M48T212VSH Просмотр технического описания (PDF) - STMicroelectronics

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M48T212VSH

3.3V TIMEKEEPER® supervisor

STMicroelectronics 

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

(VPFD = Power-fail deselect voltage):

– M48T212V: VCC = 3.0 to 3.6V

2.7V ≤ VPFD ≤ 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

1

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