STK22C48-W45I Cypress Semiconductor Corp, STK22C48-W45I Datasheet
STK22C48-W45I
Specifications of STK22C48-W45I
Related parts for STK22C48-W45I
STK22C48-W45I Summary of contents
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... July 1999 AutoStore™ nvSRAM QuantumTrap™ CMOS Nonvolatile Static RAM DESCRIPTION The Simtek STK22C48 is a fast static nonvolatile, electrically erasable incorporated in each static memory cell. The can be read and written an unlimited number of times, while independent, nonvolatile data resides in EEPROM EEPROM automatically on power down. A 68µ ...
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... V Output Logic “0” Voltage OL V Logic “0” Voltage on HSB Output BL T Operating Temperature A Note b: The STK22C48-20 requires V = 5.0V CC Note c: I and I are dependent on output loading and cycle rate. The specified values are obtained with outputs unloaded Note d: I and I ...
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... STK22C48-20 PARAMETER MIN MAX AVAV AVQV t AXQX AVAV 1 t ELQV 6 t ELQX 4 t GLQV 8 t GLQX 10 t ELICCH ACTIVE 3-23 STK22C48 = 5.0V ± 10 STK22C48-25 STK22C48-35 STK22C48-45 MIN MAX MIN MAX MIN MAX DATA VALID EHICCL 7 t EHQZ 9 t GHQZ DATA VALID b, f ...
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... AVAV 14 t ELWH 17 t AVWH 13 t WLWH 15 t DVWH DATA VALID 20 t WLQZ HIGH IMPEDANCE AVAV 14 t ELEH 17 t AVEH 13 t WLEH 15 t DVEH HIGH IMPEDANCE 3-24 = 5.0V ± 10 STK22C48-25 STK22C48-35 STK22C48-45 MIN MAX MIN MAX MIN MAX WHAX 16 t WHDX ...
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... Hardware STORE Low to Store Busy is complete HLHX 22 t STORE 26 t HLBL 23 t DELAY 3-25 STK22C48 I/O POWER NOTES Output High Z Standby Output Data Active Input Data Active Output High 5.0V ± 10 STK22C48 UNITS NOTES MIN MAX 10 ms µs 1 700 300 RECOVER HIGH IMPEDANCE DATA VALID ...
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... DELAY BROWN OUT BROWN OUT NO STORE AutoStore™ (NO SRAM WRITES) NO RECALL NO RECALL (V DID NOT GO (V DID NOT BELOW V ) BELOW V RESET 3-26 = 5.0V ± 10 STK22C48 UNITS MIN MAX 550 10 300 1 4.0 4.5 3 STORE BROWN OUT AutoStore™ RECALL WHEN V RETURNS CC ) ABOVE V RESET ...
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... In system power mode (Figure 3), both V V are connected to the + 5V power supply without CAP the 68µF capacitor. In this mode the AutoStore™ function of the STK22C48 will operate on the stored system charge as power goes down. The user must, however, guarantee that V 3.6V during the 10ms cycle and must ...
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... HSB OPERATION The STK22C48 provides the HSB pin for controlling and acknowledging the operations. The HSB STORE pin is used to request a hardware When the HSB pin is driven low, the STK22C48 will conditionally initiate a operation after t STORE an actual cycle will only begin if a STORE ...
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... WRITE than 100%, only standby current is drawn when the . This is the chip is disabled. The overall average current drawn CAP s are STORE by the STK22C48 depends on the following items: 1) CMOS chip enable; 3) the overall cycle rate for accesses; 4) the ratio of temperature; 6) the V 100 ...
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... STK22C48 STK22C48 - July 1999 ORDERING INFORMATION Temperature Range Access Time Package 3-30 Blank = Commercial (0 to 70° Industrial (-40 to 85° 20ns (Commercial only 25ns 35 = 35ns 45 = 45ns P = Plastic 28-pin 300 mil DIP W = Plastic 28-pin 600 mil DIP N = Plastic 28-pin 300 mil SOIC S = Plastic 28-pin 350 mil SIOC ...