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M48T248V Dataheets PDF



Part Number M48T248V
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description 5.0 or 3.3V / 1024K TIMEKEEPER SRAM
Datasheet M48T248V DatasheetM48T248V Datasheet (PDF)

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(sDESELECT CIRCUITRY ■ CHOICE OF POWER-FAIL DESELECT ucVOLTAGES: d(VPFD = Power-fail Deselect Voltage): ro– M48T248Y: 4.25V ≤ V.

  M48T248V   M48T248V


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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(sDESELECT CIRCUITRY ■ CHOICE OF POWER-FAIL DESELECT ucVOLTAGES: 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 bRAM 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 M48T248Y, M48T248V TABLE OF CONTENTS FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


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