[picsig] Help needed with MCLR reset

[David VanHorn]

At 05:48 PM 7/19/2004 +1000, Andrew Rich wrote:

>Howdy,
>
>Having problems getting the PIC to clean reset.
>
>I have MCLR enabled and held high with a 10k resistor. I sink it to gnd
>using a button.
>
>Ideas ? Seems to lock up and not reset well

1: not much pullup, 4.7k would be safer, or even 1k.
2: contact bounce. Add a 0.1uF cap across the switch, located at the micro.
3: EMI/ESD pickup on the wire, add 100-1kohm in series with the lead to the switch.