Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
You need to exert 13V onto the MCLR pin to kick it into programming mode. I think there are several designs that use a 555 to generate the required voltage. But this method may fail on some of the "hardier" PICs like the 8720.
I use an ICD1 programmer connected to my circuit thru ICSP. The programmer usually needs to be powered, but I usually just power it thru the ICSP connector, since my circuit has to be powered anyway no matter what.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
