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ASM1834DF Datasheet(PDF) 2 Page - Alliance Semiconductor Corporation |
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ASM1834DF Datasheet(HTML) 2 Page - Alliance Semiconductor Corporation |
2 / 10 page ASM1834/A/D 2 of 10 Notice: The information in this document is subject to change without notice Dual 5V and 3.3V µP Power Supply Supervisor with Manual Reset rev 1.3 April 2005 Block Diagram Pin Configuration Pin Description Pin # Pin Name Function 1 5VIN 5V power supply input. 2 5V RESET 5V RESET 5V reset output (Active LOW, ASM1834, ASM1834A. Open drain outputs for ASM1834A). 5V reset output (Active HIGH, AS1834D). 35V TOL 5V input tolerance select: 10% tolerance for 5VTOL= 5VIN and 5% tolerance for 5VTOL = GND 4 GND Ground. 5 PBRST Debounced manual pushbutton reset input (40k Ω internal pull-up). 63.3V TOL 3.3V input tolerance select: 20% tolerance for 3.3VTOL = 3.3VIN and 10% tolerance for 3.3VTOL=GND. 7 3.3V RESET 3.3V RESET 3.3V reset output (Active LOW, ASM1834, ASM1834A. Open drain outputs for ASM1834A). 3.3V reset output (Active HIGH, AS1834D). 8 3.3VIN 3.3V power supply input. 1 2 3 4 5 6 7 8 5VIN 5V RESET * 5V TOL GND 3.3VIN 3.3V RESET * PBRST 3.3V TOL ASM1834 ASM1834A ASM1834D * AS1834D reset outputs are active HIGH (5V RESET and 3.3V RESET) Outputs are open-drain for AS1834A. 5V Tolerance Bias Low TC 3.3V Tolerance Pushbutton Level For ASM1834D 350ms Delay 5 VIN 5 VTOL PBRST 3.3 VIN 3.3 VTOL GND 3.3V RESET 3.3V RESET (ASM1834D) 5V RESET 5V RESET ASM1834 350ms Delay Reference Bias Sense and Debounce For ASM1834D - + - ASM1834A 5V RESET 3.3V RESET 40k Ω (ASM1834D) + 1 3 5 8 6 4 7 2 2 7 |
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