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M4T32-BR12SH6

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
This is information on a product in full production.
February 2014 DocID013125 Rev 4 1/16
M4T28-BR12SH
M4T32-BR12SH
Real-time clock and TIMEKEEPER
®
SNAPHAT
®
battery with crystal
Datasheet - production data
Features
Provides battery backup power for serial real-
time clock, non-volatile TIMEKEEPER
®
and
supervisor devices in the 28- or 44-pin
SNAPHAT
®
SOIC package
Removable battery avoids heat associated with
surface-mount process
Snaps directly onto surface-mounted
SNAPHAT SOIC
Choice of battery capacities
– M4T28-BR12SH = 48 mAh
– M4T32-BR12SH = 120 mAh
Keyed insertion to ensure proper assembly
Removable for replacement and proper
disposal
Pb-free package
Available in Ecopack
®
packages, tubes
Description
The M4Txx-BR12SH SNAPHAT
®
top is a
detachable lithium power source for ST’s serial
real-time clock and non-volatile TIMEKEEPER
®
surface-mount SOIC package (28- and 44-pin).
The SNAPHAT top contains both the battery and
crystal and is designed to be “snapped on” after
the SOIC is surface mounted on the PC board.
Thus the two-piece solution prevents the battery
and crystal from being exposed to the high
temperatures of the surface-mount process.
SNAPHAT
®
battery with crystal
www.st.com
Contents M4T28-BR12SH, M4T32-BR12SH
2/16 DocID013125 Rev 4
Contents
1 Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Mechanical information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Battery characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 UL recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Battery life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.4 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Environmental information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DocID013125 Rev 4 3/16
M4T28-BR12SH, M4T32-BR12SH List of tables
16
List of tables
Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Operating and AC measurement conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. SH – 4-pin SNAPHAT
®
housing for 48 mAh battery & crystal, package mechanical data . 11
Table 5. SH – 4-pin SNAPHAT
®
housing for 120 mAh battery & crystal,
package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 6. Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Table 7. Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

M4T32-BR12SH6

Mfr. #:
Buy M4T32-BR12SH6
Manufacturer:
STMicroelectronics
Description:
Battery Management Snaphat Batt & Cryst
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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