Subject: Sat.

Date: Sat, 24 Jul 1999 12:24:59 EDT

From: DMeyer8142@aol.com

To: rodl@scc.net



Rod-

After a few false starts, I have come to realize that the standard 80C31

cannot control a motor, read an encoder,,drive a display, scan a keypad,

address 32K eprom, 32K ram  and 3MEG of flash. There simply are not enough

bits to go around. An alternative device would be a Phillips 8051-based

controller

called the 80C451. It has all the features we are used to with the addition

of 3 more bytewide ports, one of which can act like a quasi-data bus . It

comes in a 68-pin PLCC package and is in the $5.00 range, what do you think?

Don

