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92A
CY7C291A
2K x 8 Reprogrammable PROM
Features
* Windowed for reprogrammability * CMOS for optimum speed/power * High speed -- 20 ns (Commercial) -- 35 ns (Military) * Low power -- 660 mW (Commercial and Military) * Low standby power -- 220 mW (Commercial and Military) * EPROM technology 100% programmable * Slim 300-mil or standard 600-mil packaging available * 5V 10% VCC, commercial and military * TTL-compatible I/O * Direct replacement for bipolar PROMs * Capable of withstanding >2001V static discharge
Functional Description
The CY7C291A is a high-performance 2K-word by 8-bit CMOS PROM. It is packaged in a 300-mil ceramic package which may be equipped with an erasure window; when exposed to UV light the PROM is erased and can then be reprogrammed. The memory cells utilize proven EPROM floating-gate technology and byte-wide intelligent programming algorithms. The CY7C291A is a plug-in replacement for bipolar devices and offers the advantage of lower power, reprogrammability, superior performance and programming yield. The EPROM cell requires only 12.5V for the supervoltage and low current requirements allow for gang programming. The EPROM cells allow for each memory location to be tested 100%, as each location is written into, erased, and repeatedly exercised prior to encapsulation. Each PROM is also tested for AC performance to guarantee that after customer programming the product will meet DC and AC specification limits. A read is accomplished by placing an active LOW signal on CS1, and active HIGH signals on CS2 and CS3. The contents of the memory location addressed by the address line (A0-A10) will become available on the output lines (O0-O7).
Logic Block Diagram
A0 A1 A2 A3 A4 A5 A6 A7 O3 A8 A9 A10 COLUMN ADDRESS POWER DOWN 7C293A O2 O1 ADDRESS DECODER O4 ROW ADDRESS PROGRAMMABLE ARRAY MULTIPLEXER O6 O7
Pin Configurations
DIP Top View
A7 A6 O5 A5 A4 A3 A2 A1 A0 O0 O1 O2 GND 1 24 2 23 3 7C291A 22 4 21 5 20 6 19 18 7 8 17 9 16 10 15 11 14 12 13 VCC A8 A9 A10 CS1 CS2 CS3 O7 O6 O5 O4 O3
LCC/PLCC (Opaque Only) Top View
A5 A6 A7 NC V CC A8 A9 A4 A3 A2 A1 A0 NC O0 4 3 2 1 28 27 26 25 5 24 6 7C291A 23 7 22 8 21 9 20 10 19 11 12 1314151617 18 O1 O2 GND NC O3 O4 O5 A10 CS1 CS2 CS3 NC O7 O6
O0 CS1 CS2 CS3
Window available
Cypress Semiconductor Corporation Document #: 38-04011 Rev. *A
*
3901 North First Street
*
San Jose
*
CA 95134 * 408-943-2600 Revised October 8, 2002
CY7C291A
Selection Guide
7C291A-20 Maximum Access Time Maximum Operating Current Standard Commercial Military L Commercial 20 120 7C291A-25 25 90 7C291A-35 7C291AL-35 35 90 90 60 7C291A-50 50 90 Unit ns mA mA mA
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ......................................-65C to+150C Ambient Temperature with Power Applied................................................... -55C to+125C Supply Voltage to Ground Potential ..................-0.5V to+7.0V DC Voltage Applied to Outputs in High Z State ......................................................-0.5V to+7.0V DC Input Voltage .................................................-3.0V to +7.0V DC Program Voltage .....................................................13.0V UV Exposure.................................................7258 Wsec/cm2
Static Discharge Voltage............................................ >2001V (per MIL-STD-883, Method 3015) Latch-Up Current..................................................... >200 mA
Operating Range
Range Commercial Military[1] Ambient Temperature 0C to + 70C -55C to + 125C VCC 5V 10% 5V 10%
Notes: 1. TA is the "instant on" case temperature.
Document #: 38-04011 Rev. *A
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CY7C291A
Electrical Characteristics Over the Operating Range[2,3]
7C291A-20 Parameter VOH VOL VIH VIL IIX VCD IOZ IOS ICC ISB VPP IPP VIHP VILP Description Output HIGH Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage Input Load Current Input Diode Clamp Voltage Output Leakage Current Output Short Circuit Current[4] VCC Operating Supply Current Standby Supply Current (7C293A Only) Programming Supply Voltage Programming Supply Current Input HIGH Programming Voltage Input LOW Programming Voltage 3.0 0.4 GND < VOUT < VCC, Output Disabled VCC = Max., VOUT = GND VCC = Max., IOUT = 0 mA VCC = Max., CS1 = VIH Com'l Com'l 12 -10 -20 +10 -90 120 40 13 50 3.0 0.4 12 Test Conditions VCC = Min., IOH = -4.0 mA VCC = Min., IOL = 16.0 mA Guaranteed Input Logical HIGH Voltage for All Inputs Guaranteed Input Logical LOW Voltage for All Inputs GND < VIN < VCC -10 2.0 Min. 2.4 0.4 VCC 0.8 +10 -10 Note 3 -10 -20 +10 -90 90 30 13 50 A mA mA mA V mA V V 2.0 Max. 7C291A-25 Min. 2.4 0.4 VCC 0.8 +10 Max. Unit V V V V A
Notes: 2. See the last page of this specification for Group A subgroup testing information. 3. See the "Introduction to CMOS PROMs" section of the Cypress Data Book for general information on testing. 4. For test purposes, not more than one output at a time should be shorted. Short circuit test duration should not exceed 30 seconds.
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CY7C291A
Electrical Characteristics Over the Operating Range[2,3] (continued)
7C291AL-35 Parameter VOH VOL VIH VIL IIX VCD IOZ IOS ICC Description Output HIGH Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage Input Load Current Input Diode Clamp Voltage Output Leakage Current Output Short Circuit Current[4] VCC Operating Supply Current GND < VOUT < VCC, Output Disabled VCC = Max., VOUT = GND VCC = Max., VIN = 2.0V IOUT = 0 mA VCC = Max., CS1 = VIH Commercial Military Commercial Military 12 13 50 3.0 0.4 3.0 0.4 12 30 -10 -20 Test Conditions VCC = Min., IOH = -4.0 mA VCC = Min., IOL = 16.0 mA Guaranteed Input Logical HIGH Voltage for All Inputs Guaranteed Input Logical LOW Voltage for All Inputs GND < VIN < VCC -10 2.0 0.8 +10 Note 3 +10 -90 60 -10 -20 +10 -90 90 90 30 40 13 50 V mA V V mA A mA mA -10 Min. 2.4 0.4 2.0 0.8 +10 Max. 7C291A-35 7C291A-50 Min. 2.4 0.4 Max. Unit V V V V A
ISB
Standby Supply Current (7C293A Only) Programming Supply Voltage Programming Supply Current Input HIGH Programming Voltage Input LOW Programming Voltage
VPP IPP VIHP VILP
Capacitance[3]
Parameter CIN COUT Description Input Capacitance Output Capacitance Test Conditions TA = 25C, f = 1 MHz, VCC = 5.0V Max. 10 10 Unit pF pF
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CY7C291A
AC Test Loads and Waveforms[3]
5V OUTPUT 30pF INCLUDING JIG AND SCOPE R2 167 R1250 5V OUTPUT 5 pF INCLUDING JIG AND SCOPE R2 167 R1250 3.0V GND < 5 ns ALL INPUT PULSES 90% 10% 90% 10% < 5 ns
(a) Normal Load
Equivalent to: THE VENIN EQUIVALENT 100 OUTPUT
(b) High Z Load
2.0V tPU 50% 50%
VCC SUPPLY CURRENT A0 - A10 ADDRESS CS2 - CS3 CS1 tAA O0 - O7
tPD
tHZCS
tACS
Switching Characteristics Over the Operating Range[2, 3]
7C291A-20 Parameter tAA tHZCS1 tACS1 tHZCS2 tACS2 tPU tPD Description Address to Output Valid Chip Select Inactive to High Z Chip Select Active to Output Valid Chip Select Inactive to High Z Chip Select Active to Output Valid Chip Select Active to Power-Up Chip Select Inactive to Power-Down 0 22 Min. Max. 20 15 15 22 22 0 27 7C291A-25 Min. Max. 25 15 15 27 27 0 35 7C291A-35 7C291AL-35 Min. Max. 35 20 20 35 35 0 45 7C291A-50 Min. Max. 50 20 20 45 45 Unit ns ns ns ns ns ns ns
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CY7C291A
Erasure Characteristics
Wavelengths of light less than 4000 Angstroms begin to erase these PROMs. For this reason, an opaque label should be placed over the window if the PROM is exposed to sunlight or fluorescent lighting for extended periods of time. The recommended dose of ultraviolet light for erasure is a wavelength of 2537 Angstroms for a minimum dose (UV intensity x exposure time) of 25 Wsec/cm2. For an ultraviolet lamp with a 12 mW/cm2 power rating, the exposure time would be approximately 35 minutes. These PROMs need to be within 1 inch of the lamp during erasure. Permanent damage may result if the PROM is exposed to high-intensity UV light for an extended period of time. 7258 Wsec/cm2 is the recommended maximum dosage.
Programming Information
Programming support is available from Cypress as well as from a number of third-party software vendors. For detailed programming information, including a listing of software packages, please see the PROM Programming Information located at the end of this section. Programming algorithms can be obtained from any Cypress representative.
Table 1. Mode Selection Pin Function[5] Read or Output Disable Mode Read Output Disable Output Disable Output Disable Program Program Verify Program Inhibit Intelligent Program Blank Check Zeros
[6]
A10-A0 A10-A0 A10-A0 A10-A0 A10-A0 A10-A0 A10-A0 A10-A0 A10-A0 A10-A0 A10-A0
CS3 PGM VIH X X VIL VILP VIHP VIHP VILP VIHP
CS2 VFY VIH X VIL X VIHP VILP VIHP VIHP VILP
CS1 VPP VIL VIH X X VPP VPP VPP VPP VPP
O7-O0 D7-D0 O7-O0 High Z High Z High Z D7-D0 O7-O0 High Z D7-D0 Zeros
Other
Notes: 5. X = "don't care" but not to exceed VCC +5%. 6. The power-down mode for the CY7C293A is activated by deselecting CS1.
DIP Top View
A7 A6 A5 A4 A3 A2 A1 A0 D0 D1 D2 GND 1 24 VCC A8 A9 A10 VPP VFY PGM D7 D6 D5 D4 D3 A4 A3 A2 A1 A0 NC D0 5 6 7 8 9 10 11
LCC/PLCC (Opaque Only) Top View
A5 A6 A7 NC V CC A8 A9 4 3 2 1 28 27 26 25 24 7C291A 23 22 21 20 19 1314151617 18 12 A10 VPP VFY PGM NC D7 D6 D1 D2 GND NC D3 D4 D5
23 2 22 3 7C291A 21 4 20 5 19 6 7 8 9 10 11 12 18 17 16 15 14 13
Figure 1. Programming Pinouts
Document #: 38-04011 Rev. *A
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CY7C291A
Typical DC and AC Characteristics
NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE 1.6
CC
NORMALIZED SUPPLY CURRENT vs. AMBIENT TEMPERATURE 1.2 NORMALIZED ACCESS TIME NORMALIZED I CC 1.2
NORMALIZED ACCESS TIME vs. SUPPLY VOLTAGE
1.4 1.2 1.0 0.8 0.6 4.0 TA =25C f = fMAX 4.5 5.0 5.5 6.0
NORMALIZED I
1.1
1.0
1.0
0.8
0.9
0.6 TA =25C 0.4 4.0 4.5 5.0 5.5 6.0
0.8 -55
25
125
SUPPLY VOLTAGE (V)
AMBIENT TEMPERATURE (C)
SUPPLY VOLTAGE (V)
OUTPUT SOURCE CURRENT (mA)
NORMALIZED ACCESS TIME vs. TEMPERATURE NORMALIZED ACCESS TIME 1.6 1.4 1.2 1.0 0.8 0.6 -55 25 125
OUTPUT SOURCE CURRENT vs. VOLTAGE 60 50 40 30 20 10 0 0 1.0 2.0 3.0 4.0 DELTA t AA (ns) 30.0 25.0 20.0 15.0 10.0 5.0 0.0
TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING
VCC =4.5V TA =25C 0 200 400 600 800 1000
AMBIENT TEMPERATURE (C)
OUTPUT VOLTAGE (V)
CAPACITANCE (pF)
OUTPUT SINK CURRENT (mA)
OUTPUT SINK CURRENT vs. OUTPUT VOLTAGE 175 150 NORMALIZED I CC 125 100 75 50 25 0 0.0 1.0 2.0 3.0 4.0 VCC =5.0V TA =25C 1.02 1.00 0.98 0.96 0.94 0.92 0.90 0.88
I CC vs. CYCLE PERIOD
VCC =5.5V TA =25C
0
25
50
75
100
OUTPUT VOLTAGE (V)
CYCLE PERIOD (ns)
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CY7C291A
Ordering Information
Speed (ns) 20 ICC (mA) 120 Ordering Code CY7C291A-20JC CY7C291A-20PC 25 90 CY7C291A-25JC CY7C291A-25PC CY7C291A-25SC CY7C291A-25WC 35 60 CY7C291AL-35JC CY7C291AL-35PC CY7C291AL-35WC 90 CY7C291A-35JC CY7C291A-35PC CY7C291A-35WC 120 CY7C291A-35DMB CY7C291A-35QMB 50 90 CY7C291A-50PC CY7C291A-50WMB Package Name J64 P13 J64 P13 S13 W14 J64 P13 W14 J64 P13 W14 D14 Q64 P13 W14 Package Type 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead Molded SOIC 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Pin Windowed Leadless Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP Commercial Military Military Commercial Commercial Commercial Operating Range Commercial
Document #: 38-04011 Rev. *A
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CY7C291A
MILITARY SPECIFICATIONS Group A Subgroup Testing DC Characteristics
Parameter VOH VOL VIH VIL IIX IOZ ICC ISB Subgroups 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 SMD Number 5962-87650 5962-87650 5962-88734 5962-88734 5962-88734 5962-88734 Suffix 01LX 03LX 023X 033X 04LX 043X Cypress Number CY7C291-50WMB CY7C291-35WMB CY7C291A-35LMB CY7C291A-35LMB CY7C291A-25DMB CY7C291A-25LMB
Switching Characteristics
Parameter tAA tACS1 Subgroups 7, 8, 9, 10, 11 7, 8, 9, 10, 11
SMD Cross Reference
Package Diagrams
24-Lead (300-Mil) CerDIP D14
MIL-STD-1835 D- 9 Config.A
51-80031-**
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CY7C291A
Package Diagrams (continued)
24-Lead (300-Mil) Molded DIP P13/P13A
51-85013-*A
28-Pin Windowed Leadless Chip Carrier Q64
MIL-STD-1835 C-4
51-80102-**
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CY7C291A
Package Diagrams (continued)
24-Lead (300-Mil) Molded SOIC S13
51-85025-*A
24-Lead (300-Mil) Windowed CerDIP W14
MIL-STD-1835 D-9 Config. A
51-80086-**
All product and company names mentioned in this document may be the trademarks of their respective holders.
Document #: 38-04011 Rev. *A
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(c) Cypress Semiconductor Corporation, 2002. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
CY7C291A
Document History Page
Document Title: CY7C291A 2K x 8 Reprogrammable PROM Document Number: 38-04011 REV. ** *A ECN NO. 114138 118905 Issue Date 03/18/02 10/11/02 Orig. of Change DSG GBI Description of Change Change from Spec number: 38-00075 to 38-04011 Update ordering information
Document #: 38-04011 Rev. *A
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