The TL77xxA family of integrated-circuit supply-voltage supervisors is designed
specifically for use as reset controllers in microcomputer and microprocessor systems. The
supply-voltage supervisor monitors the supply for undervoltage conditions at the SENSE input.
During power up, the RESET output becomes active (low) when
VCC attains a value approaching 3.6 V. At this point (assuming that SENSE is
above VIT+), the delay timer function activates a time delay, after which
outputs RESET and RESET go inactive (high and low, respectively). When an
undervoltage condition occurs during normal operation, RESET and RESET go
active.