> Having just brushed up on my knowledge of the MCLR input, > I'm now worried that I should have implemented an RC reset > in my last PIC -based product rather than connecting it straight > to Vdd: there is a lot of capacitance on the 5V rail in that circuit. > Am I likely to run into trouble in practice? Comments? If you think that there will be voltage stored in the MCLR cap after Vcc has gone from the PIC then use a signal diode in parallel with the R (a to MCLR, k to Vcc) to discharge it. Causing MCLR to rise to Vcc after the Vcc pin itself is no bad thing, but you could leave out the C and use the R as a pull-up. A link (0R) is better as an R can allow Vcc glitches and noise through and possibly cause the PIC to reset > Never stop learning... Never stop aksing -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu