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M48T251Y - 5.0 or 3.3V / 4096K TIMEKEEPER SRAM with PHANTOM

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Datasheet Details

Part number M48T251Y
Manufacturer STMicroelectronics
File Size 307.60 KB
Description 5.0 or 3.3V / 4096K TIMEKEEPER SRAM with PHANTOM
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M48T251Y M48T251V 5.0 or 3.3V, 4096K TIMEKEEPER® SRAM with PHANTOM FEATURES SUMMARY s 5.0V OR 3.3V OPERATING VOLTAGE s 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 DESELECT CIRCUITRY CHOICE OF POWER-FAIL DESELECT VOLTAGES: (VPFD = Power-fail Deselect Voltage): – M48T251Y: 4.25V ≤ VPFD ≤ 4.50V – M48T251V: 2.80V s s 32 1 s PMDIP32 (PM) ≤ VPFD ≤ 2.97V s s 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 s s March 2003 Rev. 2.
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