12F675 won't reprogram or erase

[Ron Marcus]

I just got a note back from MELabs stating that you can not reliably program the 12F675 when using both MCLR as an input and the internal oscillator.

I guess I will try making the MCLR as a reset pin later and see if another chip bites the dust.

I repeat...

<<If your code is evolving, you really should keep MCLR as a reset. The last programming action will be to flip the config fuse for the MCLR pin to become an input.>>

[Ron Marcus]

Let's try that again...

If your code is evolving, you really should keep MCLR as a reset. The last programming action will be to flip the config fuse for the MCLR pin to become an input.

[modifyit]

Ahh that could make some sense then...If the last thing the programer does is flip the MCLR to being an input, that is why it could be crashing the MELABS programmer and corrupting the chip, but the chip's program seems to run fine.

I will try using the MCLR as a reset and see what happens.

Thanks again

[modifyit]

Making the MCLR a reset did the trick. Thanks to all for your thoughts