On Fri, 16 Jan 1998 11:25:32 +1100 Peter Homann writes: >Thanks Andy. From what you have said, can presume there is no internal >pullup on the MCLR line? A few of the newer PICs may have it or an option for it but most (including F84) don't, so a resistor to Vdd is required. Microchip may have been thinking that some applications would save power by holding MCLR low, stopping the PIC completely. (Does this also stop the WDT, saving additional power over using the sleep mode?) If a pull-up were on the MCLR line it would waste power in this case.