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PT7A7525 Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation |
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PT7A7525 Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation |
1 / 9 page ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| μP Supervisor Circuits 12-07-0002 PT0082-7 07/05/12 1 PT7A7511-15/7521-25/7531-35 Features Precision supply-voltage monitor - 4.63V (PT7A7511, 7521, 7531) - 4.38V (PT7A7512, 7522, 7532) - 3.08V (PT7A7513, 7523, 7533) - 2.93V (PT7A7514, 7524, 7534) - 2.63V (PT7A7515, 7525, 7535) 200ms reset pulse width Debounced TTL/CMOS-compatible manual- reset input Independent watchdog timer 1.6sec time-out (not available for PT7A7531 - 7535) Reset output signal: - Active-low only (PT7A7511 - 7515) - Active-high only (PT7A7521 - 7525) - Active-high and active-low (PT7A7531 - 7535) Voltage monitor for power-fail or low battery warning Guaranteed RESET/RESET valid at VCC=1.2V Description The PT7A751X/752X/753X family micro- processor (P) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in P’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 P system. 2. Detecting power failure or low-battery conditions with a 1.25V threshold detector. 3. Watchdog functions (not for PT7A753x) Application Power-supply circuitry in P systems Pin Configuration Top View 1 2 3 4 8 7 6 5 MR V CC GND PFI WDO RESET WDI PFO PT7A7511P-7515P PT7A7511W-7515W 8-Pin PDIP/8-Pin SOIC 1 2 3 4 8 7 6 5 MR V CC GND PFI WDO RESET WDI PFO PT7A7521P-7525P PT7A7521W-7525W 8-Pin PDIP/8-Pin SOIC 1 2 3 4 8 7 6 5 MR V CC GND PFI RESET RESET NC PFO PT7A7531P-7535P PT7A7531W-7535W 8-Pin PDIP/8-Pin SOIC |
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