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The PT7A7611-7615/7621-7625/7631-7635 family micro-processor (μP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in μP’s systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions.
The main functions are: 1. Asserting reset output during power-up, power-down and brownout conditions for μP system. 2. Detecting power failure or low-battery conditions with a 1.25V threshold detector. 3. Watchdog functions (not for PT7A7631-7635).
Precision Supply-voltage Monitor
200ms Reset Pulse Width
Debounced TTL/CMOS-compatible Manual-reset Input
Independent Watchdog Timer 1.6sec Time-out (Not Available for PT7A7631-7635)
Voltage Monitor for Power-fail or Low Battery Warning