Giorgio Alboni wrote:
>
> I'm using a PicStart Plus programmer whit MPLAB v.3.12.00
> I tryed to read the calibration parameters of a pic1400/jw (9630 SAT, made
> in Thailand) but the result was invalid data. I used this procedure:
>
>         1) Enable pic programmer (set pic1400 on programmer status -> device)
>         2) Read device (checked the calibration data box)
>         3) Window -> Calibration data..
>
> The calibration data displayed was:
>
>         Kref:  Invalid Data
>         Kbg:   Invalid Data
>         Kthrm: Invalid Data
>         Ktc:   Invalid Data
>         Kin:   255
>         Kwdt:  255
>
> Note: the device is new, never UV erase.
> Where is the problem? I can't delete (and program) the devide before read
> this data, they are too important for the 16 bit A/D.
> Thank's.

For MPLAB v3.12, you should go to the Editor Only mode to read in the
values from the device.  Then you'll see the correct values in the
calibration memory window, and if you re-program the PIC14C000, the data
in the calibration memory window will be programmed into the part.