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| Micro Controllers Discuss all aspects of micro controllers - building them, coding them, etc. All controllers are welcome - PIC, BASIC, Z8 Encore!, etc. |
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30th September 2007, 09:47 PM
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 12F629 12v/24v input Hi, I need an input pin to detect 12/24v but i'm trying to keep parts to a min. If i fed that straight in would it be ok or should I use a zener regulator or a transistor switch and enable WPU on that port? Thanks.... | |
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30th September 2007, 09:54 PM
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| Ensure the pin you're using has a protection diode, and then just use a resistor to feed the pin - choose the resistor to only supply something like 1mA or less. 10K for 12V or 22K for 24V should be fine. | |
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30th September 2007, 09:56 PM
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| thanks i will give it a go | |
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