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...

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