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Hello Everyone. I have a PCB with a 12F629 plugged into an 8-pin IC socket on it. All GPIO's are tied to VSS (ground) through a 47K resistor network. At this point there are no other connections to the ports and all 8 pins are readily accessable with an 8-pin connector. Is there an easy way to program the chip with my HEX file without having to remove it from the socket, put it into the programmer & then replacing it into the socket? Thank you.
hi,
of course you can do it in circuit have a look here
http://microengineeringlabs.com/support/icsp.htm
next step for you is to get the exact pin # of your chip PGD,PGC,MCLR,VSS and to jump them to your favorite programer with a header. Once it is program, remove header.
Usually i use DIP socket on the programmer + flat cable + male header to insert/remove on Proto-Board.
The only thing you have to be aware of is the load on PGD,PGC when programming... must be close to open load. usually i use them for push button.
regards