Why external pull up/pull downs required for unused I/O pins?

[obtronix]

Posted on November 08, 2007 at 14:27

Why external pull up/pull downs required for unused I/O pins?

[obtronix]

Posted on May 17, 2011 at 12:17

Datasheet requires external pullups/pulldowns for unused pins set up as inputs (Figure 20), so why can't I use the internal pullups?

[16-32micros]

Posted on May 17, 2011 at 12:17[ This message was edited by: STOne-32 on 09-11-2007 11:37 ]