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TC32MCZB Datasheet(PDF) 6 Page - Microchip Technology |
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TC32MCZB Datasheet(HTML) 6 Page - Microchip Technology |
6 / 14 page TC32M DS21402D-page 6 2001-2012 Microchip Technology Inc. 3.4 External Override Reset Control A built-in debounce circuit allows a push-button switch (PB) or other electronic signal to be wire-ORed to this pin as an external Reset override control. The external Reset is required to be an active low signal. Internally, this input is timed to provide a minimum Reset pulse width of 500 msec. Reference Figure . t FIGURE 3-2: RS Pulled Low By Push- Button Reset FIGURE 3-3: Power-Up/Down Reset Timing 3.5 Supply Monitor Noise Sensitivity The TC32M is optimized for fast response to negative- going changes in VDD. Systems with an inordinate amount of electrical noise on VDD (such as systems using relays), may require a 0.01 F bypass capacitor to reduce detection sensitivity. This capacitor should be installed as close to the TC32M as possible to keep the capacitor lead length short. FIGURE 3-4: TC32M Hardware Connections (R1, R2 Chosen To Meet V STH, VSTL) PB Closed PB Open RS VIH tRST VIL RS VIL VIH VDD VRST tRST tRPD 5V 5V Reset PO.1 Reset Microcontroller Microprocessor R2,10 k Ω Microcontroller Example Reset Decoder Address Reset R1, 10 k Ω Microprocessor Example RS TC32M RS TC32M R1, 10 k Ω R2, 10 k Ω |
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Similar Description - TC32MCZB |
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