27 Jan
2008
27 Jan
'08
10:51 p.m.
On Mon, 28 Jan 2008, Alexis wrote:
On Sun, 2008-01-27 at 19:37 -0800, David Griffith
wrote:
> Under what conditions can a 27256 be used in place of a 2764? I have a
> schematic that calls for the latter, of which I have none, but I have lots
> of the former.
Ground the extra address pins and write the data to
the lowest 8k of the
ROM. They are pins 1 and 26.
Make sure the grounded pins aren't attached to anything else on the
circuit.
I see 1 is Vpp (which won't be used anyhow). The extra address pins are
26 and 27. Am I right?
--
David Griffith
dgriffi at cs.csubak.edu