DS1254 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

MFG CO.

DS1254

2M x 8 NV SRAM with Phantom Clock

Maxim Integrated 

DS1254

BATTERY WARNING TIMING

(VCC = 3.3V 10%, TA = 0C to +70C)

PARAMETER

Battery Test Cycle

Battery Test Pulse Width

Battery Test to BW Active

VCC Valid to BW Valid

SYMBOL

tBTC

tBTPW

tBW

tBPU

MIN

TYP

MAX

UNITS NOTES

24

hour

1

seconds

1

seconds

1

seconds

3

AC TEST CONDITIONS

Output Load:

100pF + 1 TTL Gate

Input Pulse Levels: 0V to 3.0V

Timing Measurement Reference Levels:

Input: 1.5V

Output: 1.5V

Input Pulse Rise and Fall Times: 5ns

Figure 4. Memory Read Cycle Timing (Note 9)

ADDRESS

CE

OE

DQ0–DQ7

tRC

tACC

tCO

tOE

tCOE

tCOE

tOH

tOD

tOD

OUTPUT

DATA VALID

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