M48T128Y - 1-Mbit SRAM
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5 2 Operation modes .
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7 2.1 READ mode .
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M48T128Y Features
* Integrated, ultra low power SRAM, real-time clock, power-fail control circuit, battery, and crystal )
* BCD coded year, month, day, date, hours, t(s minutes, and seconds c
* Automatic power-fail chip deselect and WRITE u protection rod
* WRITE protect voltage VCC = 4.5 to 5.5 V;
