STMicroelectronics M48T251Y
5.0 or 3.3V / 4096K TIMEKEEPER SRAM with PHANTOM
| Part No. | M48T251Y |
|---|---|
| Datasheet | M48T251Y Download |
| Manufacturer |  STMicroelectronics |
| Description | 5.0 or 3.3V / 4096K TIMEKEEPER SRAM with PHANTOM |
| Buy | Stock & Price |
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. 2.0 1/24 M48T251Y, M48T251V TABLE OF CONTENTS SUMMARYDESCRIPTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 2. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
