M48T58 - 64 Kbit (8 Kb x 8) TIMEKEEPER SRAM
M48T58 Features
* Integrated, ultra low power SRAM, real-time clock, power-fail control circuit and battery
* BYTEWIDE™ RAM-like clock access
* BCD coded year, month, day, date, hours, minutes, and seconds
* Frequency test output for real-time clock
* Automatic power-fail chip deselect and WRITE
