Hi,
I'm new to the list but have been using Atmel for a long time.
I'm glad I found this.
This convention dates back to the first PROMs and EPROMs.
Where the cell of each data bit was actually a type of fuse which literally
gets burned (or popped) by using a higher programming voltage.
So the unprogrammed state was actually a 'closed' connection,
thus creating a logic 1 as if you the switch was closed until you opened it.
This convention has remained intact over 30yrs year now.
IIWDTI
=Dan
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Joerg Wunsch wrote:
Vincent Trouilliez <[EMAIL PROTECTED]> wrote:
About the fuse bits that have a reversed logic, I am not sure why
the data sheet keeps insisting that 0 means programmed and 1
unprogrammed.
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