I’ve been looking into making my ow ICSP board. The reason I want to venture into making my own in cause I want one board that I can use with both ATMEL and PIC chips while just changing the positions of a header.
Now that I got the Atmel side on the go, i started working on the PIC side. I so an interesting design and I went ahead and built it on a protoboard and it worked. However, now that I look at the schematic, I have no idea why it worked.
The schematic is below:
What I don’t understand is the CTS connection. The Prog Data pin can handle a max of 5.3V, but doesn’t the RS232 work at 12V? Wouldn’t this destroy my chip? When does CTS normally go on? Would CTS ever go high in this design?
I know, this is not completely Arduino related (thought I plan on usnig this to bootload Arduino designs and work on the Pinguino project), but I really didn’t know where else to turn.