Matt, I think it is better to know witch pic do not have open collector RA4 pins? If you work with different MCU you will find that almost all other mcu's you can setup any pin to be open collector. Andre -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf Of Matthew Rhys-Roberts Sent: Tuesday, February 12, 2008 7:04 AM To: Microcontroller discussion list - Public. Subject: List of PICs with open collector RA4 pin? Has a list of PICs ever been compiled, indicating those with open collector RA4 pins? I have read that some PICs have this feature while others do not. It would be nice to know at a glance, rather than filter through each datasheet. Thanks Matt -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist