On Wed, 15 Apr 1998 14:43:18 +0200 Alessandro Zummo writes: >> that way for all PIC's with the Code-protect bit in EPROM. >> it's just that the code-protect bit is much harder to erase than >normal >> Program-data bits (to ensure that the code-data is gone before the >> code-protect bit is cleared) > >there's an official statement about this? i need to be sure... Microchip's official statement (which appears in newer data sheets) is that they do not recommend setting the CP bits in windowed chips. They do not guarantee that these bits can be erased, so the chip may become impossible to reuse. Some people have reported that with some newer PIC chips, many hours of exposure to UV will still not erase the CP bits. Microchip seems to make no claims about the effectiveness of the code protect logic, other than that it will prevent a normal programmer from being able to read out the code. _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866]