M4T28-BR12SH Datasheet | STMicroelectronics

M4T28-BR12SH M4T32-BR12SH Real-time clock and TIMEKEEPER® SNAPHAT® battery with crystal Datasheet - production data SNAPHAT® battery with crystal 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. 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 April 2025 This is information on a product in full production. DS5067 Rev 5 1/16 .st. Contents Contents M4T28-BR12SH, M4T32-BR12SH 1 Device overview - -...