Re: [Usbpicprog-technical] PIC 16F628A

[Frans S. <fra...@gm...>]

The io_test function is good for an indication, but not very accurate in 
voltage. Using a multimeter is a better option.

On 24-4-2013 13:58, ShadowCaster wrote:
> Hello Frans,
>
> Thanks for your quick reply i'll double check the voltages but i think 
> that VPP is 11.4 to 12.3 when i try the I/O test function in the 
> software, i'll connect the programmer with the pic and check with a 
> multimeter and the I/O test function.
>
>
> On Wed, Apr 24, 2013 at 2:26 PM, Frans Schreuder 
> <fra...@gm... <mailto:fra...@gm...>> wrote:
>
>     Dear Nick,
>
>     The 16F628A PIC does work with the current software / firmware,
>     although this pic is very selective when it comes to operating
>     voltages.
>     Please verify that VDD > 4.5V and VPP >13V with the pic connected.
>
>     Regards,
>
>     Frans
>
>
>     On 24-4-2013 13:22, ShadowCaster wrote:
>>     Hello,
>>
>>     I implemented the programmer based on the designs and it
>>     works flawlessly with a PIC 18F2550 and a 18F1320.
>>     The thing is that i tried to program a 16F628A that should be
>>     compatible, although it is properly detected it doesn't write any
>>     data to it. When i read it i get a repeated pattern : FF 3F FF 3F.
>>
>>     I tried the same pic with a old serial programmer and it is
>>     written without a problem so it is not a pic problem
>>
>>     I tried both the latest stable as well as the latest devel
>>     firmware/software. Is the functionality for this model broken in
>>     the latest versions? Can somebody verify?
>>
>>     Regards
>>     Nick
>>
>>
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