jonw0224 said:I think I messed up a PIC16F877A with my programmer. I was building a circuit mixed analog and digital that included a PIC16F877A. I powered up the circuit to test the analog part of the circuit on my breadboard, but at the same time powered up the PIC16F877A.
RB6, RB7, and MCLR were floating. I'm pretty sure RB3 was hooked to an input so it was floating also. Later, I couldn't program the chip.
The programmer I am using is a "Classic Tait" which I built. It still programs a PIC16F84A just fine. I have never programmed a PIC16F877A with my programmer before, but I was under the impression that it was programmed in the same way as the PIC16F84A (I'm using high voltage programming). Is that correct?
Could I have damaged the chip by floating the programming pins?
I'm probably going to buy another PIC16F877A just to make sure, but I wanted to see if any of you had any input...
hill said:You have to make sure that the programmer software you're using really supports A part. As far as I know, the A part uses different programming algorithm than non-A part.
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