At 08:30 AM 6/2/03 -0500, Dale Botkin wrote: >The 12CE67x chips have a GP3/MCLR/Vpp pin just like the 12F629/675, and >yes they do have an internal active weak pull-up exactly like the others. >It's disabled if you have the pin configured as MCLR. This might bite you sometime: WPU is *enabled* when the pin is configured as MCLR. From datasheet DS30561B-page 25: "If pin 4, (GP3), is configured as MCLR, a weak pull-up is always on." Same for the 12c50x: datasheet DS40139E-page 21 says: "If pin 4 is configured as MCLR, weak pull-up is always on and wake-up on change for this pin is not enabled." dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 19 years of Engineering Innovation (1984 - 2003) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics