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'[PIC]: reset button'
2002\01\21@112444 by Keith Christopher

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How do I set a push button reset on a 16f84 ?

Button to resistor to gnd hooked to pin 4 ?



Keith

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2002\01\21@120622 by Martin Peach

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Button between pin 4 and ground when pressed. Resistor to Vcc hooked to pin
4. Gives you a 'warm boot': your code will have to init registers like a
cold boot if you need that.
/\/\/\/*=Martin

{Original Message removed}

2002\01\22@043121 by Vasile Surducan

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button to gnd from MCLR, 10k to vcc from the same mclr


On Mon, 21 Jan 2002, Keith Christopher wrote:

{Quote hidden}

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2002\01\22@050115 by Jinx

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220 ohm current limiting resistor from MCLR first of all

From the free end of the 220R -

10k to Vcc

Button + 100R to 0V

10nF to 0V (ie in parallel with the button and the 100R)

The 10nF + 10k to Vcc provides some noise filtering and
also ensures that MCLR stays low for a short time after
Vcc goes high at power-up

You can also add a small diode in parallel with the 10k, with
the cathode (stripe end) to Vcc. This is a discharge path for
the 10nF at power-down

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