On 11/16/07, Jinx wrote: > > I thought also of using a baby PIC, but somehow the fact that it's > > a clocked micro running program code seems somehow less > > bulletproof than a purely logic based solution. Not sure if this > > concern is truly valid though > > No reason a micro shouldn't be as reliable a solution as a dedicated > IC. There are pros and cons for either option (cost, simplicity, s/w, > availability etc) There is one big reason why it should not be used. As long it needs programming and is acting like a two penny 74SN7121 or 74SN7123 why the hell to use a microcontroller or other $20 part ? There are sooo many dedicated Ics (I think I can number around 20 without searching at Digikey) that a programmed microcontroller (anyone would be that) should be the last and the most complicated option. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist