X40421 - Xicor

X40421 (X40420 / X40421) Dual Voltage Monitor

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. Applying voltage to VCC activates the power on reset circuit which holds RES.

Features

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• Monitor Voltages: 5V to 1.6V Memory Security Battery Switch Backup VOUT 5mA to 50mA Preliminary Datasheet 4kbit EEPROM X40420/X40421 APPLICATIONS
• Communications Equipment —Routers, Hubs, Switches —Disk arrays
• Industrial Systems —Process Control —Intelligent Instrumentation
• Computer Systems —Desktop Computers —Network Servers X40420/21 Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch 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 —Adj.