6805 equipment pulls
mcguire at neurotica.com
Wed Mar 2 20:41:52 CST 2011
On 3/2/11 9:15 PM, Brent Hilpert wrote:
>>> 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.
> 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!
Port Charlotte, FL
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