Honored Contributor
Honored ContributorIn the meantime, Altera has published an application note covering the topic of storing a non-volatile counter in MAX II. See http://www.altera.com/literature/an/an547.pdf
Interestingly, the AN suggests to use part of UFM as bit programmable memory, although this operation isn't permitted according to MAX II device handbook. The respective paragraph can be still found in most recent version of Dec08, as well as the specification of mimimal 100 erase cycles for UFM. --- Quote Start --- You can write to any word up to two times as long as the second programming attempt at that location only adds 0s. --- Quote End --- The obvious question is: Don't Altera application engineers read device manuals or is the said paragraph obsolete?
