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ASM1834DSF Datasheet(PDF) 5 Page - PulseCore Semiconductor |
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ASM1834DSF Datasheet(HTML) 5 Page - PulseCore Semiconductor |
5 / 10 page 5 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 November 2006 ASM1834/A/D rev 1.5 Trip Point Tolerance Selection The 3.3VTOL and 5VTOL inputs allow independent selection of the reset trip points. If 5VTOL is connected to the 5V supply input, a 10% tolerance is selected. If 5VTOL is grounded, a 5% tolerance is selected. If 3.3VTOL is connected to the 3.3V supply input, a 20% tolerance is selected. If 3.3VTOL is grounded, a 10% tolerance is selected. (Refer table below). The 3.3VTOL and 5VTOL tolerance select inputs should be tied to the ground or to the respective input supply voltage pin, 3.3VIN or 5VIN. Tolerance Select 3.3V Input 5V Input 3.3V Tolerance TRIP Point (V) 5V Tolerance TRIP Point (V) MIN NOM MAX MIN NOM MAX 5VTOL = 5VIN - - - - 10% 4.25 4.38 4.49 5VTOL = GND - - - - 5% 4.5 4.63 4.75 3.3VTOL = 3.3VIN 20% 2.47 2.55 2.64 - - - - 3.3VTOL = GND 10% 2.80 2.88 2.97 - - - - 1 2 3 4 5 6 7 8 5VIN 5VRESET 3.3VRESET 5V or 3.3V 3.3VIN 5V TOL GND 3.3V TOL PBRST 3.3V ASM1834A 5V 10k Ω Figure 7: ASM1834A Wired “OR” Connection |
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