Intersil X40421
The X40420/21 combines power-on reset control, watchdog timer, supply voltage supervision, and secondary supervision, manual reset, and Block Lock™ protect serial EEPROM in one package. This combination lowers system cost, reduces board space requirements, and increases reliability. This allows the power supply and system oscillator to stabilize before the processor can execute code.| Part No. | X40421 |
|---|---|
| Datasheet | X40421 Download |
| Manufacturer |  Intersil |
| Description | Dual Voltage Monitor |
| Buy | Stock & Price |
FEATURES
● Dual voltage detection and reset assertion —Three standard reset threshold settings (4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V) —VTRIP2 Programmable down to 0.9V —Adjust low voltage reset threshold voltages using special programming sequence —Reset signal valid to VCC = 1V —Monitor two voltages or detect power fail● 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 battery current in backup mode
● 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 ope...
