge of the final WE# pulse in the command sequence (prior to the program or erase operation), and during the sector erase time-out. During an Embedded Program or Erase algorithm operation, successive read cycles to any address cause DQ6 to toggle. The system may use either OE# or CE# to control the read cycles. When the operation is complete, DQ6 stops toggling. After an erase command sequence is written, if all sectors selected for erasing are protected, DQ6 toggles for approximately 100 s, then returns to reading array data. If not all selected sectors are protected, the Embedded Erase algorithm erases the unprotected sectors, and ignores the selected sectors that are protected. The system can use DQ6 and DQ2 together to determine whether a sector is actively erasing or is erase-suspended. When the device is actively erasing (that is, the Embedded Erase algorithm is in progress), DQ6 toggles. When the device enters the Erase Suspend mode, DQ6 stops toggling. However, the system must also use DQ2 to determine which sectors are erasing or erase-suspended. Alternatively, the system can use DQ7 (see the subsection on DQ7: Data# Polling). If a program address falls within a protected sector, DQ6 toggles for approximately 1 s after the program command sequence is written, then returns to reading array data. DQ6 also toggles during the erase-suspend-program mode, and stops toggling once the Embedded Program algorithm is complete.
No
Read DQ7-DQ0
Toggle Bit = Toggle? Yes
No
DQ5 = 1?
Yes
Read DQ7-DQ0 Twice
Toggle Bit = Toggle?
No
Yes Program/Erase Operation Not Complete, Write Reset Command Program/Erase Operation Complete
Note: The system should recheck the toggle bit even if DQ5 = "1" because the toggle bit may stop toggling as DQ5 changes to "1." See the subsections on DQ6 and DQ2 for more information.
Figure 8.
Toggle Bit Algorithm
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INFORMATION the toggle bit and DQ5 through successive read cycles, determining the status as described in the previous paragraph. Alternatively, it may choose to perform other system tasks. In this case, the system must start at the beginning of the algorithm when it returns to determine the status of the operation (top of Figure 8).
DQ2: Toggle Bit II
The "Toggle Bit II" on DQ2, when used with DQ6, indicates whether a particular sector is actively erasing (that is, the Embedded Erase algorithm is in progress), or whether that sector is erase-suspended. Toggle Bit II is valid after the rising edge of the final WE# pulse in the command sequence. DQ2 toggles when the system reads at addresses within those sectors that have been selected for erasure. (The system may use either OE# or CE# to control the read cycles.) But DQ2 cannot distinguish whether the sector is actively erasing or is erase-suspended. DQ6, by comparison, indicates whether the device is actively erasing, or is in Erase Suspend, but cannot distinguish which sectors are selected for erasure. Thus, both status bits are required for sector and mode information. Refer to Table 11 to compare outputs for DQ2 and DQ6. Figure 8 shows the toggle bit algorithm in flowchart form, and the section "DQ2: Toggle Bit II" explains the algorithm. See also the DQ6: Toggle Bit I subsection. Figure 23 shows the toggle bit timing diagram. Figure 24 shows the differences between DQ2 and DQ6 in graphical form.
DQ5: Exceeded Timing Limits
DQ5 indicates whether the program or erase time has exceeded a specified internal pulse count limit. Under these conditions DQ5 produces a "1," indicating that the program or erase cycle was not successfully completed. The device may output a "1" on DQ5 if the system tries to program a "1" to a location that was previously programmed to "0." Only an erase operation can change a "0" back to a "1." Under this condition, the device halts the operation, and when the timing limit has been exceeded, DQ5 produces a "1." Under both these conditions, the system must write the reset command to return to the read mode (or to the erase-suspend-read mode if the device was previously in the erase-suspend-program mode).
DQ3: Sector Erase Timer
After writing a sector erase command sequence, the system may read DQ3 to determine whether or not erasure has begun. (The sector erase timer does not apply to the chip erase command.) If additional sectors are selected for erasure, the entire time-out also applies after each additional sector erase command. When the time-out period is complete, DQ3 switches from a "0" to a "1." If the time between additional sector erase commands from the system can be assumed to be less than 50 s, the system need not monitor DQ3. See also the Sector Erase Command Sequence section. After the sector erase command is written, the system should read the status of DQ7 (Data# Polling) or DQ6 (Toggle Bit I) to ensure that the device has accepted the command sequence, and then read DQ3. If DQ3 is "1," the Embedded Erase algorithm has begun; all further commands (except Erase Suspend) are ignored until the erase operation is complete. If DQ3 is "0," the device will accept additional sector erase commands. To ensure the command has been accepted, the system software should check the status of DQ3 prior to and following each subsequent sector erase command. If DQ3 is high on the second status check, the last command might not have been accepted. Table 11 shows the status of DQ3 relative to the other status bits.
Reading Toggle Bits DQ6/DQ2
Refer to Figure 8 for the following discussion. Whenever the system initially begins reading toggle bit status, it must read DQ7-DQ0 at least twice in a row to determine whether a toggle bit is toggling. Typically, the system would note and store the value of the toggle bit after the first read. After the second read, the system would compare the new value of the toggle bit with the first. If the toggle bit is not toggling, the device has completed the program or erase operation. The system can read array data on DQ7-DQ0 on the following read cycle. However, if after the initial two read cycles, the system determines that the toggle bit is still toggling, the system also should note whether the value of DQ5 is high (see the section on DQ5). If it is, the system should then determine again whether the toggle bit is toggling, since the toggle bit may have stopped toggling just as DQ5 went high. If the toggle bit is no longer toggling, the device has successfully completed the program or erase operation. If it is still toggling, the device did not completed the operation successfully, and the system must write the reset command to return to reading array data. The remaining scenario is that the system initially determines that the toggle bit is toggling and DQ5 has not gone high. The system may continue to monitor
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ADVANCE Table 11.
Status Embedded Program Algorithm Embedded Erase Algorithm Erase Erase-Suspend- Suspended Sector Read Non-Erase Suspended Sector Erase-Suspend-Program
INFORMATION Write Operation Status
Standard Mode Erase Suspend Mode
DQ7 (Note 2) DQ7# 0 1 Data DQ7#
DQ6 Toggle Toggle No toggle Data Toggle
DQ5 (Note 1) 0 0 0 Data 0
DQ3 N/A 1 N/A Data N/A
DQ2 (Note 2) No toggle Toggle Toggle Data N/A
RY/BY# 0 0 1 1 0
Notes: 1. DQ5 switches to `1' when an Embedded Program or Embedded Erase operation has exceeded the maximum timing limits. Refer to the section on DQ5 for more information. 2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further details.
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INFORMATION
ABSOLUTE MAXIMUM RATINGS
Storage Temperature Plastic Packages . . . . . . . . . . . . . . . -65C to +150C Ambient Temperature with Power Applied . . . . . . . . . . . . . -65C to +125C Voltage with Respect to Ground VCC (Note 1) . . . . . . . . . . . . . . . . .-0.5 V to +2.5 V A9, OE#, and RESET# (Note 2) . . . . . . . . . . . . . . . . . . . . . -0.5 V to +11 V WP#/ACC . . . . . . . . . . . . . . . . . .-0.5 V to +12.6 V All other pins (Note 1) . . . . . . -0.5 V to VCC +0.5 V Output Short Circuit Current (Note 3) . . . . . . 100 mA
Notes: 1. Minimum DC voltage on input or I/O pins is -0.5 V. During voltage transitions, input or I/O pins may overshoot V SS to -2.0 V for periods of up to 20 ns. Maximum DC voltage on input or I/O pins is VCC +0.5 V. See Figure 9. During voltage transitions, input or I/O pins may overshoot to VCC +2.0 V for periods up to 20 ns. See Figure 10. 2. Minimum DC input voltage on pins A9, OE#, RESET#, and WP#/ACC is -0.5 V. During voltage transitions, A9, OE#, WP#/ACC, and RESET# may overshoot VSS to -2.0 V for periods of up to 20 ns. See Figure 9. Maximum DC input voltage on pin A9 is +12.5 V which may overshoot to +14.0 V for periods up to 20 ns. Maximum DC input voltage on WP#/ACC is +12.6 V which may overshoot to +12.0 V for periods up to 20 ns. 3. No more than one output may be shorted to ground at a time. Duration of the short circuit should not be greater than one second. Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational sections of this data sheet is not implied. Exposure of the device to absolute maximum rating conditions for extended periods may affect device reliability. 20 ns 20 ns +0.8 V -0.5 V -2.0 V 20 ns
Figure 9. Maximum Negative Overshoot Waveform
20 ns VCC +2.0 V VCC +0.5 V 2.0 V 20 ns 20 ns
Figure 10. Maximum Positive Overshoot Waveform
OPERATING RANGES
Industrial (I) Devices Ambient Temperature (TA) . . . . . . . . . -40C to +85C VCC Supply Voltages VCC for standard voltage range . . . . . . . 1.8 V to 2.2 V
Operating ranges define those limits between which the functionality of the device is guaranteed.
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INFORMATION
DC CHARACTERISTICS CMOS Compatible
Parameter Symbol ILI ILIT ILO ICC1 ICC2 ICC3 ICC4 Parameter Description Input Load Current A9 Input Load Current Output Leakage Current VCC Active Inter-Page Read Current (Notes 1, 2) Test Conditions VIN = VSS to VCC, VCC = VCC max VCC = VCC max; A9, OE#, RESET# = 11 V VOUT = VSS to VCC, VCC = VCC max 1 MHz CE# = VIL, OE# = VIH, 10 MHz 2.5 24 15 0.2 0.1 Min Typ Max 1.0 35 1.0 3 mA 28 30 5 5 mA A A Unit A A A
VCC Active Write Current (Notes 2, 3) CE# = VIL, OE# = VIH VCC Standby Current (Note 2) VCC Reset Current (Note 2) VCC Automatic Sleep Mode Current (Notes 2, 4) VCC Active Read-While-Program Current (Notes 1, 2, 5) VCC Active Read-While-Erase Current (Notes 1, 2, 5) VCC Active Program-While-Erase-Suspended Current (Note 2) VCC Active Intra-Page Read Current WP#/ACC Accelerated Program Current Input Low Voltage Input High Voltage Voltage for WP#/ACC Sector Protect/Unprotect and Program Acceleration VCC = 1.8-2.2 V CE#, RESET# = VCC 0.3 V WP#/ACC = VCC 0.3 V, RESET# = VSS 0.3 V CE# = VSS 0.3 V; RESET# = VCC 0.3 V, VIN = VCC 0.3 V or VSS 0.3 V CE# = VIL, OE# = VIH CE# = VIL, OE# = VIH
ICC5
0.2
5
A
ICC6 ICC7
30 30
55 55
mA mA
ICC8
CE# = VIL, OE# = VIH 10 MHz
17 0.5 1 12 -0.5 0.8 x VCC 8.5
35 1
mA
ICC9 IACC VIL VIH VACC
CE# = VIL, OE# = VIH
mA 20 MHz 2 20 VCC x 0.2 VCC + 0.3 12.5 mA V V V
VCC = VCCMax, WP#/ACC = VACCMax
VID VOL VOH VLKO
Voltage for Autoselect and Temporary VCC = 1.8-2.2 V Sector Unprotect Output Low Voltage Output High Voltage Low VCC Lock-Out Voltage IOL = 100 A, VCC = VCC min IOH = -100 A
9
11 0.1
V V V
VCC - 0.1 1.2 1.5
V
Notes: 1. The ICC current listed is typically less than 2 mA/MHz, with OE# at VIH. 2. 3. 4. 5. Maximum ICC specifications are tested with VCC = VCCmax. ICC active while Embedded Erase or Embedded Program is in progress. Automatic sleep mode enables the low power mode when addresses remain stable for 150 ns. Embedded algorithm (program or erase) is in progress (at 8 MHz).
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INFORMATION
DC CHARACTERISTICS Zero-Power Flash
25
Supply Current in mA
20
15
10
5 0 0 500 1000 1500 2000 Time in ns 2500 3000 3500 4000
Note: Addresses are switching at 1 MHz
Figure 11.
ICC1 Current vs. Time (Showing Active and Automatic Sleep Currents)
18 2.0 V 15
12 Supply Current in mA
9
6
3
0 1
Note: T = 25 C
2
3
4
5
6
7
8
Frequency in MHz Figure 12. Typical ICC1 vs. Frequency
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INFORMATION
TEST CONDITIONS
Table 12.
Test Condition Device Under Test CL Output Load Capacitance, CL (including jig capacitance) Input Rise and Fall Times Input Pulse Levels Input timing measurement reference levels Note: Diodes are IN3064 or equivalent Output timing measurement reference levels
Test Specifications
10 30 5 0.0-2.0 V 1.0 1.0 12 100 Unit pF ns V V V
Figure 13.
Test Setup
KEY TO SWITCHING WAVEFORMS
WAVEFORM INPUTS Steady Changing from H to L Changing from L to H Don't Care, Any Change Permitted Does Not Apply Changing, State Unknown Center Line is High Impedance State (High Z) OUTPUTS
KS000010-PAL
VCC 0.0 V
Input
0.5 VCC
Measurement Level
1.0 V
Output
Figure 14.
Input Waveforms and Measurement Levels
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INFORMATION
AC CHARACTERISTICS Read-Only Operations
Parameter JEDEC tAVAV tAVQV Std tRC tACC tPRC tPACC tELQV tGLQV tEHQZ tGHQZ tAXQX tCE tOE tDF tDF tOH Description Read Cycle Time (Note 1) Address to Output Delay Page Read Cycle Page Address to Output Delay Chip Enable to Output Delay Output Enable to Output Delay Chip Enable to Output High Z (Notes 1, 3) Output Enable to Output High Z (Notes 1, 3) Output Hold Time From Addresses, CE# or OE#, Whichever Occurs First Read tOEH Output Enable Hold Time (Note 1) Toggle and Data# Polling CE#, OE# = VIL OE# = VIL CE#, OE# = VIL Test Setup Min Max Min Max Max Max Max Max Min Min Min Speed Option 10 100 100 40 40 100 35 16 16 0 0 10 12 120 120 50 50 120 50 Unit ns ns ns ns ns ns ns ns ns ns ns
Notes: 1. Not 100% tested. 2. See Figure 13 and Table 12 for test specifications. 3. Measurements performed by placing a 50 termination on the data pin with a bias of VCC/2. The time from OE# high to the data bus driven to VCC/2 is taken as tDF.
tRC Addresses CE# tRH tRH OE# tOEH WE# HIGH Z Outputs RESET# RY/BY# Output Valid tCE tOH HIGH Z tOE tDF Addresses Stable tACC
0V
Figure 15.
Conventional Read Operation Timings
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AC CHARACTERISTICS
A20 to A2 Same page Addresses
A1 to A0
Aa tRC tACC
Ab tPRC
Ac tPRC
Ad
CE#
tCE tOE tOEH tPACC tOH High-Z tPACC tOH Db tPACC tOH Dc tOH Dd tDF
OE# WE#
Output
Da
Figure 16.
Page Mode Read Timings
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AC CHARACTERISTICS Hardware Reset (RESET#)
Parameter JEDEC Std tReady tReady tRP tRH tRPD tRB Description RESET# Pin Low (During Embedded Algorithms) to Read Mode (See Note) RESET# Pin Low (NOT During Embedded Algorithms) to Read Mode (See Note) RESET# Pulse Width Reset High Time Before Read (See Note) RESET# Low to Standby Mode RY/BY# Recovery Time Max Max Min Min Min Min All Speed Options 20 500 500 200 20 0 Unit s ns ns ns s ns
Note: Not 100% tested.
RY/BY#
CE#, OE# tRH RESET# tRP tReady
Reset Timings NOT during Embedded Algorithms Reset Timings during Embedded Algorithms
tReady RY/BY# tRB CE#, OE#
RESET# tRP
Figure 17.
Reset Timings
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AC CHARACTERISTICS Erase and Program Operations
Parameter JEDEC tAVAV tAVWL Std tWC tAS tASO tWLAX tAH tAHT tDVWH tWHDX tDS tDH tCEPH tOEPH tGHWL tELWL tWHEH tWLWH tWHDL tGHWL tCS tCH tWP tWPH tSR/W tWHWH1 tWHWH1 tWHWH2 tWHWH1 tWHWH1 tWHWH2 tVCS tRB tBUSY Notes: 1. Not 100% tested. 2. See the "Erase And Programming Performance" section for more information. Description Write Cycle Time (Note 1) Address Setup Time Address Setup Time to OE# low during toggle bit polling Address Hold Time Address Hold Time From CE# or OE# high during toggle bit polling Data Setup Time Data Hold Time Chip Enable High during toggle bit polling Output Enable High during toggle bit polling Read Recovery Time Before Write (OE# High to WE# Low) CE# Setup Time CE# Hold Time Write Pulse Width Write Pulse Width High Latency Between Read and Write Operations Programming Operation (Note 2) Accelerated Programming Operation (Note 2) Sector Erase Operation (Note 2) VCC Setup Time (Note 1) Write Recovery Time from RY/BY# Program/Erase Valid to RY/BY# Delay Min Min Min Min Min Min Min Min Min Min Min Min Min Min Min Typ Typ Typ Min Min Min Speed Option 10 100 0 15 60 0 60 0 20 20 0 0 0 60 60 0 11 5 1 50 0 90 12 120 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns s s sec s ns ns
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AC CHARACTERISTICS
Program Command Sequence (last two cycles) tWC Addresses 555h tAS PA tAH CE# OE# tWP WE# tCS tDS Data tDH PD tBUSY RY/BY# Status DOUT tRB tWPH tWHWH1 PA PA Read Status Data (last two cycles)
tCH
A0h
VCC tVCS
ote: PA = program address, PD = program data, DOUT is the true data at the program address.
Figure 18.
Program Operation Timings
VHH
ACC
VIL or VIH tVHH tVHH
VIL or VIH
Figure 19.
Accelerated Program Timing Diagram
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AC CHARACTERISTICS
Erase Command Sequence (last two cycles) tWC Addresses 2AAh tAS SA
555h for chip erase
Read Status Data
VA tAH
VA
CE#
OE# tWP WE# tCS tDS
tCH
tWPH
tWHWH2
tDH Data 55h 30h
10 for Chip Erase In Progress Complete
tBUSY RY/BY# tVCS VCC
tRB
Notes: 1. SA = sector address (for Sector Erase), VA = Valid Address for reading status data (see "Write Operation Status").
Figure 20.
Chip/Sector Erase Operation Timings
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AC CHARACTERISTICS
tWC Addresses
Valid PA
tRC
Valid RA
tWC
Valid PA
tWC
Valid PA
tAH tACC CE# tCE tOE OE# tOEH tWP WE# tWPH tDS tDH Data
Valid In
tCPH
tCP
tGHWL
tDF tOH
Valid Out Valid In Valid In
tSR/W
WE# Controlled Write Cycle Read Cycle CE# Controlled Write Cycles
Figure 21.
Back-to-back Read/Write Cycle Timings
tRC Addresses VA tACC tCE CE# tCH OE# tOEH WE# tOH DQ7
High Z
VA
VA
tOE tDF
Complement
Complement
True
Valid Data
High Z
DQ0-DQ6 tBUSY RY/BY#
Status Data
Status Data
True
Valid Data
Note: VA = Valid address. Illustration shows first status cycle after command sequence, last status read cycle, and array data read cycle.
Figure 22.
Data# Polling Timings (During Embedded Algorithms)
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AC CHARACTERISTICS
tAHT Addresses tAHT tASO CE# tOEH WE# tOEPH OE# tDH DQ6/DQ2 Valid Data
Valid Status
tAS
tCEPH
tOE
Valid Status Valid Status
Valid Data
(first read) RY/BY#
(second read)
(stops toggling)
Note: VA = Valid address; not required for DQ6. Illustration shows first two status cycle after command sequence, last status read cycle, and array data read cycle
Figure 23.
Toggle Bit Timings (During Embedded Algorithms)
Enter Embedded Erasing WE#
Erase Suspend Erase
Enter Erase Suspend Program Erase Suspend Program
Erase Resume Erase Suspend Read Erase Erase Complete
Erase Suspend Read
DQ6
DQ2 Note: DQ2 toggles only when read at an address within an erase-suspended sector. The system may use OE# or CE# to toggle DQ2 and DQ6.
Figure 24.
DQ2 vs. DQ6
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INFORMATION
AC CHARACTERISTICS Temporary Sector Unprotect
Parameter JEDEC Std tVIDR tVHH tRSP tRRB Description VID Rise and Fall Time (See Note) VHH Rise and Fall Time (See Note) RESET# Setup Time for Temporary Sector/Sector Block Unprotect RESET# Hold Time from RY/BY# High for Temporary Sector/Sector Block Unprotect Min Min Min Min All Speed Options 500 500 4 4 Unit ns ns s s
Note: Not 100% tested.
VID RESET# VSS, VIL, or VIH tVIDR Program or Erase Command Sequence CE# tVIDR
VID VSS, VIL, or VIH
WE# tRSP RY/BY# tRRB
Figure 25.
Temporary Sector Group Unprotect Timing Diagram
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INFORMATION
AC CHARACTERISTICS
VID VIH
RESET#
SA, A6, A1, A0
Valid* Sector/Sector Block Protect or Unprotect
Valid* Verify 40h
Sector/Sector Block Protect: 150 s, Sector/Sector Block Unprotect: 15 ms
Valid*
Data
60h
60h
Status
1 s CE#
WE#
OE#
For sector group protect, A6 = 0, A1 = 1, A0 = 0. For sector group unprotect, A6 = 1, A1 = 1, A0 = 0.
Figure 26.
Sector Group Protect and Unprotect Timing Diagram
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INFORMATION
AC CHARACTERISTICS Alternate CE# Controlled Erase and Program Operations
Parameter JEDEC tAVAV tAVWL tELAX tDVEH tEHDX tGHEL tWLEL tEHWH tELEH tEHEL tWHWH1 tWHWH1 tWHWH2 Std tWC tAS tAH tDS tDH tGHEL tWS tWH tCP tCPH tWHWH1 tWHWH1 tWHWH2 Description Write Cycle Time (Note 1) Address Setup Time Address Hold Time Data Setup Time Data Hold Time Read Recovery Time Before Write (OE# High to WE# Low) WE# Setup Time WE# Hold Time CE# Pulse Width CE# Pulse Width High Programming Operation (Note 2) Accelerated Programming Operation (Note 2) Sector Erase Operation (Note 2) Min Min Min Min Min Min Min Min Min Min Typ Typ Typ 5 1 Speed Option 10 100 0 60 60 0 0 0 0 60 60 16 5 12 120 Unit ns ns ns ns ns ns ns ns ns ns s s sec
Notes: 1. Not 100% tested. 2. See the "Erase And Programming Performance" section for more information.
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INFORMATION
AC CHARACTERISTICS
555 for program 2AA for erase PA for program SA for sector erase 555 for chip erase
Data# Polling PA
Addresses tWC tWH WE# tGHEL OE# tCP CE# tWS tCPH tDS tDH Data tRH
A0 for program 55 for erase PD for program 30 for sector erase 10 for chip erase
tAS tAH
tWHWH1 or 2
tBUSY
DQ7#
DOUT
RESET#
RY/BY#
Notes: 1. Figure indicates last two bus cycles of a program or erase operation. 2. PA = program address, SA = sector address, PD = program data. 3. DQ7# is the complement of the data written to the device. DOUT is the data written to the device. 4. Waveforms are for the word mode.
Figure 27.
Alternate CE# Controlled Write (Erase/Program) Operation Timings
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INFORMATION
ERASE AND PROGRAMMING PERFORMANCE
Parameter Sector Erase Time Chip Erase Time Word Program Time Accelerated Word Program Time Chip Program Time (Note 3) Typ (Note 1) 1 93 16 5 20 100 360 Max (Note 2) 10 Unit sec sec s s sec Comments Excludes 00h programming prior to erasure (Note 4) Excludes system level overhead (Note 5)
Notes: 1. Typical program and erase times assume the following conditions: 25C, 2.0 V VCC, 1,000,000 cycles. Additionally, programming typicals assume checkerboard pattern. 2. Under worst case conditions of 90C, VCC = 1.8 V, 1,000,000 cycles. 3. The typical chip programming time is considerably less than the maximum chip programming time listed, since most words program faster than the maximum program times listed. 4. In the pre-programming step of the Embedded Erase algorithm, all bits are programmed to 00h before erasure. 5. System-level overhead is the time required to execute the two- or four-bus-cycle sequence for the program command. See Table 10 for further information on command definitions. 6. The device has a minimum erase and program cycle endurance of 1,000,000 cycles.
LATCHUP CHARACTERISTICS
Description Input voltage with respect to VSS on all pins except I/O pins (including A9, OE#, and RESET#) Input voltage with respect to VSS on all I/O pins VCC Current Min -1.0 V -1.0 V -100 mA Max 12.5 V VCC + 1.0 V +100 mA
Note: Includes all pins except VCC. Test conditions: VCC = 1.8 V, one pin at a time.
DATA RETENTION
Parameter Description Minimum Pattern Data Retention Time 125C 20 Years Test Conditions 150C Min 10 Unit Years
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INFORMATION
PHYSICAL DIMENSIONS FBD048--48-Ball Fine-Pitch Ball Grid Array (FBGA) 6 x 12 mm package
Dwg rev AF; 1/2000
xFBD 048 6.00 mm x 12.00 mm PACKAGE
1.20 0.20 0.94 0.84 12.00 BSC 6.00 BSC 5.60 BSC 4.00 BSC 8 6 48 0.25 0.30 0.35 0.80 BSC 0.40 BSC
* For reference only. BSC is an ANSI standard for Basic Space Centering.
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INFORMATION
REVISION SUMMARY Revision A (December 4, 2000)
Initial release.
Erase Suspend/Erase Resume Commands Noted in the third paragraph that unlock bypass programming is not allowed when the device is erase suspended.
Revision A+1 (February 16, 2001)
Ordering Information Added "U" designator to package marking. Deleted burn-in option.
Revision A+4 (August 7, 2002)
Distinctive Characteristics Removed "Supports Common Flash Memory Interface (CFI)) Table 10. AM29PDS322D Command Definitions Changed the Command Cycle Device ID cycle from 6 to 4.
Revision A+2 (August 31, 2001)
Autoselect Command Sequence Modified section to point to appropriate tables for autoselect functions.
Revision A+3 (February 18, 2002)
Global Removed "Advance Information" designation from data sheet.
Trademarks Copyright (c) 2002 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD logo, and combinations thereof are registered trademarks of Advanced Micro Devices, Inc. ExpressFlash is a trademark of Advanced Micro Devices, Inc. Product names used in this publication are for identification purposes only and may be trademarks of their respective companies
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