> > I'm happy to help out but now you are asking a tough one. Some > people claim it will shorten the life of the device but others > say this is rubbish. > > I have left devices under the eraser for hours and it didn't seem > to hurt them. > I ereased a number of PIC 16C5x. Without the protect bit the erease took about 10-20 minuts. I think that the time diffrence is caused by the eraser. I once set the protect bit. After that the devices needed about 20 - 40 minuts to erease (with the protect bit cleared). Eyal Oppenheimer E-mail: eyalo@aks.com R&D Aladdin Knowledge Systems Ltd. Tel: +972-3-636-2222 Fax: +972-3-537-5796 WWW Home Page: http://www.aks.com