2 Mar
2011
2 Mar
'11
6:41 p.m.
On 3/2/11 9:15 PM, Brent Hilpert wrote:
Yes, from the book, there are (at least) R, U and P variations
(68705R.., 68705U.., 68705P..). The U version has an A/D converter. I'll
look it up if you have the part number handy.
I don't; it's at home in FL and I'm in WV for the next several weeks
at least. I have several 40-pin and one 28-pin windowed DIP
68705-family chips. I'll hit you up for that info when I get home, or
more likely, when I sit down to hack on one of them. Thanks!
-Dave
--
Dave McGuire
Port Charlotte, FL
From an initial look at the the book however, it
appears most of the
variations are mask-programmed and I'm not seeing any opportunity to
address or substitute external ROM. There are some EPROM (68705,
windowed of course) and a couple of EEPROM (6805K2,3) variations.
Hmm, the 68705 is the EPROM family version of the 6805 family? I
wasn't aware of that. I have several 68705 chips kicking around and
haven't done anything with them yet.