M48T201Y-85MH1(2004) Просмотр технического описания (PDF) - STMicroelectronics

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производитель

M48T201Y-85MH1
(Rev.:2004)

5.0 or 3.3V TIMEKEEPER® Supervisor

STMicroelectronics 

M48T201Y

M48T201V

5.0 or 3.3V TIMEKEEPER® Supervisor

FEATURES SUMMARY

■ CONVERTS LOW POWER SRAM INTO

NVRAMs

■ YEAR 2000 COMPLIANT

■ BATTERY LOW FLAG

■ INTEGRATED REAL TIME CLOCK, POWER-

FAIL CONTROL CIRCUIT, BATTERY AND

CRYSTAL

■ WATCHDOG TIMER

■ CHOICE OF WRITE PROTECT VOLTAGES

(VPFD = Power-fail Deselect Voltage):

– M48T201Y: VCC = 4.5 to 5.5V

4.1V ≤ VPFD ≤ 4.5V

– M48T201V: VCC = 3.0 to 3.6V

2.7V ≤ VPFD ≤ 3.0V

■ MICROPROCESSOR POWER-ON RESET

(Valid even during battery back-up mode.)

■ PROGRAMMABLE ALARM OUTPUT

ACTIVE IN THE BATTERY BACKED-UP

MODE

■ PACKAGING INCLUDES A 44-LEAD SOIC

AND SNAPHAT® TOP (to be ordered

separately)

■ SOIC PACKAGE PROVIDES DIRECT

CONNECTION FOR A SNAPHAT® TOP

WHICH CONTAINS THE BATTERY AND

CRYSTAL

Figure 1. Package

SNAPHAT (SH)

Crystal/Battery

44

1

SOH44 (MH)

44-pin SOIC

September 2004

1/33

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