m41t256y STMicroelectronics, m41t256y Datasheet - Page 29

• Manufacturer Part Number: m41t256y
• Description: 256 Kbit 32k X8 Serial Rtc
• Manufacturer: STMicroelectronics

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