M48T513Y M48T513V
3.3V-5V 4 Mbit (512Kb x8) TIMEKEEPER® SRAM
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INTEGRATED ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT, BATTERY, and CRYSTAL YEAR 2000 COMPLIANT BCD CODED CENTURY, YEAR, MONTH, DAY, DATE, HOURS, MINUTES, and SECONDS BATTERY LOW WARNING FLAG AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION TWO WRITE PROTECT VOLTAGE...