PT7M7342

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Data Sheet PT7M7803/7809-7812/7823-7825/7342-7345 µP Supervisor Circuits Discription The PT7M7xxx family microprocessor (µP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in µP 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; 4. Manual reset. Features Precision supply-voltage monitor - 4.63V (PT7M7xxxL) - 4.38V (PT7M7xxxM) - 3.08V (PT7M7xxxT) - 2.93V (PT7M7xxxS) - 2.63V (PT7M7xxxR) - 2.32V (PT7M7xxxZ) - 2.20V (PT7M7xxxY) - 4.00V (PT7M7xxxJ) 200ms reset pulse width Debounced CMOS-compatible manual-reset input (7811, 7812, 7823, 7825, 7342-7344) Reset Output Signal for Watchdog and Power Abnormal, Manual Reset Reset Push-Pull output (PT7M7809,7811,7823, 7824,7825,7342,7345) Reset Open-Drain output (PT7M7803/7343) Voltage monitor for power-fail or low battery warning Guaranteed RESET/RESET valid at VCC = 1.0V Applications Power-supply circuitry in µP syste...