X40421 Key Features
- Battery Switch Backup
- VOUT: 5mA to 50mA from VCC; or 250µA from VBATT
- Fault detection register
- Selectable power-on reset timeout (0.05s, 0.2s, 0.4s, 0.8s)
- Selectable watchdog timer interval (25ms, 200ms, 1.4s, off)
- Debounced manual reset input
- Low power CMOS -25µA typical standby current, watchdog on -6µA typical standby current, watchdog off -1µA typical batter
- 4Kbits of EEPROM -16 byte page write mode -Self-timed write cycle -5ms write cycle time (typical)
- Built-in inadvertent write protection -Power-up/power-down protection circuitry -Block lock protect 0 or 1/2, of EEPROM
- 400kHz 2-wire interface
