M48T212V_07 Datasheet, PDF (1/35 Pages) STMicroelectronics – 3.3V TIMEKEEPER supervisor

M48T212V
3.3V TIMEKEEPER^® supervisor
Features
■ Integrated real-time clock, power-fail control
circuit, battery and crystal
■ Converts low power SRAM into NVRAMs
■ Year 2000 compliant (4-digit year)
■ Battery low flag
■ Microprocessor power-on reset
■ Programmable alarm output active in the
battery backed-up mode
■ Watchdog timer
■ Automatic power-fail chip deselect and WRITE
protection
■ WRITE protect voltage
(V_PFD = Power-fail deselect voltage):
– M48T212V: V_CC = 3.0 to 3.6V
2.7V ≤ V_PFD ≤ 3.0V
■ Packaging includes a 44-lead SOIC and
SNAPHAT^® top (to be ordered separately)
■ RoHS compliant
– Lead-free second level interconnect
SNAPHAT (SH)
Crystal/battery
44
1
SOH44 (MH)
November 2007
Rev 7
1/35
www.st.com
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