Maxim max691 series microprocessor supervisor maxim max691cwe this microprocessor monitoring and control device is a supervisory component that provides a range of functions including reset after power up power down or brownouts battery backup switching for cmos ram cmos microprocessor or other low power logic a reset pulse from the watchdog timer and a 1 3v threshold detector for power fail warning low battery detection or to monitor a power supply other than 5v the device is suita