M41T256Y_07 Datasheet, PDF (29/30 Pages) STMicroelectronics – 256Kbit (32K x 8) serial RTC

M41T256Y
8
Revision history
Revision history
Table 15. Document revision history
Date
Version
Revision Details
February 2002
26-Apr-02
31-May-02
03-Jul-02
12-Jul-02
29-Jul-02
20-Dec-02
04-Jan-03
26-Mar-03
15-Jun-04
16-Apr-2007
1.0 First Issue
1.1 Addition of “Tamper Event Time-Stamp” text
1.2
Add Sleep Mode, 44-pin with SNAPHAT package (Figure 2, 5, 19, 20;
Table 1, 5, 14, 15, 12, 13).
1.3 Modify Crystal Electrical Characteristics table footnotes (Table 9).
1.4
Added programmable Sleep Mode information to document (Figure 3, 4,
5, 6; Table 3, 4)
1.5 Add “Hatless” to package description (Figure 1,18) and Table 14, 11)
2.0
I_CC Characteristics changed (Table 8); Document promoted to
“Datasheet”
2.1 Add V_OL value (Table 8)
2.2 Update test condition (Table 10)
3.0
Reformatted; add Lead-free information; update characteristics (Figure
14; Table 5, 14)
Reformatted document. Updated packaging references that only 44-lead
4 SNAPHAT available (cover page, Summary, Figure 1, Table 1, Table 13).
Updated Table 9, 10.
09-Nov-2007
Added lead-free second level interconnect information to cover page and
5 Section 6: Package mechanical data; product status “Not for New
Design”; updated Table 13.
29/30