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'[PICLIST] Pic16c65a REWRITE A CODE..'
2001\09\18@124434 by Samuel Almachar

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Hi,

I have a PIC16C65A , with my programmer pro16, i can read the original code (cp not active), but a I can't blank or rewrite a new code on it.
Somebody know why? or how do it ?

Thanks

Samuel Almachar

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2001\09\18@131225 by Dale Botkin

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On Tue, 18 Sep 2001, Samuel Almachar wrote:

> I have a PIC16C65A , with my programmer pro16, i can read the original
> code (cp not active), but a I can't blank or rewrite a new code on it.
> Somebody know why? or how do it ?

Maybe because it's EPROM, not FLASH?  They're either the windowed JW
version (need a UV EPROM eraser to erase) or a plastic OTP -- One Time
Programmable.

Dale
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2001\09\18@134605 by Bob Barr

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(topic tag added)
Samuel Almachar wrote:
>
>Hi,
>
>I have a PIC16C65A , with my programmer pro16, i can read the original code
>(cp not active), but a I can't blank or rewrite a new code on it.
>Somebody know why? or how do it ?
>

Unless you have the windowed (JW) variety, the C65A is an OTP
(one-time-programmable) part. It is not a FLASH part that can be erased and
rewritten at will.

The only changes you can make to the EPROM contents is to change 1's to 0's.
Once programmed, you can't change 0's back to 1's without UV erasure.


Regards, Bob


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