BQ3285_15 Datasheet, PDF (20/26 Pages) Texas Instruments – Real-Time Clock (RTC)

bq3285
Data Sheet Revision History
Change
No.
1
1
1
2
3
3
3
4
5
Page
No.
2
11
12
3, 12
12
12
12
1, 8, 20
1, 8, 20
Description
Address strobe input
Backup cell voltage V_BC
Power-fail detect voltage V_PFD
crystal type Daiwa DT - 26 (not DT-26S)
Changed value in first table
Changed value in first table
Changed values for conditions of I_RCL, I_MOTH
PLCC last time buy and Reg A update
PLCC package option removed
Note:
Change 1 = Nov. 1992 B changes from June 1991 A.
Change 2 = Nov. 1993 C changes from Nov. 1992 B
Change 3 = Sept. 1996 D changes from Nov. 1993 C
Change 4 = Jan. 1999 E changes from Sept. 1996 D
Change 5 = May 2004 (SLUS028A) changes from Jan. 1999 E
Nature of Change
Clarification
Was 2.0 min; is 2.5 min
Was 4.1 min, 4.25 max; in 4.0 mi, 4.35 max
Clarification
I_RCL max. was 275; is now 185
I_MOTH max. was - 275; is now - 185
Was 20K; is now 30K
Reg A labeling corrected
PLCC reached end of Last Time Buy
20