X40430 - Xicor

X40430 (X40430 / X40431) Triple Voltage Monitor

The X40430/31 combines power-on reset control, watchdog timer, supply voltage supervision, secondary and third voltage supervision, manual reset, and Block Lock™ protect serial EEPROM in one package. This combination lowers system cost, reduces board space requirements, and increases reliability. Applying voltage to VCC activates the power on reset circuit w.

Features

• Triple voltage detection and reset assertion —Three standard reset threshold settings (4.6V/2.9V/1.7V, 4.4V/2.6V/1.7V, 2.9V/1.7V/2.4V) —Adjust low voltage reset threshold voltages using special programming sequence —Reset signal valid to VCC = 1V —Monitor three voltages or detect power fail
• Fault detection register
• Selectable power on reset timeout
• Selectable watchdog timer interval
• Debounced manual reset input
• Low power CMOS —30µA typical standby current, watchdog on —10µA typical standby current, watchdog off
• 4Kbits of EEPROM —16 byte page write mode —Self-timed write cycle —5m.