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AME8502 Datasheet(PDF) 1 Page - Analog Microelectronics |
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AME8502 Datasheet(HTML) 1 Page - Analog Microelectronics |
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1 / 20 page  AME 1 AME8502 Rev. A.01 µµµµµProcessor Supervisory n General Description The AME8502 family allows the user to customize the CPU reset function without any external components. The user has a large choice of reset voltage thresholds, reset time intervals, and output driver configurations, all of which are preset at the factory. Each wafer is trimmed to the customers specicications. There circuits monitor the power supply voltage of µP based system. When the power supply voltage drops below the voltage threshold a reset is asserted immedi- ately (within an interval T D1). The reset remains asserted after the supply voltage rises above the voltage threshold for a time interval, T D2. The reset output may be either active high (RESET) or active low (RESETB). The reset output may be configured as push-pull. The state of the reset output is guaranteed to be correct for supply volt- ages greater than 0.9V. n Features n Application l Portable Electronics l Power Supplies l Computer Peripherals l Data Acquisition Systems l Applicatiions using CPUs l Consumer Electronics l Internally Fixed Threshold 1.2V to 4.5V in 0.1V Step l High Accuracy 1.5% l Low Supply Current 3 µA l No External Components Required l Quick Reset within 20 µs l Built-in Recovery Delay Include 0ms, 55ms, 220ms, 450ms l Low Functional Supply Voltage 0.9V l Push-Pull Output l Small SOT-23, TSOT-23A, SOT-143, SC-70-4, SOT-25 and TSOT-25A Package l RoHS Compliant and Halogen Free n Typical Application ± n Functional Block Diagram VIN GND RESET / RESETB Processor VIN RESET Input GND GND Delay VIN R1 R2 I1 VREF P1 N1 RESET/ RESETB |
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