M48T248VPM View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M48T248VPM

5.0 or 3.3V, 1024K TIMEKEEPER® SRAM with PHANTOM

STMicroelectronics 

M48T248Y

M48T248V

5.0 or 3.3V, 1024K TIMEKEEPER® SRAM with PHANTOM

FEATURES SUMMARY

■ 5.0V OR 3.3V OPERATING VOLTAGE

Figure 1. 32-pin, DIP Package

■ REAL TIME CLOCK KEEPS TRACK OF

TENTHS/HUNDREDTHS OF SECONDS,

SECONDS, MINUTES, HOURS, DAYS,

DATE OF THE MONTH, MONTHS, AND

YEARS

■ AUTOMATIC LEAP YEAR CORRECTION

VALID UP TO THE YEAR 2100

) ■ AUTOMATIC SWITCH-OVER AND

t(s DESELECT CIRCUITRY

■ CHOICE OF POWER-FAIL DESELECT

uc VOLTAGES:

d (VPFD = Power-fail Deselect Voltage):

ro – M48T248Y: 4.25V ≤ VPFD ≤ 4.50V

P – M48T248V: 2.80V ≤ VPFD ≤ 2.97V

te ■ FULL 10% VCC OPERATING RANGE

le ■ OVER 10 YEARS’ DATA RETENTION IN

THE ABSENCE OF POWER

so ■ WATCH FUNCTION IS TRANSPARENT TO

b RAM OPERATION

O ■ 128K x 8 NV SRAM DIRECTLY REPLACES

Obsolete Product(s) - VOLATILE STATIC RAM OR EEPROM

32

1

PMDIP32 (PM)

February 2005

1/24

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