Catalog
Micro-processor (μP) Supervisory Circuits
Key Features
• Precision Supply-voltage Monitor
• 4.63V (PT7A7611/7621/7631)
• 4.38V (PT7A7612/7622/7632)
• 3.08V (PT7A7613/7623/7633)
• 2.93V (PT7A7614/7624/7634)
• 2.63V (PT7A7615/7625/7635)
• 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
• Reset Output Signal:
• Active-low Only (PT7A7611-7615)
• Active-high Only (PT7A7621-7625)
• Active-high and Active-low (PT7A7631-7635)
• Guaranteed RESET/RESET Valid at VCC = 1V
Description
AI
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.