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AME8501BEFVBE42 Datasheet(PDF) 1 Page - Analog Microelectronics |
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AME8501BEFVBE42 Datasheet(HTML) 1 Page - Analog Microelectronics |
1 / 14 page AME, Inc. 1 AME8500 / 8501 µµµµµProcessor Supervisory l Small packages: SOT-23, SOT-89 l 11 voltage threshold options l Tight voltage threshold tolerance ---±1.50% l 5 reset interval options l 4 output configuration options l Wide temperature range -------- -40oC to 85oC l Low temperature coefficient --- 100ppm/oC(max) l Low quiescent current < 3.0µA l Thermal shutdown option (AME8501) The AME8500 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 customer's specifications. These circuits monitor the power supply voltage of µP based systems. 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 either push/pull or open drain. The state of the reset output is guaranteed to be correct for supply voltages greater than 1V. The AME8501 includes all the above functionality plus an overtemperature shutdown function. When the ambi- ent temperature exceeds 80 oC a reset is asserted and remains asserted until the temperature falls below 60 oC. Space saving SOT23 packages and micropower qui- escent current (<3.0 µA) make this family a natural for portable battery powered equipment. n General Description n Features n Typical Operating Circuit Note: * External pull-up resistor is required if open- drain output is used. 10 k Ω is recommended. n Block Diagram l Portable electronics l Power supplies l Computer peripherals l Data acquisition systems l Applications using CPUs l Consumer electronics n Applications AME8500 with Push-Pull RESET RESET V DD GND R1 R2 I1 V REF P1 N1 Delay V DD GND R1 R2 I1 V REF P1 N1 RESET Delay AME8500 with Push-Pull RESET Processor V CC GND RESET Input AME8500 V CC GND RESET / RESET 2 3 * |
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