Cypress CY7C292A User's Manual
Contents
1. NORMALIZED ACCESS TIME vs SUPPLY VOLTAGE 40 45 50 55 60 SUPPLY VOLTAGE V C291A 10 TYPICAL ACCESS TIME CHANGE vs OUTPUT LOADING 30 0 25 0 20 0 0 0 200 400 CAPACITANCE pF 600 800 1000 y Nas N 7 CYPRESS Typical DC and AC Characteristics OUTPUT SINK CURRENT vs OUTPUT VOLTAGE 75 CY7C291A CY7C292A CY7C293A Icc vs CYCLE PERIOD Tm Du Nc S 5 E z o 0 0 1 0 2 0 3 0 4 0 OUTPUT VOLTAGE V CYCLE PERIOD ns Ordering Information Speed lcc Package Operating ns mA Ordering Code Name Package Type Range 20 120 CY7C291A 20JC J64 28 Lead Plastic Leaded Chip Carrier Commercial CY7C291A 20PC P13 24 Lead 300 Mil Molded DIP CY7C291A 20SC 13 24 Lead Molded SOIC CY7C291A 20WC W14 24 Lead 300 Mil Windowed CerDlP 25 60 CY7C291AL 25JC J64 28 Lead Plastic Leaded Chip Carrier Commercial CY7C291AL 25PC P13 24 Lead 300 Mil Molded DIP CY7C291AL 25WC W14 24 Lead 300 Mil Windowed CerDIP 90 CY7C291A 25JC J64 28 Lead Plastic Leaded Chip Carrier CY7C291A 25PC P13 24 Lead 300 Mil Molded DIP CY7C291A 25SC 13 24 Lead Molded SOIC CY7C291A 25WC W14 24 Lead 300 Mil Windowed CerDIP 120 CY7C291A 25DMB D14 24 Lead 300 Mil CerDIP Military CY7C291A 25LMB L64 28 Square Leadless Chip Carrier CY7C291A 25QMB Q64 28 Pin Windowed Leadless Chip Carrier CY7C291A 25TMB T73 24 Lead Windowed Cerpack2. L 0325 0440 L a120 0490 L 64140 011 ed J 3 MIN 0 160 LL 0 015 0 012 14 CY7C291A SE CYPRESS CYZC292A CYTC293A Package Diagrams Continued 28 Pin Windowed Leadless Chip Carrier Q64 MIL STD 1835 C 4 DIMENSIONS IN INCHES 045 MIN gl de SE PIN 1 PAN m9 vd MAX BOTTOM U U 22 3 p 028 4 T 045 TT 055 045 LHH HHH HT 008 R 087 8 PLACES kees 290 DIA n 045 ENS 066 TOP SIDE 442 458 442 458 24 Lead 300 Mil Molded SOIC S13 PIN 1 ID HHHHHBHRBHRHRHD e 0 393 DIMENSIONS IN INCHES MIN 0 291 0420 MAX 0 300 LEAD CHPLANARITY 0 004 MAX ULHHHEEHTER dL 0 026 1032 SEATING PLANE 0 597 0 615 f 0 007 0050 JL 0 013 0 003 0015 a L 0 013 TYP 0 019 0 018 0 050 Cypress Semiconductor Corporation 1993 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 sy
3. 24 Lead 600 Mil CerDIP Military 20 120 CY7C293A 20PC P13 24 Lead 300 Mil Molded DIP Commercial CY7C293A 20WC W14 24 Lead 300 Mil Windowed CerDIP 25 120 CY7C293A 25PC P13 24 Lead 300 Mil Molded DIP Commercial CY7C293A 25WC W14 24 Lead 300 Mil Windowed CerDIP CY7C293A 25DMB D14 24 Lead 300 Mil CerDIP Military CY7C293A 25LMB L64 28 Square Leadless Chip Carrier CY7C293A 25QMB Q64 28 Pin Windowed Leadless Chip Carrier CY7C293A 25WMB W14 24 Lead 300 Mil Windowed CerDIP CY7C291A i M CYPRESS CY7C292A CY7C293A Ordering Information Continued Speed lc Package Operating ns m Ordering Code Name Package Type Range 30 120 CY7C293A 30DMB D14 24 Lead 300 Mil CerDIP Military CY7C293A 30LMB L64 28 Square Leadless Chip Carrier CY7C293A 30QMB Q64 28 Pin Windowed Leadless Chip Carrier CY7C293A 30WMB W14 24 Lead 300 Mil Windowed CerDIP 35 60 CY7C293AL 35PC P13 24 Lead 300 Mil Molded DIP Commercial CY7C293AL 35WC W14 24 Lead 300 Mil Windowed CerDIP 90 CY7C293A 35PC P13 24 Lead 300 Mil Molded DIP Commercial CY7C293A 35WC W14 24 Lead 300 Mil Windowed CerDIP 90 CY7C293A 35DMB D14 24 Lead 300 Mil CerDIP Military CY7C293A 35LMB L64 28 Square Leadless Chip Carrier CY7C293A 35QMB Q64 28 Pin Windowed Leadless Chip Carrier CY7C293A 35WMB W14 24 Lead 300 Mil Windowed CerDIP 50 60 CY7C293AL 50PC P13 24 Lead 300 Mil Molded DIP
4. Commercial CY7C293AL 50WC W14 24 Lead 300 Mil Windowed CerDIP 90 CY7C293A 50PC P13 24 Lead 300 Mil Molded DIP Commercial CY7C293A 50WC W14 24 Lead 300 Mil Windowed CerDIP 90 CY7C293A 50DMB D14 24 Lead 300 Mil CerDIP Military CY7C293A 50LMB L64 28 Square Leadless Chip Carrier CY7C293A 50QMB Q64 28 Pin Windowed Leadless Chip Carrier CY7C293A 50WMB W14 24 Lead 300 Mil Windowed CerDIP CY7C291A I CY7C292A CY7C293A MILITARY SPECIFICATIONS Group A Subgroup Testing SMD Cross Reference SMD Cypress DC Characteristics Number Suffix Number Parameter Subaroups 5962 87650 01KX CY7C291 50TMB 5962 87650 O1LX CY7C291 50WMB VoH 1 2 3 V 5962 87650 013X CY7C291 50QMB OL E V EE 5962 87650 03KX CY7C291 35TMB IH Ee V CES 5962 87650 03LX CY7C291 35WMB IL 1 53 5962 87650 033X CY7C291 35QMB IX RZ i 123 5962 88680 O1LX CY7C293A 50WMB OZ E i 128 5962 88680 01KX CY7C293A 50TMB CC Os is ol 123 5962 88680 013X CY7C293A 50QMB 5962 88680 02LX CY7C293A 35WMB Switching Characteristics 5962 88680 02KX CY7C293A 35TMB BG S bdro ps 5962 88680 023X CY7C293A 35QMB RENET 5962 88680 03LX CY7C293A 30WMB AA O J 5962 88680 03KX Y7C293A 30TMB tacsi d 7 8 9 10 11 G 5962 88680 033X Y7C293A 30QMB ace 78 0 16 11 33 CY7C293A 30Q
5. 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 loca tion 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 cus tomer programming the product will meet DC and AC specifi cation limits A read is accomplished by placing an active LOW signal on CS4 and active HIGH signals on CS and CS3 The contents of the memory location addressed by the address line Ag A49 will become available on the output lines Og O7 Pin Configurations DIP Top View LCC PLCC Opaque Only Top View O 21 0 7C293A 20 1 19 121314151617 18 o o29j9g o C291A 3 C291A 2 Window available on 7C291A and 7C293A only C291A 1 Cypress Semiconductor Corporation 3901 North First Street SanJose CA95134 408 943 2600 March 1986 Revised May 1993 CY7C291A Zeng GS CY7C292A CY7C293A Selection Guide 7C291A 25 7C291A 35 7C291A 50 7C292A 25 7C292A 35 7C292A 50 7C293A 25 7C293A 35 7C293A 50 7C291A 20 7C291AL 25 7C291AL 35 7C291AL 50 7C292A 20 7C292AL 25 7C292AL 35 7C292AL 50 7C293A 20 7C293AL 25 7C293AL 35 7C293AL 50 Maximum Access Time ns 20 25 35 50 Maximum Operating Standard Commercial 120 90 90 90 A SET Military 120 90 90 L Commercia
6. i 3 g 065 110 155 015 330 toD SEATING PLANE 390 13 CY7C291A CY7C292A CY7C293A 28 Square Leadless Chip Carrier L64 MIL STD 1835 C 4 j 085 PIN 1 095 Pd DIMENSIONS IN INCHES MIN BOTTOM ER MAX L 088 045 T 055 045 p C4 055 K 008 R DEA 88 PLACES FWsg 4 1 045 066 TOP SIDE 442 458 L 442 458 CY7C291A CY7C292A CY7C293A d M Wu Package Diagrams Continued 24 Lead 600 Mil Molded DIP P11 PIN 1 pi pur p wes 1 DIMENSIONS IN INCHES MIN MAX Q 0 930 0 590 hr eh ha w Tel bd ug h Hd _ L_ 0 060 0 080 1230 1260 i us cec U ols 0 160 L 1 099 0090 4 L 0 065 24 Lead 300 Mil Molded DIP P13 P13A DIMENSIONS IN INCHES MIN MAX PIN 1 U fy ty dt d P 13 P 13A f Note al 1170 1230 ZE 1200 1260 i 0 030 0 060 i Tt h h Tat i hg hui Ale NHTE B SRC 0 080 NOTE SA F OTE A SEATING PLANE 0290 _
7. ue 5962 88680 04LX CY7C293A 25WMB UU aU Once oni 5962 88680 04KX CY7C293A 25TMB a E 5962 88680 043X CY7C293A 25QMB ocument S 5962 88734 02JX CY7C292A 45DMB 5962 88734 02KX CY7C291A 45KMB 5962 88734 02LX CY7C291A 45DMB 5962 88734 023X CY7C291A 45LMB 5962 88734 03JX CY7C292A 35DMB 5962 88734 03KX CY7C291A 35KMB 5962 88734 03LX CY7C291A 35DMB 5962 88734 033X CY7C291A 35LMB 5962 88734 DAIN CY7C292A 25DMB 5962 88734 04KX CY7C291A 25KMB 5962 88734 04LX CY7C291A 25DMB 5962 88734 043X CY7C291A 25LMB lt w i RJ A o a EE GE es CYPRESS Package Diagrams 24 Lead 600 Mil CerDIP D12 MIL STD 1835 D 3 Config A ET EN PEE n INCHES I MAX C 550 Yd 005 E PLANE 590 vs F 1 230 620 1 280 015 ees 015 7f bs 125 150 202 200 MIN 012 7 i 05 O I 630 i 045 110 690 i 065 015 020 SEATING PLANE 24 Lead 300 Mil CerDIP D14 MIL STD 1835 D 9Config A PIN N DIMENSIONS IN INCHES IN i MAX 245 aU 065 165 005 MIN Sms BASE PLANE 1230 1280 CS 200 i ga EE 1 i 125 L 1 200 MIN 009 045 090 A i
8. 35 50 7C293A 35 50 Parameter Description Test Conditions Min Max Min Max Unit Vou Output HIGH Voltage Vec Min lou 4 0 mA 2 4 2 4 V VoL Output LOW Voltage Vec Min loj 16 0 mA 0 4 0 4 V Vu Input HIGH Voltage Guaranteed Input Logical 2 0 2 0 V HIGH Voltage for All Inputs Vu Input LOW Voltage Guaranteed Input Logical 0 8 0 8 V LOW Voltage for All Inputs lix Input Load Current GND lt Vy lt Vec 10 10 10 10 uA Vcp Input Diode Clamp Voltage Note 4 loz Output Leakage Current GND lt Vout lt Vcc 10 10 10 10 uA Output Disabled los Output Short Circuit CurrentP Voc Max Vour GND 20 90 20 90 mA loc Voc Operating Supply Current Voc Max Commercial 60 90 mA Vin 2 0V loyr 0 mA Military 90 Isp Standby Supply Current Vcc Max Commercial 30 30 mA 7C293A Onl CS V nly 17 H Military 40 Vpp Programming Supply Voltage 12 13 12 13 V lpp Programming Supply Current 50 50 mA VIHP Input HIGH Programming Voltage 3 0 3 0 VILP Input LOW Programming Voltage 0 4 0 4 V Capacitance Parameter Description Test Conditions Max Unit Cin Input Capacitance 25 C f 1 MHz 10 pF Vcc 5 0V Cour Output Capacitance 10 pF CY7C291A I o GS CY7C292A CY7C293A AC Test Loads and Waveforms R1250 O R1250 O S i ALL INPUT PULSES OUTPUT OUTPUT 3 0V R2 R2 Bui 1672 ug T 1670 GND L INCLUDING L INCLUDING e ST gt sons JIG AND 7 B JIG AND 7 s SCOPE SCOPE C291
9. 93A Ordering Information Continued Speed lc Package Operating ns m Ordering Code Name Package Type Range 50 60 CY7C291AL 50JC J64 28 Lead Plastic Leaded Chip Carrier Commercial CY7C291AL 50PC P13 24 Lead 300 Mil Molded DIP CY7C291AL 50WC W14 24 Lead 300 Mil Windowed CerDIP 90 CY7C291A 50SC 13 24 Lead Molded SOIC Commercial CY7C291A 50PC P13 24 Lead 300 Mil Molded DIP CY7C291A 50WC W14 24 Lead 300 Mil Windowed CerDlP 90 CY7C291A 50DMB D14 24 Lead 300 Mil CerDIP Military CY7C291A 50LMB L64 28 Square Leadless Chip Carrier CY7C291A 50OMB Q64 28 Pin Windowed Leadless Chip Carrier CY7C291A 50TMB T73 24 Lead Windowed Cerpack CY7C291A 50WMB W14 24 Lead 300 Mil Windowed CerDIP 20 120 CY7C292A 20DC D12 24 Lead 600 Mil CerDIP Commercial CY7C292A 20PC P11 24 Lead 600 Mil Molded DIP 25 120 CY7C292A 25DC D12 24 Lead 600 Mil CerDIP Commercial CY7C292A 25PC P11 24 Lead 600 Mil Molded DIP CY7C292A 25DMB D12 24 Lead 600 Mil CerDIP Military 30 120 CY7C292A 30DMB D12 24 Lead 600 Mil CerDIP Military 35 60 CY7C292AL 35PC P11 24 Lead 600 Mil Molded DIP Commercial 90 CY7C292A 35DC D12 24 Lead 600 Mil CerDIP Commercial CY7C292A 35PC P11 24 Lead 600 Mil Molded DIP 120 CY7C292A 35DMB D12 24 Lead 600 Mil CerDIP Military 50 60 CY7C292AL 50PC P11 24 Lead 600 Mil Molded DIP Commercial 90 CY7C292A 50DC D12 24 Lead 600 Mil CerDIP Commercial CY7C292A 50PC P11 24 Lead 600 Mil Molded DIP 120 CY7C292A 50DMB D12
10. A 4 C291A 5 a Normal Load b HighZ Load Equivalent to THEVENIN EQUIVALENT 1000 OUTPUT o sa cai W 2 0V C291A 6 t Es PU V SUPPLY 50 KE 50 CURRENT E ADDRESS I CS taa tuzcs tacs 00 lt On O gt gt gt D KX C291A 7 Switching Characteristics Over the Operating Range 7C291A 25 7C291A 35 7C291A 50 7C292A 25 7C292A 35 7C292A 50 7C293A 25 7C293A 35 7C293A 50 7C291A 20 7C291AL 25 7C291AL 35 7C291AL 50 7C292A 20 7C292AL 25 7C292AL 35 7C292AL 50 7C293A 20 7C293AL 25 7C293AL 35 7C293AL 50 Parameter Description Min Max Min Max Min Max Min Max Unit LAA Address to Output Valid 20 25 35 50 ns tuzcst Chip Select Inactive to High Z 15 15 20 20 ns tacs1 Chip Select Active to Output Valid 15 15 20 20 ns tuzcse Chip Select Inactive to High Z 22 27 35 45 ns 7C293A CS Only tacse Chip Select Active to Output Valid 22 27 35 45 ns 7C293A CS Only tpu Chip Select Active to Power Up 0 0 0 0 ns 7C293A CS Only tpp Chip Select Inactive to Power Down 22 27 35 45 ns 7C293A CS Only i CY7C291A Switching Characteristics Over the Operating Range 7C291A 25 7C291A 35 7C291A 50 7C292A 25 7C292A 35 7C292A 50 7C293A 25 7C293A 35 7C293A 50 7C291A 20 7C291AL 25 7C291AL 35 7C291AL 50 7C292A 20 7C292AL 25 7C292AL 35 7C292AL 50 7C293A 20 7C293AL 25 7C293AL 35 7C293AL 50 Parameter
11. CY7C291A 25WMB W14 24 Lead 300 Mil Windowed CerDlP 30 120 CY7C291A 30DMB D14 24 Lead 300 Mil CerDIP Military CY7C291A 30LMB L64 28 Square Leadless Chip Carrier CY7C291A 30QMB Q64 28 Pin Windowed Leadless Chip Carrier CY7C291A 30TMB T73 24 Lead Windowed Cerpack CY7C291A 30WMB W14 24 Lead 300 Mil Windowed CerDlP 35 60 CY7C291AL 35JC J64 28 Lead Plastic Leaded Chip Carrier Commercial CY7C291A i M CYPRESS CY7C292A CY7C293A Ordering Information Continued Speed lc Package Operating ns m Ordering Code Name Package Type Range CY7C291AL 35PG P13 24 Lead 300 Mil Molded DIP CY7C291AL 35WC W14 24 Lead 300 Mil Windowed CerDIP 90 CY7C291A 35SC 13 24 Lead Molded SOIC Commercial CY7C291A 35PC P13 24 Lead 300 Mil Molded DIP CY7C291A 35WC W14 24 Lead 300 Mil Windowed CerDIP 120 CY7C291A 35DMB D14 24 Lead 300 Mil CerDIP Military CY7C291A 35LMB L64 28 Square Leadless Chip Carrier CY7C291A 35QMB Q64 28 Pin Windowed Leadless Chip Carrier CY7C291A 35TMB T73 24 Lead Windowed Cerpack CY7C291A 35WMB W14 24 Lead 300 Mil Windowed CerDIP Notes 9 Most of these products are available in industrial temperature range Contact a Cypress representative for specifications and product availability i M CY7C291A CYPRESS CY7C292A CY7C2
12. Description Min Max Min Max Min Max Min Max Unit Notes 6 tHzesz and Les refer to 7C293A CS only 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 inten sity x exposure time of 25 Wsec cm2 For an ultraviolet lamp with a 12 mW cm power rating the exposure time would be approximately 35 minutes Table 1 Mode Selection These PROMs need to be within 1 inch of the lamp during erasure Permanent damage may result if the PROM is ex posed to high intensity UV light for an extended period of time 7258 Wsec cm 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 pack ages please see the PROM Programming Information located at the end of this section Programming algorithms can be ob tained from any Cypress representative Pin Function Read or Output Disable A49 Ag CS CS CS 0 Op Mode Other A10 Ag PGM VFY Vpp D Dg Read Aqo Ao Vu Vu VL O7 Op Ou
13. geg r _ A 9 cs po d CY7C291A CY7C292A CY7C293A CYPRESS W Features Windowed for reprogrammability CMOS for optimum speed power High speed 20 ns commercial 25 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 gt 2001V static discharge Functional Description The CY7C291A CY7C292A and CY7C293A are high perfor mance 2K word by 8 bit CMOS PROMs They are functionally Logic Block Diagram PROGRAM MABLE ARRAY 2K x 8 Reprogrammable PROM identical but are packaged in 300 mil 7C291A 7C293A and 600 mil wide plastic and hermetic DIP packages 7C2924 The CY7C293A has an automatic power down feature which reduces the power consumption by over 7096 when deselect ed The 300 mil ceramic package may be equipped with an erasure window when exposed to UV light the PROM is erased and can then be reprogrammed The memory cells uti lize proven EPROM floating gate technology and byte wide in telligent programming algorithms The CY7C291A CY7C292A and CY7C293A are plug in re placements for bipolar devices and offer the advantages of lower power reprogrammability superior performance
14. l 60 60 60 Standby Current mA Commercial 40 30 30 30 7C293A Onl id Military 40 40 40 Maximum Ratings Latch Up Cument sse gt 200 mA Above which the useful life may be impaired For user guide lines not tested Operating Range Storage Temperature 65 C to 150 C Range wa Vcc AE WTZ 55 C to 125 C Commercial 0 C to 70 C SV 10 Supply Voltage to Ground Potential 0 5V to 7 0V Industrial 40 C to 85 C 5V 10 DC Voltage Applied to Outputs Militaryl2l 55 C to 125 C 5V 10 in High Z State 0 5V to 7 0V DC Input Voltage a e SE dE DC Program Voltage aa 13 0V S Ee UV Exposure 7258 Wsec cm Static Discharge Voltage eseeseeeeeeeeeeeeeeereeeeeeeen gt 2001V per MIL STD 883 Method 3015 i N CY7C291A CYPRESS CY7C292A CY7C293A Electrical Characteristics Over the Operating Rangel9 l 7C291A 20 7C291A 25 7C291AL 25 7C292A 20 7C292A 25 7C292AL 25 7C293A 20 7C293A 25 7C293AL 25 Parameter Description Test Conditions Min Max Min Max Min Max Unit VoH Output HIGH Voltage Vec Min lop 2 4 0 mA 2 4 2 4 2 4 V VoL Output LOW Voltage Voc Min lo 16 0 mA 0 4 0 4 0 4 V Vu Input HIGH Voltage Guaranteed Inpu
15. stems 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 an M Whe CYPRESS Package Diagrams Continued 24 Lead Windowed Cerpack T73 PIN LD 005 015 RU U B o R o 5 4D 260 Re CY7C291A CY7C292A CY7C293A DIMENSIONS IN INCHES 170 DIA LENS 005 MIN BASE AND SEATING i PLANE 080 24 Lead 300 Mil WindowedCerDIP W14 MIL STD 1835 D 9 Config A 178 DIA PIN LENS E Y C 245 m Ree DIMENSIONS IN INCHES y 005 M MIN Hs OTT MAX DER BASE PLANE 155 L230 290 eo 1 280 os 380 T 125 150 200 MIN 009 i 045 090 E a 065 410 is 015 330 BE SEATING PLANE a
16. t Logical 2 0 Vcc 20 Vec 20 Veco V HIGH Voltage for All Inputs Vu Input LOW Voltage Guaranteed Input Logical 0 8 0 8 0 8 V LOW Voltage for All Inputs lix Input Load Current GND Vy lt Vcc 10 10 10 10 10 10 uA Vcp Input Diode Clamp Voltage Note 4 loz Output Leakage Current GND lt Vour lt Veco 10 10 10 10 10 10 uA Output Disabled los Output Short Circuit Voc Max Vour GND 20 90 20 90 20 90 mA Current loc Vcc Operating Supply Voc Max Com 120 90 60 mA C t lour 0 mA SE SEET Mil 120 Isp Standby Supply Current Voc Max Com 40 30 30 mA 7C293A Onl CS V nly 17 Vin Mil 40 Vpp Programming Supply Voltage 12 13 12 13 12 13 V lpp Programming Supply Current 50 50 50 mA VIHP Input HIGH Programming 3 0 3 0 3 0 V Voltage VILP Input LOW Programming 0 4 0 4 0 4 V Voltage Notes 3 See the last page of this specification for Group A subgroup testing information 4 See the Introduction to CMOS PROMs section of the Cypress Data Book for general information on testing 5 For test purposes not more than one output at a time should be shorted Short circuit test duration should not exceed 30 seconds CY7C291A Zeng GS CY7C292A CY7C293A Electrical Characteristics Over the Operating Rangel continued 7C291AL 35 50 7C291A 35 50 7C292AL 35 50 7C292A 35 50 7C293AL
17. tput Disable A10 Ao x x Vin High Z Output Disable Aun Ag X Vu X High Z Output Disable A19 Ag VIL X X High Z Program Aqo Ao VILP VIHP VPP D Do Program Verify A49 Ao VIHP VILP Vpp O7 Oo Program Inhibit A19 Ag VIHP VIHP Vpp High Z Intelligent Program A19 Ag Vu p VIHP Vpp D Do Blank Check Zeros A49 Ao VIHP VILP Vpp Zeros Notes 7 X don t care but not to exceed Vcc 5 8 The power down mode for the CY7C293A is activated by deselecting CS4 E CYPRESS DIP Top View A 1 Vcc Ae O 2 Ag Ae 3 221 Ag deeg As L 57c293A 20U Wee A2 VFY A PGM Ao D Do Ds Di Ds Do D4 GND 12 Da C291A 8 CY7C291A CY7C292A CY7C293A LCC PLCC Opaque Only Top View KOS o LLEZL LR 7C291A O 0 7C293A 1 19 121314151617 18 co sr DN aasodd o Figure 1 Programming Pinouts Typical DC and AC Characteristics NORMALIZED SUPPLY CURRENT vs SUPPLY VOLTAGE 1 6 NORMALIZED cc NORMALIZED ACCESS TIME NORMALIZED SUPPLY CURRENT vs AMBIENT TEMPERATURE NORMALIZED lec o o o 0 8 4 5 9 0 5 5 6 0 55 SUPPLY VOLTAGE V NORMALIZED ACCESS TIME vs TEMPERATURE 60 50 40 30 20 10 OUTPUT SOURCE CURRENT mA 0 0 AMBIENT TEMPERATURE C NORMALIZED ACCESS TIME 125 AMBIENT TEMPERATURE C OUTPUT SOURCE CURRENT vs VOLTAGE DELTA t AA ns 30 4 0 OUTPUT VOLTAGE V C291A 9
Download Pdf Manuals
Related Search