semetu
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I heard something like that
The Pic chip (PIC16C84) can in fact have it's program and data
memory read after the config fuses have been set to code
protection on.
Try the following:
Write some code to the chip with the code protection set to "ON".
Read back to verify that the protection has indeed come on.
Now set Vdd ( pin 14 ) to Vpp-0.5v, (Programming voltage less
0.5V).
Set config fuse to "OFF" and reprogram config fuse.
Now set Vdd back to normal, +5v.
Power off the programmer.
Wait 10 to 20 sec.
Power back on the programmer. (VDD at + 5V)
Read the Pic.... and hey presto, data in unprotected format should
now be available
Is it possible?
The Pic chip (PIC16C84) can in fact have it's program and data
memory read after the config fuses have been set to code
protection on.
Try the following:
Write some code to the chip with the code protection set to "ON".
Read back to verify that the protection has indeed come on.
Now set Vdd ( pin 14 ) to Vpp-0.5v, (Programming voltage less
0.5V).
Set config fuse to "OFF" and reprogram config fuse.
Now set Vdd back to normal, +5v.
Power off the programmer.
Wait 10 to 20 sec.
Power back on the programmer. (VDD at + 5V)
Read the Pic.... and hey presto, data in unprotected format should
now be available
Is it possible?