7

Nov. 1993 C

bq4287

Data Sheet Revision History

Change

Page No.

Description

Nature of Change

1

2

Power-fail detect voltage VPFD

Was 4.1 min, 4.25 max;

is 4.0 min, 4.35 max

1

2

Chip enable input current

Additional specification

29

Was: “As shipped from Benchmarq, the backup

cell is electrically isolated from the memory.”

Is: “As shipped from Benchmarq, the backup cell

is electrically isolated from the active circuitry.”

Clarification

2

14

Clarification; these parameters

are not supported by the

bq4287

Notes:

Change 1 = Nov. 1992 B changes from June 1991 A.

Change 2 = Nov. 1993 C changes from Nov. 1992 B.

Ordering Information

bq4287 MT -

Package Option:

MT = T-type module

Device:

bq4287 Real-Time Clock Module With NVRAM Control

Temperature:

blank = Commercial (0 to +70°C)