> Searching the entire document for the word refresh finds no other > occurrences. Can any one here explain what is meant by 'refresh' > in this context? > > TIA, > Tom I've looked (admittedly speed-reading) through the ANs* suggested in the Mid-Range Manual and can't find mention of "array refresh" either. It's a little difficult to make sense of that Section 8.5.1 you quoted. The only thing I can think of is that you rotate storage addresses to minimise wear and tear, but that doesn't square with "Frequently changing values will typically be updated more often than specifications D120 or D120A. If this is not the case, an array refresh must be performed" Maybe ignore "somebody's" wording (eg why is it a "must" to use arrary refreshing ?) in the 12F675 manual and focus on the pretty solid-looking engineering tips and tutorials in the ANs *AN536, AN537, AN562, AN601, AN602 http://www.microchip.com/1010/suppdoc/appnote/alpha/index.htm -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.