M48T212VMH View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M48T212VMH

5.0V or 3.3V TIMEKEEPER® Supervisor

STMicroelectronics 

M48T212Y

M48T212V

5.0V or 3.3V TIMEKEEPER® Supervisor

FEATURES SUMMARY

■ 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

■ CHOICE OF WRITE PROTECT VOLTAGES

(VPFD = Power-fail Deselect Voltage):

– M48T212Y: VCC = 4.5 to 5.5V

4.2V ≤ VPFD ≤ 4.5V

– 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)

Figure 1. 44-pin SOIC Package

SNAPHAT (SH)

Crystal/Battery

44

1

SOH44 (MH)

April 2004

1/32

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