M48T212V
3.3V TIMEKEEPER® supervisor
Features
■ Integrated real-time clock, power-fail control
circuit, battery and c...
M48T212V
3.3V TIMEKEEPER® supervisor
Features
■ Integrated real-time clock, power-fail control
circuit, battery and crystal
)■ Converts low power SRAM into NVRAMs t(s■ Year 2000 compliant (4-digit year) c■ Battery low flag du■ Microprocessor power-on reset ro■ Programmable alarm output active in the P )battery backed-up mode te t(s■ Watchdog timer ole uc■ Automatic power-fail chip deselect and WRITE s dprotection b ro■ WRITE protect
voltage O P(VPFD = Power-fail deselect
voltage): ) - te– M48T212V: VCC = 3.0 to 3.6V
t(s le2.7V ≤ VPFD ≤ 3.0V o■ Packaging includes a 44-lead SOIC and uc bsSNAPHAT® top (to be ordered separately) d O■ RoHS compliant OObbssoolleettee PPrrooduct(s) -– 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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Contents
Contents
M48T212V
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Operatio...
