M48T251VPM View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M48T251VPM

5.0 or 3.3V, 4096K TIMEKEEPER® SRAM with PHANTOM

STMicroelectronics 

M48T251Y

M48T251V

5.0 or 3.3V, 4096K TIMEKEEPER® SRAM with PHANTOM

FEATURES SUMMARY

■ 5.0V OR 3.3V OPERATING VOLTAGE

■ 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

DESELECT CIRCUITRY

■ CHOICE OF POWER-FAIL DESELECT

VOLTAGES:

(VPFD = Power-fail Deselect Voltage):

– M48T251Y: 4.25V ≤ VPFD ≤ 4.50V

– M48T251V: 2.80V ≤ VPFD ≤ 2.97V

■ FULL 10% VCC OPERATING RANGE

■ OVER 10 YEARS’ DATA RETENTION IN

THE ABSENCE OF POWER

■ WATCH FUNCTION IS TRANSPARENT TO

RAM OPERATION

■ 512K x 8 NV SRAM DIRECTLY REPLACES

VOLATILE STATIC RAM OR EEPROM

Figure 1. 32-pin, DIP Package

32

1

PMDIP32 (PM)

February 2005

1/24

Share Link: