Posted on May 17, 2011 at 11:59Hi, Do port1--4 of uPSD33xx have internal pull-ups? If yes, how many ohm? I can't find this kind of information in data sheet. Thanks. Regards Bryan

Posted on May 17, 2011 at 11:59Hi, Are we reading the same data sheet(uPSD33xx, not 32xx)? Mine is Sep. 2003, it is only 129 pages. I can't find newer one on ST website. Bryan