I found no significance between batches of 16F84s and would assume that this table is usable for any 16F84. I don't know how the 16F628 wafer differs from the 16F84, but expect (ha !) it isn't all that different. There's only one way to find out.........but I don't got time to do so right now http://home.clear.net.nz/pages/joecolquitt/0wdttemp.html -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu