Hi, no, it has not. You can use some tricks, however. See AN512/513. Hope this helps. Imre On Fri, 5 Feb 1999, Sam Powell wrote: > Do the f/c84 chips have an A/D input on them.... I ask since the 1 wire keypad concept of course requires one. > > ICQ: 23977120 > E-Mail: spweb@globalnet.co.uk > >