GE IC697PWR720 protection device

GE IC697PWR720 protection device

Battery Backed Up RAM and Clock The MK48T08 RAM and clock chip is used on the MVME162. This chip provides a time of day clock, oscillator, crystal, power failure detection, memory write protection, 8KB of RAM, and a battery in one 28-pin package. The clock provides seconds, minutes, hours, day, date, month, and year in BCD 24-hour format. Corrections for 28- day, 29-day (leap year), and 30-day months are automatically made. No interrupts are generated by the clock. The MK48T08 is an 8 bit device; however, the interface provided by the MCchip supports 8- bit, 16-bit, and 32-bit accesses to the MK48T08. Refer to the MCchip description in the MVME162 Embedded Controller Programmer’s Reference Guide and to the MK48T08 data sheet for detailed programming and battery life information.

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