The CAT1161/2 is a complete memory and supervisorysolution for microcontroller-based systems. A serialEEPROM memory (16K) with hardware memory writeprotection, a system power supervisor with brown outprotection and a watchdog timer are integrated togetherin low power CMOS technology. Memory interface is viaan I2C bus.The 1.6-second watchdog circuit returns a system to aknown good state if a software or hardware glitch haltsor “hangs” the system. The CAT1161 watchdog monitorsthe SDA line, making an additional PC board traceunnecessary. The lower cost CAT1162 does not have awatchdog timer.
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