PT7M7803/7809-7812/7823-7825 P Supervisor Circuits Features Description Precision supply-voltage monitor The PT7M78xx family microprocessor ( P) supervisory - 4.63V (PT7M78xxL) circuits are targeted to improve reliability and accuracy - 4.38V (PT7M78xxM) of power-supply circuitry in P systems. These devices - 3.08V (PT7M78xxT) reduce the complexity and number of components - 2.93V (PT7M78xxS) required to monitor power-supply and battery functions. - 2.63V (PT7M78xxR) The main functions are: - 2.32V (PT7M78xxZ) 1. Asserting reset output during power-up, power- - 2.20V (PT7M78xxY) down and brownout conditions for P system. - 4.00V (PT7M78xxJ) - 2.25V (PT7M78xxK) 2. Watchdog functions - 2.80V (PT7M78xxG) 3. Manual reset. 200ms reset pulse width Debounced CMOS-compatible manual-reset input (7811, 7812, 7823, 7825) Applications Reset Output Signal for Watchdog and Power Abnormal, Manual Reset Power-supply circuitry in P systems Reset Push-Pull output (PT7M7809,7811,7823, Networking 7824,7825) Security System Reset Open-Drain output (PT7M7803) Server/Storage Voltage monitor for power-fail or low battery Embedded System warning Guaranteed RESET/RESET valid at V =1.0V CC Function Comparison Table RESET output Manual Reset Watchdog RESET output Part No. (push-pull) Input Input Push-Pull Open-Drain 1 PT7M7803 - - - - 2 PT7M7809 - - - - 3 PT7M7810 - - - - 4 PT7M7811 - - - 5 PT7M7812 - - - 6 PT7M7823 - - 7 PT7M7824 - - 8 PT7M7825 - - All trademarks are property of their respective owners. www.diodes.com 5/10/2017 2017-04-0010 PT0109-24 1 PT7M7803/7809-7812/7823-7825 Pin Configuration SOT23-3/SC70-3 SOT143-4 PT7M7803 PT7M7812 PT7M7811 PT7M7809 PT7M7810 1 GND 1 GND 1 4 1 GND 4 GND V CC V CC V CC 3 V CC 3 2 2 3 2 3 RESET 2 RESET RESET MR RESET MR SOT23-5 PT7M7812 PT7M7811 5 1 5 GND V CC 1 GND V CC 2 NC 2 NC 4 3 4 RESET MR 3 RESET MR PT7M7823 PT7M7824 PT7M7825 1 5 5 1 5 RESET 1 RESET V CC RESET V CC V CC 2 GND 2 GND 2 GND 3 4 4 3 4 3 MR WDI WDI RESET RESET MR Pin Description All trademarks are property of their respective owners. www.diodes.com 5/10/2017 2017-04-0010 PT0109-24 2