At 02:22 23/09/99 -0300, you wrote:
>Hi
>Is it possible to erase a windowed PIC with sun light ??
>How much do I have to wait ?

Weeks I would say. Not good for your development cycle time.

>Bye and thanks



>Javier
>PD I just bought a 12c509 shouldn4t it be erased ?

The last location has a calibration value. Read the device and note down
this value. You should program each time you burn the chip.

Your first instruction at address 0000 should be  MOVWF OSCCAL. This puts
the calibration value to work trimming the internal R/C oscillator.

Jim
Regards,

Jim Robertson
NEWFOUND ELECTRONICS
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Email: newfound@pipeline.com.au
http://www.new-elect.com
MPLAB compatible PIC programmers.
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