STMICROELECTRONICS M41ST85Y/M41ST85W Serial RTC NVRAM Supervisor handbook
This document describes the features and characteristics of the M41ST85Y and M41ST85W products. The products support 5.0V or 3.0V operating voltage and have a 512-bit (64 x 8) serial RTC and NVRAM supervisor. The products are optimized for minimal interconnect to MCU and have a 2.5 to 5.5V oscillator operating voltage. Additionally, the products have features such as automatic switch-over and deselect circuitry, choice of power-fail deselect voltages, programmable alarm and interrupt function, watchdog timer, microprocessor power-on reset, battery low flag, power-down timestamp, etc.
