pic 16f84 and skip security byte?

[hrco]

or delete or any solution how is it possible to read this peace of electronic elemt if is read protection enable?
Any link sw, shematic or something?

thanx...

[LOUZEW]

I think there is no way !

[hrco]

I'm shure it is exist some solution which DELETE this security byte, but I don't have it....

so if any have and wan to share it will be very nice...

I'm not sure about this device in particular. I know some microcontrolers would have a security fuse, when blown you couldnt read the memory. What people started doing is drilling into the substrate and reconnecting the fuse. You would see ads in magazines for companies doing this.

Then some manufacturers started putting important circuitry over the fuse, so you would destroy the device if you try to drill to the fuse.

http://www.google.com/search?hl=en&ie=UTF-8&q=pic16f84+%22security+bits%22&spell=1

[SiNTAX]

With early revisions of that chip there was a way to read it out even when the security was set. I'm not sure if it is still possible with newer revisions. (by supplying it with wrong voltage variations, it was possible to reset the security bit without erasing the other content)

I'm sure google will present you with more info :-)


update: quick search on google hxxp://www.cl.cam.ac.uk/~sps32/