BQ4287 Datasheet, PDF (7/8 Pages) Texas Instruments – Real-Time Clock Module With NVRAM Control

bq4287
Data Sheet Revision History
Change
1
1
2
2
Page No.
2
2
9
14
Description
Nature of Change
Power-fail detect voltage VPFD
Was 4.1 min, 4.25 max;
is 4.0 min, 4.35 max
Chip enable input current
Additional specification
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
Deleted specifications for tRWH and tRWS
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 -
Temperature:
blank = Commercial (0 to +70°C)
Package Option:
MT = T-type module
Device:
bq4287 Real-Time Clock Module With NVRAM Control
Nov. 1993 C
7