Newsgroups: comp.robotics
Path: brunix!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbnews!wrb
From: wrb@cbnews.cb.att.com (wallace.r.blackburn)
Subject: Re: PICs
Organization: AT&T
Distribution: usa
Date: Wed, 13 Jan 1993 16:42:36 GMT
Message-ID: <1993Jan13.164236.7390@cbnews.cb.att.com>
References: <C0rHqz.2Jq@iat.holonet.net> <sasrer.726901461@cinnamon>
Lines: 49

In article <sasrer.726901461@cinnamon> sasrer@unx.sas.com (Rodney Radford) writes:
>bsmall@iat.holonet.net (Brad Smallridge) writes:
>
>>PIC UPDATE 
>
>>First of all, we can forget about the Motorola 68L705. I
>>was told that after the current supply of parts is depleted, 
>>the 68L705 will no longer be available.  On the other hand, 
>>Microchip is strengthening its PIC line
>

Bullshit.  It's OK to push your favorite micro and all, but don't do it by
spreading disinformation about other stuff.  The HC705 series has a number
of variants.  You're probably talking about the 'K1, and it is barely into
full production.  Motorola can't keep up with demand - why would they
discontinue it?

>
>On the other hand, many of the Motorola 68705 family are self programming,
>where they just copy their internal EPROM image from another EPROM. So you
>just program the master EPROM in your normal programmer, stick it in a very
>simple circuit, and it does the rest (and the circuit schematics are available
>from Motorola, along with PC boards). Or if you were lucky enough to buy one
>of the 68705K1 evaluation kits last summer it only cost $50 for the programmer,
>a SLUSH development system (not quite as 'cool' as an ICE system), assembler,
>and one of their parts.
>

The 'K1 data book even shows how to hook the chip directly to the PC
parallel port and program it with FREE software from their BBS.  You just
provide Vcc and Vpp (5V and 16.5V, respectively.  The circuit in the book
uses a switcher to generate Vpp from Vcc.

>And no, I have no ties to Motorola - I just like their 16705 line. Now if they
>would just get their act together and get me some 68705K1s I would be happy as
>I have been 'in the queue' since last July!!!!
>

I just got some from Future (800-945-6996) that I ordered in July.  Don't
know how far back they are now.  Give 'em a try.

>--
>---
>Rodney Radford          || Computer Graphics/Imaging
>sasrer@unx.sas.com      || SAS Institute, Inc.
>(919) 677-8000 x7703    || Cary, NC  27513
>


