X40421
Description
The X40420/21 bines power-on reset control, watchdog timer, supply voltage supervision, and secondary supervision, manual reset, and Block Lock™ protect serial EEPROM in one package.
Key Features
- Battery Switch Backup
- VOUT: 5mA to 50mA from VCC; or 250µA from VBATT
- Fault detection register
- Selectable watchdog timer interval (25ms, 200ms, 1.4s, off)
- Debounced manual reset input
- 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
- 2.7V to 5.5V power supply operation
- Available packages -14-lead SOIC, TSSOP
