PT7A7634S-13

PT7A7611-7615/7621-7625/7631-7635 μP Supervisor Circuits Description Pin Assignments NEW PRODUCT 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. (Top View) 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  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   Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3)      Notes: RESET 1 8 WDI WDO 2 7 PFO WDI MR 3 6 PFI PFO VCC 4 5 GND MR 1 8 WDO VCC 2 7 RESET GND 3 6 PFI 4 5 MSOP-8 SO-8 PT7A7611-7615 (Top View) Features  (Top View) (Top View) RESET 1 8 WDI WDO 2 7 PFO WDI MR 3 6 PFI PFO VCC 4 5 GND MR 1 8 WDO VCC 2 7 RESET GND 3 6 PFI 4 5 MSOP-8 SO-8 PT7A7621-7625 (Top View) (Top View) 1 8 NC RESET 2 7 PFO NC MR 3 6 PFI PFO VCC 4 5 GND MR 1 8 RESET VCC 2 7 RESET GND 3 6 PFI 4 5 RESET MSOP-8 SO-8 PT7A7631-7635 Applications      Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable/Battery Powered Equipment 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain