M48T37Y - 256 Kbit (32 Kbit x 8) TIMEKEEPER SRAM
M48T37Y Features
* Integrated ultra low power SRAM, real-time clock, power-fail control circuit, and battery
* Frequency test output for real-time clock software calibration
* Automatic power-fail chip deselect and WRITE protection
* Watchdog timer
* WRITE protect voltage (VPFD = Power-fail desel
