M4T28-BR12SH ST Microelectronics, M4T28-BR12SH Datasheet - Page 32

• Manufacturer Part Number: M4T28-BR12SH
• Description: TIMEKEEPER SNAPHAT Battery & Crystal
• Manufacturer: ST Microelectronics

M41ST85Y, M41ST85W
REVISION HISTORY
Table 20. Document Revision History
32/33
August 2000
01-May-02
24-Aug-00
18-Dec-00
07-Aug-01
20-Aug-01
06-Sep-01
03-Dec-01
15-Nov-02
25-Feb-03
18-Jun-01
22-Jun-01
24-Jan-03
12-Oct-00
26-Jul-01
03-Jul-02
Date
Rev. #
1.0
1.1
1.2
2.0
2.1
2.2
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
4.0
First issue
Block Diagram added (Figure 3)
t
Reformatted, TOC added, and PFI Input Leakage Current added (Table 5)
Addition of t
graphic (see Figure 6); change to DC and AC Characteristics, Order Information (Tables 5,
6, 14); note added to “Setting Alarm Clock Registers” section; added temp./voltage info. to
tables (Table 4, 5, 6, 6, 7); addition of Default Values (Table 13)
Note added to Clock Operation section
Change in Product Maturity
Improve text in “Setting the Alarm Clock” section
Change V
DC Characteristics V
added; and Crystal Electrical Characteristics table removed (Tables 5, 6)
Changed READ/WRITE Mode Sequences (Figure 14, 16); change in V
5V (M41ST85Y) part only (Table 5, 14)
Change t
Modify DC Characteristics table footnote, Default Values (Tables 5, 13)
Added embedded crystal (MX) package option; corrected initial power-up condition (Figure
2, 3, 5, 6, 7, 26, Table 1, 13, 14, 19)
Update diagrams (Figure 6, 7, 26); update values (Table 7, 11, 12, 13, 19)
New Si changes (Table 7, 11, 12); corrected dimensions (Figure 26; Table 19)
REC
Table removed, cross references corrected
REC
PFD
REC
Definition (Table 12); modify reflow time and temperature footnote (Table 2)
values in document
information, table changed, one added (Tables 8, 12); changed PFI/PFO
BAT
changed; V
Revision Details
OHB
changed; PFI Hysteresis (PFI Rising) spec.
PFD
lower limit for