92A CY7C291A 2K x 8 Reprogrammable PROM Features Functional Description • Windowed for reprogrammability • CMOS for optimum speed/power • High speed — 20 ns (Commercial) • • • • • • 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 Pin Configurations A0 DIP Top View O7 A1 A2 A3 ROW ADDRESS PROGRAMMABLE ARRAY MULTIPLEXER O6 A7 A6 A4 A5 A4 A3 O5 A5 A6 ADDRESS DECODER O4 A2 A1 A0 A7 O3 A8 A9 A10 O0 COLUMN ADDRESS O1 O2 POWER DOWN 7C293A O2 GND LCC/PLCC (Opaque Only) Top View VCC A8 A9 A10 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 CS1 CS2 CS3 O7 O6 O5 O4 O3 A5 A6 A7 NC VCC A8 A9 • 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. 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 A10 CS1 CS2 CS3 NC O7 O6 O1 O2 GND NC O3 O4 O5 • — 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 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. O1 Window available O0 CS1 CS2 CS3 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 Maximum Access Time Maximum Operating Current Standard L Commercial 7C291A-20 7C291A-25 7C291A-35 7C291AL-35 7C291A-50 Unit 20 25 35 50 ns 120 90 90 90 mA Military 90 mA Commercial 60 mA Maximum Ratings Static Discharge Voltage............................................ >2001V (per MIL-STD-883, Method 3015) (Above which the useful life may be impaired. For user guidelines, not tested.) Latch-Up Current..................................................... >200 mA Storage Temperature ......................................−65°C to+150°C Operating Range Ambient Temperature with Power Applied................................................... −55°C to+125°C 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 Range Ambient Temperature VCC Commercial 0°C to + 70°C 5V ±10% −55°C to + 125°C 5V ±10% Military[1] Notes: 1. TA is the “instant on” case temperature. UV Exposure.................................................7258 Wsec/cm2 Document #: 38-04011 Rev. *A Page 2 of 12 CY7C291A Electrical Characteristics Over the Operating Range[2,3] 7C291A-20 Parameter Description Test Conditions Min. Max. VOH Output HIGH Voltage VCC = Min., IOH = −4.0 mA VOL Output LOW Voltage VCC = Min., IOL = 16.0 mA VIH Input HIGH Voltage Guaranteed Input Logical HIGH Voltage for All Inputs VIL Input LOW Voltage Guaranteed Input Logical LOW Voltage for All Inputs IIX Input Load Current GND < VIN < VCC VCD Input Diode Clamp Voltage IOZ Output Leakage Current GND < VOUT < VCC, Output Disabled −10 +10 IOS Output Short Circuit Current[4] VCC = Max., VOUT = GND −20 −90 ICC VCC Operating Supply Current VCC = Max., IOUT = 0 mA Com’l ISB Standby Supply Current (7C293A Only) VCC = Max., CS1 = VIH Com’l VPP Programming Supply Voltage IPP Programming Supply Current VIHP Input HIGH Programming Voltage VILP Input LOW Programming Voltage 2.4 7C291A-25 Min. 2.4 0.4 2.0 Unit V 0.4 V VCC V 0.8 V +10 µA −10 +10 µA −20 −90 mA 120 90 mA 40 30 mA 13 V 50 mA VCC 2.0 0.8 −10 Max. +10 −10 Note 3 12 13 12 50 3.0 3.0 0.4 V 0.4 V 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. Document #: 38-04011 Rev. *A Page 3 of 12 CY7C291A Electrical Characteristics Over the Operating Range[2,3] (continued) 7C291A-35 7C291A-50 7C291AL-35 Parameter Description Test Conditions Min. VOH Output HIGH Voltage VCC = Min., IOH = −4.0 mA VOL Output LOW Voltage VCC = Min., IOL = 16.0 mA VIH Input HIGH Voltage Guaranteed Input Logical HIGH Voltage for All Inputs VIL Input LOW Voltage Guaranteed Input Logical LOW Voltage for All Inputs IIX Input Load Current GND < VIN < VCC VCD Input Diode Clamp Voltage IOZ Output Leakage Current GND < VOUT < VCC, Output Disabled −10 IOS Output Short Circuit Current[4] VCC = Max., VOUT = GND −20 ICC VCC Operating Supply Current VCC = Max., VIN = 2.0V IOUT = 0 mA Commercial VCC = Max., CS1 = VIH Commercial ISB Standby Supply Current (7C293A Only) VPP Programming Supply Voltage IPP Programming Supply Current VIHP Input HIGH Programming Voltage VILP Input LOW Programming Voltage Max. Min. 2.4 Unit 2.4 0.4 V 0.4 2.0 V 2.0 0.8 −10 Max. V 0.8 V −10 +10 µA +10 −10 +10 µA −90 −20 −90 mA 90 mA +10 Note 3 60 Military 90 30 30 Military mA 40 12 13 12 50 3.0 13 V 50 mA 3.0 0.4 V 0.4 V Capacitance[3] Parameter Description CIN Input Capacitance COUT Output Capacitance Document #: 38-04011 Rev. *A Test Conditions TA = 25°C, f = 1 MHz, VCC = 5.0V Max. Unit 10 pF 10 pF Page 4 of 12 CY7C291A AC Test Loads and Waveforms[3] R1250 Ω 5V R1250 Ω 5V OUTPUT OUTPUT R2 167Ω 30pF 90% 10% 90% 10% GND < 5 ns INCLUDING JIG AND SCOPE (a) Normal Load Equivalent to: R2 167Ω 5 pF INCLUDING JIG AND SCOPE ALL INPUT PULSES 3.0V < 5 ns (b) High Z Load THÉVENIN EQUIVALENT 100Ω OUTPUT 2.0V tPU tPD VCC SUPPLY CURRENT 50% 50% A0 − A10 ADDRESS CS2 − CS3 CS1 tAA tHZCS tACS O0 – O7 Switching Characteristics Over the Operating Range[2, 3] Parameter Description 7C291A-20 7C291A-25 7C291A-35 7C291AL-35 Min. Min. Min. Max. Max. Max. 7C291A-50 Min. Max. Unit tAA Address to Output Valid 20 25 35 50 ns tHZCS1 Chip Select Inactive to High Z 15 15 20 20 ns tACS1 Chip Select Active to Output Valid 15 15 20 20 ns tHZCS2 Chip Select Inactive to High Z 22 27 35 45 ns tACS2 Chip Select Active to Output Valid 22 27 35 45 ns tPU Chip Select Active to Power-Up tPD Chip Select Inactive to Power-Down Document #: 38-04011 Rev. *A 0 0 22 0 27 0 35 ns 45 ns Page 5 of 12 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 A10−A0 CS3 CS2 CS1 O7−O0 Other A10−A0 PGM VFY VPP D7−D0 A10−A0 VIH VIH VIL O7−O0 A10−A0 X X VIH High Z Output Disable A10−A0 X VIL X High Z Output Disable A10−A0 VIL X X High Z Program A10−A0 VILP VIHP VPP D7−D0 Program Verify A10−A0 VIHP VILP VPP O7−O0 Program Inhibit A10−A0 VIHP VIHP VPP High Z Intelligent Program A10−A0 VILP VIHP VPP D7−D0 Blank Check Zeros A10−A0 VIHP VILP VPP Zeros Mode Read Output Disable [6] 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. A5 A4 A3 A2 A1 A0 D0 D1 D2 GND 1 24 23 2 22 3 7C291A 21 4 20 5 19 6 7 8 9 10 11 12 VCC A8 A9 A10 VPP VFY 18 17 16 PGM D7 D6 15 D5 14 13 D4 D3 A4 A3 A2 A1 A0 NC D0 5 6 7 8 9 10 11 4 3 2 1 28 27 26 25 24 7C291A 23 22 21 20 19 121314151617 18 A10 VPP VFY PGM NC D7 D6 D1 D2 GND NC D3 D4 D5 A7 A6 LCC/PLCC (Opaque Only) Top View A5 A6 A7 NC VCC A8 A9 DIP Top View Figure 1. Programming Pinouts Document #: 38-04011 Rev. *A Page 6 of 12 CY7C291A Typical DC and AC Characteristics 1.2 1.4 1.2 1.0 TA =25°C f = fMAX 0.8 0.6 4.0 4.5 5.0 5.5 NORMALIZED ACCESS TIME 1.2 NORMALIZED I CC NORMALIZED I CC 1.6 1.1 1.0 0.9 0.8 −55 6.0 25 1.6 1.4 1.2 1.0 0.8 50 25.0 40 30 20 10 0 5.0 0 1.0 2.0 6.0 15.0 10.0 0.0 4.0 3.0 5.5 20.0 VCC =4.5V TA =25°C 5.0 0 200 OUTPUT VOLTAGE (V) 400 600 800 1000 CAPACITANCE (pF) I CC vs. CYCLE PERIOD 175 1.02 150 1.00 NORMALIZED I CC OUTPUT SINK CURRENT (mA) 4.5 TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING 30.0 OUTPUT SINK CURRENT vs. OUTPUT VOLTAGE 125 100 75 VCC =5.0V TA =25°C 25 0 0.0 TA =25°C 0.4 4.0 60 AMBIENT TEMPERATURE (°C) 50 0.6 OUTPUT SOURCE CURRENT vs. VOLTAGE 125 25 0.8 SUPPLY VOLTAGE (V) DELTA t AA (ns) OUTPUT SOURCE CURRENT (mA) NORMALIZED ACCESS TIME vs. TEMPERATURE 0.6 −55 125 1.0 AMBIENT TEMPERATURE (°C) SUPPLY VOLTAGE (V) NORMALIZED ACCESS TIME NORMALIZED ACCESS TIME vs. SUPPLY VOLTAGE NORMALIZED SUPPLY CURRENT vs. AMBIENT TEMPERATURE NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE VCC =5.5V TA =25°C 0.98 0.96 0.94 0.92 0.90 1.0 2.0 3.0 OUTPUT VOLTAGE (V) Document #: 38-04011 Rev. *A 4.0 0.88 0 25 50 75 100 CYCLE PERIOD (ns) Page 7 of 12 CY7C291A Ordering Information Speed (ns) ICC (mA) 20 120 25 35 90 60 90 120 50 90 Ordering Code Package Name Package Type Operating Range CY7C291A-20JC J64 28-Lead Plastic Leaded Chip Carrier CY7C291A-20PC P13 24-Lead (300-Mil) Molded DIP CY7C291A-25JC J64 28-Lead Plastic Leaded Chip Carrier CY7C291A-25PC P13 24-Lead (300-Mil) Molded DIP CY7C291A-25SC S13 24-Lead Molded SOIC CY7C291A-25WC W14 24-Lead (300-Mil) Windowed CerDIP CY7C291AL-35JC J64 28-Lead Plastic Leaded Chip Carrier CY7C291AL-35PC P13 24-Lead (300-Mil) Molded DIP CY7C291AL-35WC W14 24-Lead (300-Mil) Windowed CerDIP CY7C291A-35JC J64 28-Lead Plastic Leaded Chip Carrier CY7C291A-35PC P13 24-Lead (300-Mil) Molded DIP CY7C291A-35WC W14 24-Lead (300-Mil) Windowed CerDIP CY7C291A-35DMB D14 24-Lead (300-Mil) CerDIP CY7C291A-35QMB Q64 28-Pin Windowed Leadless Chip Carrier CY7C291A-50PC P13 24-Lead (300-Mil) Molded DIP Commercial CY7C291A-50WMB W14 24-Lead (300-Mil) Windowed CerDIP Military Document #: 38-04011 Rev. *A Commercial Commercial Commercial Commercial Military Page 8 of 12 CY7C291A MILITARY SPECIFICATIONS Group A Subgroup Testing DC Characteristics Switching Characteristics Parameter Subgroups Parameter Subgroups VOH 1, 2, 3 tAA 7, 8, 9, 10, 11 VOL 1, 2, 3 tACS1 7, 8, 9, 10, 11 VIH 1, 2, 3 VIL 1, 2, 3 IIX 1, 2, 3 IOZ 1, 2, 3 ICC 1, 2, 3 5962-87650 01LX CY7C291-50WMB ISB 1, 2, 3 5962-87650 03LX CY7C291-35WMB 5962-88734 023X CY7C291A-35LMB 5962-88734 033X CY7C291A-35LMB 5962-88734 04LX CY7C291A-25DMB 5962-88734 043X CY7C291A-25LMB SMD Cross Reference SMD Number Suffix Cypress Number Package Diagrams 24-Lead (300-Mil) CerDIP D14 MIL-STD-1835 D- 9 Config.A 51-80031-** Document #: 38-04011 Rev. *A Page 9 of 12 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-** Document #: 38-04011 Rev. *A Page 10 of 12 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 Page 11 of 12 © 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 ECN NO. Issue Date Orig. of Change ** 114138 03/18/02 DSG Change from Spec number: 38-00075 to 38-04011 *A 118905 10/11/02 GBI Update ordering information REV. Document #: 38-04011 Rev. *A Description of Change Page 12 of 12