Hi, does anyone know, how many program/erase cycles a 17C44 will survive? Is it a problem, that the configuration bits are reprogrammed with their current value, because erase time - sufficient for program space - does not suffice for erasing the configuration bits? Should I always erase so long, that the configuration is cleared? Does the UV-lamp cause radiation-defects in the semiconductor? TIA Wolfram -- +-----------------------------------------------+ ! Wolfram Liebchen, liebchen@ipserv.ffo.fgan.de ! ! Forschungsinstitut fuer Optik ! ! Schloss Kressbach ! ! D-72072 Tuebingen ! ! Tel: +49 (0)7071 / 709-158 ! ! Fax: +49 (0)7071 / 709-270 (G3 / G4) ! +-----------------------------------------------+