Was the cap there in the first place for POR considerations? And do you now have that problem (again)? Kevin Nicholas Irias wrote: > > Getting rid of the cap on MCLR did the trick. I havent had any errors > programming since I pulled it out. > > thanks for the help > > ----- Original Message ----- > From: "Nicholas Irias" > To: > Sent: Monday, April 09, 2001 10:29 AM > Subject: Re: [PIC]: ICSP w/ PIC16F877 > > > thanks. I'll try again with no cap and see it that does the trick. > > > > ----- Original Message ----- > > From: "Roman Black" > > To: > > Sent: Monday, April 09, 2001 9:58 AM > > Subject: Re: [PIC]: ICSP w/ PIC16F877 > > > > > > > Nicholas Irias wrote: > > > > > > > > More on the configuration: > > > > > > > > My programming leads are 22ga wire, about 18" (~1/2 meter) long. > > > > > > > > RB6 and 7 are used only for programming. > > > > > > > > RB3 is not used. I have tried leaving it floating and also tying it > to > > > > ground via a 1K resistor, but still get the same error message. > > > > > > > > I am not using the low voltage programming mode. > > > > > > > > MCLR has .01uF cap to ground. It is pulled up to Vcc via a 47K > resistor > > in > > > > series with a diode to allow MCLR to go to 13 volts for programming. > > > > > > > > > I think you have it there. You have a 470 ohm series > > > resistor and .01uF cap RC network. Bad. :o) > > > Try removing the cap totally (bst), or shorting > > > the resistor. > > > > > > Microchip are sketchy about the actual timing > > > the Picstart uses for MCLR (RESET->VPP) > > > and I think the program and verify timings are > > > different. You may be getting good programming > > > and bad verifying. Either way you need to mod > > > that cap so MCLR can get to VPP very quickly. > > > -Roman > > > > > > -- > > > http://www.piclist.com hint: The PICList is archived three different > > > ways. See http://www.piclist.com/#archives for details. > > > > > > > > > > -- > > http://www.piclist.com hint: The PICList is archived three different > > ways. See http://www.piclist.com/#archives for details. > > > > > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body