Voltage Supervisor With I²C Serial CMOS EEPROM, Precision Reset Controller And Watchdog Timer

The CAT1161 CAT1162 is a complete memory and supervisory solution for microcontroller-based systems. A serial EEPROM memory (16K) with hardware memory write protection, a system power supervisor with brown out protection and a watchdog Timer are integrated together in low power CMOS technology. Memory Interface is via an IC bus.
The 1.6-second watchdog circuit returns a system to a known good state if a software or hardware glitch halts or hangs the system. The CAT1161 watchdo monitors the SDA line, making an additional PC board trace unnecessary. The lower cost CAT1162 does not have a watchdog Timer By Catalyst Semiconductor