Would this ICSP design work?
Thanks! 8)
Your MCLR line should be ok, but you might have a problem with the data lines, having resistors tied to it during programming. These may act as pull-ups or pull-downs and “corrupt” the programming data. I have seen this on my own designs, so I have made it a habit to add SMT solder jumper pads between the PIC’s ICSP pins and the rest of the circuit. I do not bother doing this on the MCLR line, I just tie the MCLR line of the ICSP header directly to that pin on the PIC ie. between the pic and the MCLR pull-up resistor.
Once I am done programming, I come back and solder bridges over these jumpers to cut the isolation from the PIC and tie it back to the circuit.
That’s one of the weirdest looking schematics I’ve ever seen!
Yep, it is a weird looking but all connections are shown.
dmcmulle,
Diode D3 should be between the 10K Ohm resistor and MCLR/Vpp on pin 4. Recheck Figure 3-1in the PICKit2 User Guide.
Other wise it looks ok.
It is possible to have the issues rpcelectronics mention but that depends on what the other circuit elements are.