M41ST87W - 5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor
M41ST87W Features
* 5.0, 3.3, or 3.0 V operation 400 kHz I2C bus NVRAM supervisor to non-volatize external LPSRAM 2.5 to 5.5 V oscillator operating voltage Automatic switchover and deselect circuitry Choice of power-fail deselect voltages
* M41ST87Y: THS = 1: VPFD≈ 4.63 V; V
