STK15C88-S35I Cypress Semiconductor Corp, STK15C88-S35I Datasheet
STK15C88-S35I
Specifications of STK15C88-S35I
Related parts for STK15C88-S35I
STK15C88-S35I Summary of contents
Page 1
... AutoStore ™ nvSRAM High Performance CMOS Nonvolatile Static RAM DESCRIPTION The Simtek STK15C88 is a fast static RAM with a nonvolatile, electrically-erasable PROM element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent, nonvolatile data resides in EEPROM ...
Page 2
... STK15C88 ABSOLUTE MAXIMUM RATINGS Voltage on input relative –0. Voltage –0. 0-7 Temperature under bias . . . . . . . . . . . . . . . . . . . . . – 125 C Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . – 150 C Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W DC output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15mA DC CHARACTERISTICS SYMBOL PARAMETER b I Average Current Average Current During STORE Average V Current 200ns CC 3 AVAV ...
Page 3
... DQ(Data Out) t ELICCH I STANDBY CC August 1998 PARAMETER ; device is continuously selected AVAV 3 t AVQV 5 t AXQX AVAV 1 t ELQV 6 t ELQX 4 t GLQV 8 t GLQX 10 ACTIVE 5-37 STK15C88 (V = 5.0V cc STK15C88-25 STK15C88-35 STK15C88-45 MIN MAX MIN MAX MIN MAX DATA VALID 11 t EHICCL 7 ...
Page 4
... AVAV 14 t ELWH 17 t AVWH 13 t WLWH 15 t DVWH DATA VALID 20 t WLQZ HIGH IMPEDENCE AVAV 14 t ELEH 17 t AVEH 13 t WLEH 15 t DVEH DATA VALID HIGH IMPEDENCE 5- 5.0V 10%) cc STK15C88-35 STK15C88-45 UNITS MAX MIN MAX MIN MAX WHAX 16 t WHDX ...
Page 5
... SWITCH 24 t DELAY BROWN OUT BROWN OUT AutoStore ™ NO RECALL NO RECALL DID NOT GO (V DID NOT BELOW V BELOW V ) RESET RESET 5-39 STK15C88 (V = 5.0V cc STK15C88 UNITS NOTES MIN MAX 550 4.0 4 STORE BROWN OUT AutoStore ™ RECALL WHEN ABOVE V SWITCH ) ...
Page 6
... Note l: The six consecutive addresses must be in order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle. Note m: While there are 15 addresses on the STK15C88, only the lower 14 are used to control software modes. SOFTWARE CYCLES #1 & #2 SYMBOLS NO. ...
Page 7
... The STK15C88 is a versatile memory chip that pro- vides several modes of operation. The STK15C88 can operate as a standard 32K x 8 32K x 8 shadow to which the EEPROM mation can be copied, or from which the be updated in nonvolatile mode. NOISE CONSIDERATIONS Note that the STK15C88 is a high speed memory and so must have a high frequency bypass capaci- tor of approximately 0 ...
Page 8
... The overall cycle. Software initi- average current drawn by the STK15C88 depends on the following items: 1) CMOS vs. TTL input lev- els; 2) the duty cycle of chip enable; 3) the overall cycle rate for accesses; 4) the ratio of ’ ...
Page 9
... STK15C88 August 1998 ORDERING INFORMATION - Temperature Range Access Time Package 5-43 STK15C88 blank = Commercial ( degrees Industrial (– degrees 25ns 35 = 35ns 45 = 45ns W = Plastic 28 pin 600 mil DIP P = Plastic 28 pin 300 mil DIP S = Plastic 28 pin 350 mil SOIC N = Plastic 28 pin 300 mil SOIC ...