I have a few PIC16C57C ICs already mounted to boards that mistakenly were not programmed before mounted. Attaching wires to each lead of the IC and soldering them to header then attempting to program failed our to a program error not open pin so that tells me my connections were good. I also confirmed the IC can properly program by connecting it directly to the programmers headers. However, why do do think they cannot be programmed when already mounted to the boards.
To assist with this issue, I also tried to solder wires directly to a loose IC (not soldered to a board) which also failed.
Is there not enough current to initiate the programming or is data being lost due length of the wires. I’m trying to understand why this will not work.
To assist with this issue, I also tried to solder wires directly to a loose IC (not soldered to a board) which also failed.
Is there not enough current to initiate the programming or is data being lost due length of the wires. I’m trying to understand why this will not work.