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M4T28-BR12ST11
M4T28-BR12SH M4T32-BR12SH Real-time clock and TIMEKEEPER® SNAPHAT® battery with crystal Datasheet - production data 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 Features Provides battery backup power for serial realtime 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 February 2014 This is information on a product in full production. DocID013125 Rev 4 1/16 www.st.com
STM
STMicroelectronics NV
スイス
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