STK25CA8-D45 데이터 시트보기 (PDF) - Simtek Corporation

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STK25CA8-D45

128K x 8 AutoStore™ nvSRAM QuantumTrap™ CMOS Nonvolatile Static RAM Module

Simtek Corporation 

AutoStore™/POWER-UP RECALL

SYMBOLS

NO.

Standard

PARAMETER

22

tRESTORE

23

tSTORE

24

tDELAY

25

VSWITCH

26

VRESET

Power-up RECALL Duration

STORE Cycle Duration

Time Allowed to Complete SRAM Cycle

Low Voltage Trigger Level

Low Voltage Reset Level

Note k: tRESTORE starts from the time VCC rises above VSWITCH.

AutoStore™/POWER-UP RECALL

VCC

5V

25

VSWITCH

26

VRESET

AutoStore™

POWER-UP RECALL

W

22

tRESTORE

DQ (DATA OUT)

24

tDELAY

STK25CA8

(VCC = 5.0V 10%)

STK25CA8

MIN MAX

550

10

1

4.0

4.5

UNITS NOTES

µs

k

ms

g

µs

g

V

3.9

V

23

tSTORE

POWER-UP

BROWN OUT

RECALL NO STORE DUE TO

NO SRAM WRITES

NO RECALL

(VCC DID NOT GO

BELOW VRESET)

BROWN OUT

AutoStore™

NO RECALL

(VCC DID NOT GO

BELOW VRESET)

BROWN OUT

AutoStore™

RECALL WHEN

VCC RETURNS

ABOVE VSWITCH

August 1999

6-5

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