STK14C88-3N45 Ver la hoja de datos (PDF) - Simtek Corporation

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STK14C88-3N45

32K x 8 AutoStore™nvSRAM QuantumTrap™ CMOS Nonvolatile Static RAM

Simtek Corporation 

STK14C88-3

AutoStore™/POWER-UP RECALL

(VCC = 3.0V-3.6V)e

SYMBOLS

NO.

Standard

Alternate

PARAMETER

STK14C88-3

MIN MAX

UNITS NOTES

27

tRESTORE

28

tSTORE

tHLHZ

29

tVSBL

30

tDELAY

tBLQZ

31

VSWITCH

32

VRESET

Power-up RECALL Duration

STORE Cycle Duration

Low Voltage Trigger (VSWITCH) to HSB Low

Time Allowed to Complete SRAM Cycle

Low Voltage Trigger Level

Low Voltage Reset Level

550

µs

p

10

ms

n, q

300

ns

l

1

µs

n

2.7

2.95

V

2.4

V

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

Note q: HSB is asserted low for 1µs when VCAP drops through VSWITCH. If an SRAM WRITE has not taken place since the last nonvolatile cycle, HSB

will be released and no STORE will take place.

AutoStore™/POWER-UP RECALL

VCC

31

VSWITCH

32

VRESET

AutoStore™

POWER-UP RECALL

HSB

27

tRESTORE

W

DQ (DATA OUT)

29

tVSBL

30

tDELAY

28

tSTORE

POWER-UP

RECALL

BROWN OUT

NO STORE

(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

November 2003

6 Document Control # ML0015 rev 0.3

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