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White Electronic Designs
16Mx32 SDRAM
FEATURES
40% Space Savings vs. Monolithic Solution Reduced System Inductance and Capacitance 3.3V Operating Supply Voltage Fully Synchronous to Positive Clock Edge Clock Frequencies of 100MHz - 133MHz Burst Operation * Sequential or Interleave * Burst Length = Programmable 1, 2, 4, 8 or Full Page * Burst Read and Write * Multiple Burst Read and Single Write Data Mask Control Per Byte Auto and Self Refresh Automatic and Controlled Precharge Commands Suspend Mode and Power Down Mode 119 Pin BGA, 17mm x 23mm
WED3DL3216V
DESCRIPTION
The WED3DL3216V is an 16Mx32 Synchronous DRAM configured as 4x4Mx32. The SDRAM BGA is constructed with two 16Mx16 SDRAM die mounted on a multi-layer laminate substrate and packaged in a 119 lead, 17mm by 23mm, BGA. The WED3DL3216V is available in clock speeds of 133MHz, 125MHz, and 100MHz. The range of operating frequencies, programmable burst lengths and programmable latencies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications. The package and design provides performance enhancements via a 50% reduction in capacitance vs. two monolithic devices. The design includes internal ground and power planes which reduces inductance on the ground and power pins allowing for improved decoupling and a reduction in system noise.
PIN CONFIGURATION (Top view)
A B C D E F G H J K L M N P R T U 1 VCCQ NC NC DQC DQC VCCQ DQC DQC VCCQ DQD DQD VCCQ DQD DQD NC NC VCCQ 1 2 NC NC NC NC DQC DQC DQC DQC VCC DQD DQD DQD DQD NC A6 NC NC 2 3 4 BA0 NC A12 CAS# BA1 VCC NC VSS VSS CE# VSS RAS# DQMC NC CKE VSS NC VCC VSS CK DQMD NC VSS WE# VSS A1 VSS NC A5 NC 3 A0 VCC A4 NC 4 5 A10 A11 A9 VSS VSS VSS DQMB VSS NC VSS DQMA VSS VSS VSS NC A3 NC 5 6 A7 NC A8 NC DQB DQB DQB DQB VCC DQA DQA DQA DQA NC A2 NC NC 6 7 VCCQ NC NC DQB DQB VCCQ DQB DQB VCCQ DQA DQA VCCQ DQA DQA NC NC VCCQ 7 A B C D E F G H J K L M N P R T U
PIN DESCRIPTION
A0 - A12 BA0-1 DQ CK CKE DQM RAS# CAS# CE# VCC VCCQ VSS Address Bus Bank Select Addresses Data Bus Clock Clock Enable Data Input/Output Mask Row Address Strobe Column Address Strobe Chip Enable Power Supply pins, 3.3V Data Bus Power Supply pins,3.3V Ground pins
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 1 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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16MX32 SDRAM BLOCK DIAGRAM
ADDR0-12 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 BA0 BA1 DQMA DQMB CE# RAS# CAS# WE# CK CKE BA0 BA1 LDQM# UDQM# CS# RAS# CAS# WE# CK CKE A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 BA0 BA1 LDQM# UDQM# CS# RAS# CAS# WE# CK CKE DQ0-7 DQ8-15
WED3DL3216V
DQA DQB
DQ0-31
DQ0-7 DQ8-15
DQC DQD
DQMC DQMD
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 2 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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INPUT/OUTPUT FUNCTIONAL DESCRIPTION
Symbol CK CKE CE# RAS#, CAS#, WE# BA0, BA1 Type Input Input Input Input Input Signal Pulse Level Pulse Pulse Level
WED3DL3216V
A0-12
Input
Level
DQ
Input/Output
Level
Polarity Function Positive Edge The system clock input. All of the SDRAM inputs are sampled on the rising edge of the clock Activates the CK signal when high and deactivates the CK signal when low. By deactivating the Active High clock, CKE low initiates the Power Down mode, Suspend mode, or the Self Refresh mode CE# disable or enable device operation by masking or enabling all inputs except CK, CKE and Active Low DQM. When sampled at the positive rising edge of the clock, CAS#, RAS# and WE# define the Active Low operation to be executed by the SDRAM - Selects which SDRAM bank is to be active. During a Bank Activate command cycle, A0-12 defines the row address (RA0-12) when sampled at the rising clock edge. During a Read or Write command cycle, A0-9 defines the column address (CA0-9) when sampled at the rising edge of the clock. In addition to the row address, A10/AP is used to invoke Autoprecharge operation at the end of the Burst Read or Write cycle. If A10/AP is high, - autoprecharge is selected and BA0, BA1 defines the bank to be precharged. If A10/AP is low, autoprecharge is disabled. During a Precharge command cycle, A10/AP is used in conjunction with BA0, BA1 to control which bank(s) to precharge. If A10/AP is high, all banks will be precharged regardless of the state of BA0, BA1. If A10/AP is low, than BA0, BA1 is used to define which bank to precharge. - Data Input/Output are multiplexed on the same pins
ABSOLUTE MAXIMUM RATINGS*
Parameter Power Supply Voltage Input Voltage Output Voltage Operating Temperature Storage Temperature Power Dissipation Short Circuit Output Current Symbol VCC/VCCQ VIN VOUT TOPR TTSG PD IOS Min -1.0 -1.0 -1.0 -0 -55 -- -- Max +4.6 +4.6 +4.6 +70 +125 1.5 50 Units V V V C C W mA
* Stress greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions greater than those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 3 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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RECOMMENDED DC OPERATING CONDITIONS
(VOLTAGE REFERENCED TO: VSS = 0V, 0C TA 70C; COMMERCIAL OR TA = -40C TO +85C; INDUSTRIAL) Parameter Supply Voltage Input High Voltage Input Low Voltage Output High Voltage (IOH = -2mA) Output Low Voltage (IOL = 2mA) Input Leakage Voltage Output Leakage Voltage Symbol VCC/VCCQ VIH VIL VOH VOL IIL IOL Min 3.0 2.0 -0.3 2.4 -- -5 -5 Typ 3.3 3.0 -- -- -- -- -- Max 3.6 VCC +0.3 0.8 -- 0.4 5 5 Unit V V V V V A A Parameter Input Capacitance Input/Output Capacitance (DQ)
WED3DL3216V
CAPACITANCE
(TA = 25C, f = 1MHZ, VCC = 3.3V) Symbol CI1 COUT Max 4 5 Unit pF pF
OPERATING CURRENT CHARACTERISTICS
(VCC = 3.3V, TA = 0C TO 70C; COMMERCIAL OR TA = -40C TO +85C; INDUSTRIAL) Parameter Operating Current (One Bank Active)1 Operating Current (Burst Mode) Precharge Standby Current in Power Down Mode
1
Symbol ICC1 ICC4 ICC2P ICC2PS ICC1N
Conditions Burst Length = 1, tRC tRC(min), IOL = 0mA Page Burst, 4 banks active, tCCD = 2 clocks CKE VIL(max), tCC = 15ns CKE, CK VIL(max), tCC = , Inputs Stable CKE = VIH, tCC = 15ns Input Change one time every 30ns CKE VIH (min), tCC = No Input Change CKE VIL (max), tCC = 15ns CKE VIL (max), tCC = CKE = VIH, tCC = 15ns Input Change one time every 30ns CKE VIH (min), tCC = , No Input Change tRC tRC (min) CKE 0.2V
-7 300 300 2 2 140 70 12 12 60 50 600 6.5
-8 280 280 2 2 140 70 12 12 60 50 570 6.5
-10 260 260 2 2 140 70 12 12 60 50 550 6.5
Units mA mA mA mA mA mA mA mA mA mA mA mA
Precharge Standby Current in Non-Power Down Mode
ICC1NS ICC3P ICC3PS ICC3N ICC3NS ICC5 ICC6
Precharge Standby Current in Power Down Mode Active Standby Current in Non-Power Down Mode (One Bank Active) Refresh Current
2
Self Refresh Current
NOTES: 1. Measured with outputs open. 2. Refresh period is 64ms.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 4 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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SDRAM AC CHARACTERISTICS
Parameter CL = 3 CL = 2 Clock to valid Output delay1,2 Output Data Hold Time2 Clock HIGH Pulse Width3 Clock LOW Pulse Width3 Input Setup Time3 Input Hold Time3 CK to Output Low-Z2 CK to Output High-Z Row Active to Row Active Delay4 RAS to CAS Delay4 Row Precharge Time4 Row Active Time4 Row Cycle Time - Operation4 Row Cycle Time - Auto Refresh4,8 Last Data in to New Column Address Delay5 Last Data in to Row Precharge5 Last Data in to Burst Stop5 Column Address to Column Address Delay6 Number of Valid OutputData7 Symbol tCC tCC tSAC tOH tCH tCL tSS tSH tSLZ tSHZ tRRD tRCD tRP tRAS tRC tRFC tCDL tRDL tBDL tCCD 133MHZ Min 7 7.5 3 2.5 2.5 1.5 0.8 2 5.4 24 24 24 60 90 90 1 1 1 1.5 2 1 20 20 20 50 70 70 1 1 1 1.5 2 1 Max 1000 1000 5.4 125MHZ Min 8 10 3 3 3 2 1 2 6 Max 1000 1000 6
WED3DL3216V
100MHZ Min 10 12 3 3 3 2 1 2 7 20 20 20 50 80 80 1 1 1 1.5 2 2 Max 1000 1000 7
Units ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns CK CK CK CK ea
10,000
10,000
10,000
NOTES: 1. Parameters depend on programmed CAS latency. 2. If clock rise time is longer than 1ns (tRISE/2 -0.5)ns should be added to the parameter. 3. Assumed input rise and fall time = 1ns. If tRISE or tFALL are longer than 1ns. [(tRISE = tFALL)/2] - 1ns should be added to the parameter. 4. The minimum number of clock cycles required is detemined by dividing the minimum time required by the clock cycle time and then rounding up to the next higher integer. 5. Minimum delay is required to complete write. 6. All devices allow every cycle column address changes. 7. In case of row precharge interrupt, auto precharge and read burst stop.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 5 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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COMMAND TRUTH TABLE
CKE Function Register Mode Register Set Refresh Auto Refresh (CBR) Entry Self Refresh Precharge Single Bank Precharge Precharge all Banks Bank Activate Write Write with Auto Precharge Read Read with Auto Precharge Burst Termination No Operation Device Deselect Clock Suspend/Standby Mode Data Write/Output Disable Data Mask/Output Disable Entry Power Down Mode Exit Previous Cycle H H H H H H H H H H H H H L H H X X Current Cycle X H L X X X X X X X X X X X X X L H CE# L L L L L L L L L L L L H X X X H H RAS# CAS# WE# L L L L L L H H H H H H X X X X X X L L L H H H L L L L H H X X X X X X L H H L L H L L L H L H X X X X X X DQM X X X X X X X X X X X X X X L H X X BA
WED3DL3216V
A0-A10
A12, A11,
Notes
X X BA X BA BA BA BA BA X X X X X X X X
OP CODE X X
X X 2 2 2 2 2 2 3
L X H X Row Address L Column H Column L Column H Column X X X X X X X X X X X X X X X X
4 5 5 6 6
NOTES: 1. All of the SDRAM operations are defined by states of CE#, WE#, RAS#, CAS#, and DQM at the positive rising edge of the clock. 2. Bank Select (BA), if BA = 0 then bank A is selected, if BA = 1 then bank B is selected. 3. During a Burst Write cycle there is a zero clock delay, for a Burst Read cycle the delay is equal to the CAS latency. 4. During normal access mode, CKE is held high and CK is enabled. When it is low, it freezes the internal clock and extends data Read and Write operations. One clock delay is required for mode entry and exit. 5. The DQM has two functions for the data DQ Read and Write operations. During a Read cycle, when DQM goes high at a clock timing the data outputs are disabled and become high impedance after a two clock delay. DQM also provides a data mask function for Write cycles. When it activates, the Write operation at the clock is prohibited (zero clock latency). All banks must be precharged before entering the Power Down Mode. The Power Down Mode does not preform any Refresh operations, therefore the device can't remain in this mode longer than the Refresh period (tREF) of the device. One clock delay is required for mode entry and exit.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 6 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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CLOCK ENABLE (CKE0) TRUTH TABLE
CKE Current State Previous Cycle H L L L L L L H L L H H H H H H H H H H H L H H L L Current Cycle X H H H H H L X H H X H H H H H L L L L H X H L H L CE# X H L L L L X X H L L H L L L L H L L L L X X X X X RAS# X X H H H L X X X X H X H L L L X H L L L X X X X X Command CAS# X X H H L X X X X X L X X H L L X X H L L X X X X X WE# X X H L X X X X X X L X X X H L X X X H L X X X X X BA0-1 X X X X X X X X X X X A10-11 Action X X X X X X X X X X
WED3DL3216V
Notes 1
Self Refresh
Power Down
INVALID Exit Self Refresh with Device Deselect Exit Self Refresh with No Operation ILLEGAL ILLEGAL ILLEGAL Maintain Self Refresh INVALID Power Down Mode exit, all banks idle ILLEGAL Maintain Power Down Mode Refer to the Idle State section of the Current State Truth Table
2
1 2 2 2 3
X X OP Code
CBR Refresh Mode Register Set Refer to the Idle State section of the Current State Truth Table
4 3 4 4
All Banks Idle
X X OP Code X X X X X X X X X X
Any State other than listed above
Entry Self Refresh Mode Register Set Power Down Refer to the Operations in the Current State Truth Table Begin Clock Suspend next cycle Exit Clock Suspend next cycle Maintain Clock Suspend
5
NOTES: 1. For the given Current State CKE must be low in the previous cycle. 2. When CKE has a low to high transition, the clock and other inputs are re-enabled asynchronously. The minimum setup time for CKE (tCKS) must be satisfied before any command other than Exit is issued. 3. The address inputs (A12-0) depend on the command that is issued. See the Idle State section of the Current State Truth Table for more information. 4. The Power Down Mode, Self Refresh Mode, and the Mode Register Set can only be entered from the all banks idle state. 5. Must be a legal command as defined in the Current State Truth Table.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 7 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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CURRENT STATE TRUTH TABLE
Command Current State CE# L L L L Idle L L L L H L L L L Row Active L L L L H L L L L Read L L L L H L L L L Write L L L L H L L L Read with Auto Precharge L L L L L H RAS# L L L L H H H H X L L L L H H H H X L L L L H H H H X L L L L H H H H X L L L L H H H H X CAS# L L H H L L H H X L L H H L L H H X L L H H L L H H X L L H H L L H H X L L H H L L H H X WE# L H L H L H L H X L H L H L H L H X L H L H L H L H X L H L H L H L H X L H L H L H L H X X X BA BA BA X X X X X BA BA BA X X X OP Code X X Row Address Column Column X X X X X BA BA BA X X X OP Code X X Row Address Column Column X X X X X BA BA BA X X X OP Code X X Row Address Column Column X X X X X BA BA BA X X X OP Code X X Row Address Column Column X X X BA0-1 A0-A12 OP Code X X Row Address Column Column X X X Action Notes Description Mode Register Set Auto or Self Refresh Precharge Bank Activate Write w/o Precharge Read w/o Precharge Burst Termination No Operation Device Deselect Mode Register Set Auto or Self Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect Mode Register Set Auto or Self Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect Mode Register Set Auto or Self Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect Mode Register Set Auto or Self Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect Set the Mode Register
WED3DL3216V
2 2,3
Start Auto orSelf Refresh No Operation Activate the specified bank and row ILLEGAL ILLEGAL No Operation No Operation No Operation or Power Down ILLEGAL ILLEGAL Precharge ILLEGAL Start Write; Determine if Auto Precharge Start Read; Determine if Auto Precharge No Operation No Operation No Operation ILLEGAL ILLEGAL Terminate Burst; Start the Precharge ILLEGAL Terminate Burst; Start the Write cycle Terminate Burst; Start a new Read cycle Terminate the Burst Continue the Burst Continue the Burst ILLEGAL ILLEGAL Terminate Burst; Start the Precharge ILLEGAL Terminate Burst; Start a new Write cycle Terminate Burst; Start the Read cycle Terminate the Burst Continue the Burst Continue the Burst ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL Continue the Burst Continue the Burst
4 2
5
6 2 7,8
4 8,9
4 8,9
4
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 8 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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CURRENT STATE TRUTH TABLE (cont.)
Command Current State CE# L L L L Write with Auto Precharge L L L L H L L L L Precharging L L L L H L L L L Row Activating L L L L H L L L L Write Recovering L L L L H L L L Write ecovering with Auto Precharge L L L L L H RAS# L L L L H H H H X L L L L H H H H X L L L L H H H H X L L L L H H H H X L L L L H H H H X CAS# L L H H L L H H X L L H H L L H H X L L H H L L H H X L L H H L L H H X L L H H L L H H X WE# L H L H L H L H X L H L H L H L H X L H L H L H L H X L H L H L H L H X L H L H L H L H X X X BA BA BA X X X X X BA BA BA X X X OP Code X X Row Address Column Column X X X X X BA BA BA X X X OP Code X X Row Address Column Column X X X X X BA BA BA X X X OP Code X X Row Address Column Column X X X X X BA BA BA X X X OP Code X X Row Address Column Column X X X BA0-1 A0-A12 OP Code X X Row Address Column Column X X X Description Mode Register Set Auto orSelf Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect Mode Register Set Auto orSelf Refresh Precharge Bank Activate Write w/o Precharge Read w/o Precharge Burst Termination No Operation Device Deselect Mode Register Set Auto orSelf Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect Mode Register Set Auto orSelf Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect Mode Register Set Auto orSelf Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL Continue the Burst Continue the Burst ILLEGAL ILLEGAL Action Notes
WED3DL3216V
4
No Operation; Bank(s) idle after tRP ILLEGAL ILLEGAL ILLEGAL No Operation; Bank(s) idle after tRP No Operation; Bank(s) idle after tRP No Operation; Bank(s) idle after tRP ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL No Operation; Row active after tRCD No Operation; Row active after tRCD No Operation; Row active after tRCD ILLEGAL ILLEGAL ILLEGAL ILLEGAL Start Write; Determine if Auto Precharge Start Read; Determine if Auto Precharge No Operation; Row active after tDPL No Operation; Row active after tDPL No Operation; Row active after tDPL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL No Operation; Precharge after tDPL No Operation; Precharge after tDPL No Operation; Precharge after tDPL 4 4,9 4 9 4 4,10 4 4
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CURRENT STATE TRUTH TABLE (cont.)
Current State Command CE# L L L L Refreshing L L L L H L L L Mode Register Accessing L L L L L H RAS# L L L L H H H H X L L L L H H H H X CAS# L L H H L L H H X L L H H L L H H X WE# L H L H L H L H X L H L H L H L H X X X BA BA BA X X X X X BA BA BA X X X BA0-1 A0-A12 OP Code X X Row Address Column Column X X X OP Code X X Row Address Column Column X X X Action Notes Description Mode Register Set Auto or Self Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect Mode Register Set Auto or Self Refresh Precharge Bank Activate Write Read Burst Termination No Operation Device Deselect ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL
WED3DL3216V
No Operation; Idle after tRC No Operation; Idle after tRC No Operation; Idle after tRC ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL No Operation; Idle after two clock cycles No Operation; Idle after two clock cycles
NOTES: 1. CKE is assumed to be active (high) in the previous cycle for all entries. The Current State is the state of the bank that the command is being applied to. 2. Both Banks must be idle otherwise it is an illegal action. 3. If CKE is active (high) the SDRAM starts the Auto (CBR) Refresh operation, if CKE is inactive (low) then the Self Refresh mode is entered. 4. The Current State refers only refers to one of the banks, if BA selects this bank then the action is illegal. If BA selects the bank not being referenced by the Current State then the action may be legal depending on the state of that bank. 5. If CKE is inactive (low) than the Power Down mode is entered, otherwise there is a No Operation. 6. The minimum and maximum Active time (tRAS) must be satisfied. 7. The RAS# to CAS# Delay (tRCD) must occur before the command is given. 8. Address A10 is used to determine if the Auto Precharge function is activated. 9. The command must satisfy any bus contention, bus turn around, and/or write recovery requirements. 10. The command is illegal if the minimum bank to bank delay time (tRRD) is not satisfied.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 10 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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MODE REGISTER DEFINITION
A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
Address Bus
WED3DL3216V
Mode Register (Mx) Reserved* WB Op Mode CAS Latency BT Burst Length
*Program M12, M11, M10 = "0, 0, 0" to ensure compatibility with future devices.
M2 M1 M0 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1
Burst Length M3 = 0 1 2 4 8 Reserved Reserved Reserved Full Page M3 = 1 1 2 4 8 Reserved Reserved Reserved Reserved
M3 0 1
Burst Type Sequential Interleaved
M6 M5 M4 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1
CAS Latency Reserved Reserved 2 3 Reserved Reserved Reserved Reserved
M8 0 -
M7 0 -
M6-M0 Defined -
Operating Mode Standard Operation All other states reserved
M9 0 1
Write Burst Mode Programmed Burst Length Single Location Access
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 11 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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WED3DL3216V
SINGLE BIT READ-WRITE CYCLE (SAME PAGE) @CAS LATENCY=3, BURST LENGTH=1
0 CLOCK tCC CKE tCH tCL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
HIGH
tRCD tRAS
CE# tRCD tSS RAS# tSS CAS# tSS ADDR Ra tSH Ca tSS Cb tSH Cc Rb tSH tCCD tSH tSS tSH
tRP
Note 2
Note 2,3
Note 2,3
Note 2,3
Note 4
Note 2
BA
BS
BS
BS
BS
BS
BS
A10/AP
Ra
Note 3
Note 3
Note 3
Note 4
Rb
tRAC tSAC DQ tSLZ Qa
tSS Db
tSH Qc
tOH
tSS
tSH
WE#
tSS DQM
tSH
Row Active
Read
Write
Read Precharge
Row Active
DONT' CARE
NOTES: 1. All input except CKE & DQM can be don't care when CE is high at the CK high going edge. 2. Bank active & read/write are controlled by BA0~BA1.
BA0 0 0 1 1 BA1 0 1 0 1 Active & Read/Write Bank A Bank B Bank C Bank D
3.
Enable and disable auto precharge function are controlled by A10/AP in read/write command.
A10/AP BA0 0 0 0 1 1 0 1 0 1 1 BA1 0 1 0 1 0 1 0 1 Operation Disable auto precharge, leave bank A active at end of burst. Disable auto precharge, leave bank B active at end of burst. Disable auto precharge, leave bank C active at end of burst. Disable auto precharge, leave bank D active at end of burst. Enable auto precharge, precharge bank A at end of burst. Enable auto precharge, precharge bank B at end of burst. Enable auto precharge, precharge bank C at end of burst. Enable auto precharge, precharge bank D at end of burst.
4.
A10/AP and BA0~BA1 control bank precharge when precharge command is asserted.
A10/AP 0 0 0 0 1 BA0 0 0 1 1 x BA1 0 1 0 1 x Precharge Bank A Bank B Bank C Bank D All Banks
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 12 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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POWER UP SEQUENCE
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
WED3DL3216V
16
17
18
19
CKE
High level is necessary
CE#
tRP
RAS#
tRFC
tRFC
CAS#
ADDR
Key
RAa
BA
A10/AP
RAa
DQ
HIGH-Z
WE#
DQM
High level is necessary
Precharge (All Banks)
Auto Refresh
Auto Refresh
Mode Register Set Row Active (A-Bank)
DON'T CARE
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 13 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
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WED3DL3216V
READ & WRITE CYCLE AT SAME BANK @ BURST LENGTH = 4
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
Note 1
HIGH tRC
CE# tRCD
RAS#
Note 2
CAS#
ADDR
Ra
Ca0
Rb
Cb0
BA
A10/AP
Ra tRAC
Note 3
Rb tSHZ Note 4 tSAC Qa0 tRAC
Note 3
tOH Qa1 Qa2 Qa3 tSHZ Note 4 tSAC Qa0 tOH Qa1 Qa2 Qa3 Db0 Db1 Db2 Db3 Db0 Db1 Db2 Db3
tRDL
CL = 2 DQ CL = 3
tRDL
WE# Precharge (All Banks) DQM
Row Active (A-Bank)
Read (A-bank)
Precharge (A-Bank)
Row Active (A-Bank)
Write (A-bank)
Precharge (A-Bank)
DON'T CARE
NOTES: 1. Minimum row cycle times are required to complete internal DRAM operation. 2. Row precharge can interrupt burst on any cycle. (CAS# Latency - 1) number of valid output data is available after Row precharge. Last valid output will be Hi-Z(tSHZ) after the clock. 3. Access time from Row active command. tCC *(tRCD + CAS# latency - 1) + tSAC. 4. Output will be Hi-Z after the end of burst (1, 2, 4, 8 & full page bit burst).
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WED3DL3216V
PAGE READ & WRITE CYCLE AT SAME BANK @ BURST LENGTH = 4
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
HIGH
CE# tRCD
RAS#
Note 2
CAS#
ADDR
Ra
Ca0
Cb0
Rb
Cb0
BA
A10/AP
Ra tRDL
CL = 2 DQ CL = 3
Qa0
Qa1
Qb0
Qb1
Qb2
Dc0
Dc1 tCDL
Dd0
Dd1
Qa0
Qa1
Qb0
Qb1
Dc0
Dc1
Dd0
Dd1
WE# Precharge (All Banks)
Note 1 Note 3
DQM
Row Active (A-Bank)
Read (A-Bank)
Read (A-Bank)
Write (A-Bank)
Write (A-Bank)
Precharge (A-Bank)
DON'T CARE
NOTES: 1. To write data before burst read ends, DQM should be asserted three cycles prior to write command to avoid bus contention. 2. Row precharge will interrupt writing. Last data input, tRDL before Row precharge, will be written. 3. DQM should mask invalid input data on precharge command cycle when asserting precharge before end of burst. Input data after Row precharge cycle will be masked internally.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 15 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
PAGE READ CYCLE AT DIFFERENT BANK @ BURST LENGTH = 4
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
Note 1
HIGH
CE#
RAS#
Note 2
CAS#
ADDR
RAa
CAa
RBb
CBb
CAc
CBd
CAe
BA
A10/AP
RAa
RBb
CL = 2 DQ CL = 3
QAa0 QAa1
QAa2
QAa3 QBb0 QBb1 QBb2
QBb3
QAc0
QAc1
QBd0 QBd1 QAe0
QAe1
QAa0
QAa1
QAa2
QAa3 QBb0
QBb1 QBb2
QBb3
QAc0
QAc1
QBd0 QBd1 QAe0
QAe1
WE# Precharge (All Banks) DQM
Row Active (A-Bank)
Row Active (B-Bank) Read (A-bank)
Read (B-bank)
Read (A-bank)
Read (B-bank)
Read (A-bank)
Precharge (A-Bank)
DON'T CARE
NOTES: 1. CE# can be don't cared when RAS#, CAS# and WE# are high at the clock high going edge. 2. To interrupt a burst read by row precharge, both the read and the precharge banks must be the same.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 16 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
PAGE WRITE CYCLE AT DIFFERENT BANK @ BURST LENGTH = 4
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
HIGH
CE#
RAS#
Note 2
CAS#
ADDR
RAa
CAa
RBb
CBb
CAc
CBd
BA
A10/AP
RAa
RBb tCDL tRDL DBb1 DBb2 DBb3 DAc0 DAc1 DBd0 DBd1
DQ
DAa0
DAa1
DAa2
DAa3
DBb0
WE#
Note 1
DQM Precharge (All Banks) Row Active (A-Bank) Row Active (B-Bank) Write (A-Bank) Write (B-Bank) Write (A-Bank) Write (B-Bank) Precharge (Both Banks)
DON'T CARE
NOTES: 1. To interrupt burst write by Row precharge, DQM should be asserted to mask invalid input data. 2. To interrupt burst write by Row precharge, both the write and the precharge banks must be the same.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 17 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
READ & WRITE CYCLE AT DIFFERENT BANK @ BURST LENGTH = 4
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
HIGH
CE#
RAS#
CAS#
ADDR
RAa
CAa
RBb
CBb
RAc
CAc
BA
A10/AP
RAa
RBb
RAc tCDL
Note 1
CL = 2 DQ CL = 3
QAa0
QAa1
QAa2
QAa3
DBb0
DBb1
DBb2
DBb3
QAc0
QAc1
QAc2
QAa0
QAa1 QAa2
QAa3
DBb0
DBb1
DBb2
DBb3
QAc0
QAc1
WE# Precharge (All Banks) DQM
Row Active (A-Bank)
Read (A-Bank)
Precharge (A-Bank) Row Active (B-Bank)
Write (B-Bank) Row Active (A-Bank)
Read (A-Bank)
DON'T CARE
NOTE: 1. tCDL should be met to complete write.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 18 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
READ & WRITE CYCLE WITH AUTO PRECHARGE @ BURST LENGTH = 4
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
HIGH
CE#
RAS#
CAS#
ADDR
Ra
Rb
Ca
Cb
BA
A10/AP
Ra
Rb
CL = 2 DQ CL = 3
Qa0
Qa1
Qa2
Qa3
Db0
Db1
Db2
Db3
Qa0
Qa1
Qa2
Qa3
Db0
Db1
Db2
Db3
WE#
DQM
Row Active (A-Bank)
Read with Auto Precharge (A-Bank) Row Active (B-Bank)
Auto Precharge Start Point (A-Bank)
Write with Auto Precharge (B-Bank)
Auto Precharge Start Point (B-Bank)
DON'T CARE
NOTE: 1. tCDL should be controlled to meet minimum tRAS before internal precharge start. (in the case of Burst Length = 1 & 2 and BRSW mode)
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 19 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
CLOCK SUSPENSION & DQM OPERATION CYCLE @ CAS LATENCY = 2, BURST LENGTH = 4
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
HIGH
CE#
RAS#
CAS#
ADDR
Ra
Ca
Cb
Cc
BA
A10/AP
Ra tSHZ tSHZ Qb1 Qb1 Dc0 Dc2
DQ
Qa0
Qa1
Qa2
Qa3
WE#
Note 1
DQM
Row Active
Read
Clock Suspension
Read
Read DQM Write
Write DQM Clock Suspension
Write DQM
DON'T CARE
NOTE: 1. DQM is needed to prevent bus contention.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 20 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
READ INTERRUPTED BY PRECHARGE COMMAND & READ BURST STOP @ BURST LENGTH = FULL PAGE
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
HIGH
CE#
RAS#
CAS#
ADDR
RAa
CAa
CAb
BA
A10/AP
RAa
Note 2
1
1
CL = 2 DQ
QAa0 QAa1
QAa2
QAa3 QAa4
QAb0
QAb1 QAb2
QAb3
QAb4 QAb5
2
2
CL = 3
QAa0 QAa1
QAa2 QAa3 QAa4
QAb0 QAb1 QAb2
QAb3
QAb4 QAb5
WE#
DQM
Row Active (A-Bank)
Read (A-Bank)
Burst Stop
Read (A-Bank)
Precharge (A-Bank)
DON'T CARE
NOTES: 1. At full page mode, burst is end at the end of burst. So auto precharge is possible. 2. About the valid DQs after burst stop, it is same as the case of RAS# interrupt. Both cases are illustrated in above timing diagram. See the label 1, 2. But at burst write, Burst stop and RAS# interrupt should be compared carefully. Refer to the timing diagram of "Full page write burst stop cycle." 3. Burst stop is valid at every burst length.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 21 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
WRITE INTERRUPTED BY PRECHARGE COMMAND & WRITE BURST STOP CYCLE @ BURST LENGTH = FULL PAGE
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CKE
HIGH
CE#
RAS#
CAS#
ADDR
RAa
CAa
CAb
BA
A10/AP
RAa tBDL tRDL
Note 2
DQ
DAa0 DAa1
DAa2 DAa3
DAa4
DAb0
DAb1
DAb2
DAb3
DAb4
DAb5
WE#
DQM
Row Active (A-Bank)
Write (A-Bank)
Burst Stop
Write (A-Bank)
Precharge (A-Bank)
DON'T CARE
NOTES: 1. At full page mode, burst is end at the end of burst. So auto precharge is possible. 2. Data-in at the cycle of interrupted by precharge cannot be written into the corresponding memory cell. It is defined by AC parameter of tRDL. DQM at write interrupted by precharge command is needed to prevent invalid write. DQM should mask invalid input data on precharge command cycle when asserting precharge before end of burst. Input data after Row precharge cycle will be masked internally. 3. Burst stop is valid at every burst length.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 22 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
BURST READ SINGLE BIT WRITE CYCLE @ BURST LENGTH = 2 @ BURST LENGTH = FULL PAGE
0 CLOCK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Note 1
CKE
HIGH
CE#
RAS#
Note 2
CAS#
ADDR
RAa
CAa
RBb
CAb
RAc
CBc
CAd
BA
A10/AP
RAa
RBb
RAc
CL = 2 DQ CL = 3
DAa0
QAb0
QAb1
DBc0
QAd0
QAd1
DAa0
QAb0
QAb1
DBc0
QAd0
QAd1
WE#
Note 1 Note 3
DQM
Row Active (A-Bank)
Row Active (B-Bank) Write (A-Bank) Read with Auto Precharge (A-Bank)
Row Active (A-Bank) Write with Auto Precharge (A-Bank)
Read (A-Bank)
Precharge (Both Banks)
DON'T CARE
NOTES: 1. BRSW mode is enabled by setting As "High" at MRS (Mode Register Set). At the BRSW Mode, the burst length at write is fixed to "1" regardless of programmed burst length. 2. When BRSW write command with auto precharge is executed, keep it in mind that tRAS should not be violated. Auto precharge is executed at the burst-end cycle, so in the case of BRSW write command, the next cycle starts the precharge.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 23 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
WED3DL3216V
ACTIVE/PRECHARGE POWER DOWN MODE @ CAS LATENCY = 2, BURST LENGTH = 4
0 CLOCK
Note 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
tSS CKE
Note 1 Note 3
tSS
tSS
CE#
RAS#
CAS#
ADDR
Ra
Ca
BA
A10/AP
Ra
tSHZ DQ Qa0 Qa1 Qa2
WE#
DQM
Note 1 Note 3
Precharge Power-Down Entry
Row Active Precharge Power-Down Exit Active Power-Down Entry
Read Active Power-Down Exit
Precharge
DON'T CARE
NOTES: 1. Both banks should be in idle state prior to entering precharge power down mode. 2. CKE should be set high at least 1 CK + tSS prior to Row active command. 3. Cannot violate minimum refresh specification (64ms).
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 24 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
SELF REFRESH ENTRY & EXIT CYCLE
0 CLOCK tSS CKE
Note 1 Note 2 Note 3 Note 4
WED3DL3216V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
tRFC min
Note 6
CE#
Note 5
RAS#
Note 7
CAS#
ADDR
BA
A10/AP
DQ
HI-Z
HI-Z
WE#
DQM
Self Refresh Entry
Self Refresh Exit
Auto Refresh
DON'T CARE
NOTES: TO ENTER SELF REFRESH MODE 1. CE#, RAS# & CAS# with CKE should be low at the same clock cycle. 2. After 1 clock cycle, all the inputs including the system clock can be don't care except for CKE. 3. The device remains in self refresh mode as long as CKE stays "Low." Once the device enters self refresh mode, minimum tRAS is required before exit from self refresh. TO EXIT SELF REFRESH MODE 4. System clock restart and be stable before returning CKE high. 5. CE# starts from high. 6. Minimum tRFC is required after CKE going high to complete self refresh exit. 7. 4K cycle of burst auto refresh is required before self refresh entry and after self refresh exit if the system uses burst refresh.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 25 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
MODE REGISTER SET CYCLE
0 CLOCK 1 2 3 4 5 6 0 1 2
WED3DL3216V
AUTO REFRESH CYCLE
3 4 5 6 7 8 9 10
CKE
HIGH
HIGH
CE#
Note 2
tRFC
RAS#
Note 1
CAS#
Note 3
ADDR
Key
Ra
DQ
HI-Z
HI-Z
WE#
DQM
MRS
New Command
Auto Refresh
New Command
DON'T CARE
NOTES: Both banks precharge should be completed before Mode Register Set cycle and auto refresh cycle. MODE REGISTER SET CYCLE 1. CE#, RAS#, CAS#, & WE# activation at the same clock cycle with address key will set internal mode register. 2. Minimum 2 clock cycles should be met before new RAS# activation. 3. Please refer to Mode Register Set table.
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 26 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com
White Electronic Designs
PACKAGE DESCRIPTION 119 PIN BGA JEDEC MO-163
7.62 (0.300) TYP A B C D E F G 20.32 (0.800) TYP H J K L M N P R T U 0.711 (0.028) MAX 1.27 (0.050) TYP A1 Corner 2.79 (0.110) MAX R 1.52 (0.060) MAX (4x)
WED3DL3216V
17.00 (0.669) TYP
23.00 (0.905) TYP
1.27 (0.050) TYP
ALL DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES
ORDERING INFORMATION
Part Number WED3DL3216V7BC WED3DL3216V8BC WED3DL3216V10BC WED3DL3216V7BI WED3DL3216V8BI WED3DL3216V10BI WED3DL3216V7ES WED3DL3216V10ES Clock Frequency 133MHz 125MHz 100MHz 133MHz, Industrial 125MHz, Industrial 100MHz, Industrial 133MHz, Engineering Samples 100 MHz, Engineering Samples Package 119 BGA 119 BGA 119 BGA 119 BGA 119 BGA 119 BGA 119 BGA 119 BGA
White Electronic Designs Corp. reserves the right to change products or specifications without notice. January, 2004 Rev. 0 27 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com

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