Newsgroups: comp.robotics
Path: brunix!cat.cis.Brown.EDU!agate!tcsi.tcs.com!uunet!hearst.acc.Virginia.EDU!cabell.vcu.edu!jwill
From: jwill@cabell.vcu.edu (J. Sherwood Williams)
Subject: Re: 68hc11e9 Vs. 68hc711e9
Message-ID: <1994Aug12.053239.7043@cabell.vcu.edu>
Organization: Virginia Commonwealth University
References: <31ueot$hq8@search01.news.aol.com> <CuALM7.9G7@srgenprp.sr.hp.com> <BILLW.94Aug10002215@glare.cisco.com>
Distribution: usa
Date: Fri, 12 Aug 1994 05:32:39 GMT
Lines: 26


A cheap source of HC11E1's is Beall & Glenn Enterprises. They sell
them for $3.00 each. They also offer a complete development board
with BUFFALO Monitor, and several programming languages (two disks)
including a 32K EEPROM ... as a kit for $36.00, or as a completed
board for $45.00 : Free shipping on orders over $20.00, $2.00
otherwise. 


             1-800-874-4797

I just bought and built one of their "Quick Setup" boards and it
works great. Has the RS323 chip onboard, and 32K of space to program.
It has four pushbuttons and three indicator lights to boot the chip
in various ways. I think it is a real bargain. I also bought some
HC11E1' and some of the EEPROM chips because they interface to the
HC11 with just 18 wires ( All the AD lines and the A lines ) and does
the address latching right on the EEPROM chip. I have managed to wire
one of these onto a BotBoard in the prototyping area. You need a
74HC00 plus the EEPROM chip. It also requires 12 Volts to write....
but I've located a source for small DC/DC convertors at $2.50 each so
you can power the whole setup from +5VDC or, with a single SMD 79L05
Voltage regulator, you can use a 9 Volt battery to power the board. 


                           Robert S. Williams
