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- From: sasrer@unx.sas.com (Rodney Radford)
- Subject: Re: PICs
- Sender: news@unx.sas.com (Noter of Newsworthy Events)
- Message-ID: <sasrer.726901461@cinnamon>
- Date: Wed, 13 Jan 1993 05:04:21 GMT
- References: <C0rHqz.2Jq@iat.holonet.net>
- Nntp-Posting-Host: cinnamon.unx.sas.com
- Organization: SAS Institute Inc.
- Lines: 45
-
- 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
-
- Motorla is dropping several members of the 68705 family, but from what I
- remember of the last list, there were still over 20 variations of this part
- still in full production (in fact the latest member, the 68705K1 was just
- announced last summer).
-
- Yes, the Microchip PIC parts are nice, but they require that you put out
- money to buy a programmer from Microchip (or Parallax has one too) for about
- $200, or use one of the $1K+ universal programmers. Both are kind of expensive
- for the typical electronics experimenter. However, if you are REAL NICE to
- Microchip, and get the RIGHT FE on the phone, they MAY give you a copy of
- the programming specs - with that it is possible to easily build a IBM/PC
- controllable programmer for under $20 (for the 16c5x series).
-
- I understand that the 16c71 programs via a serial interface, and that the
- programming specs are in the normal data sheets. If so, great - but I haven't
- seen the specs to verify this.
-
- 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.
-
- 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!!!!
-
- --
- ---
- Rodney Radford || Computer Graphics/Imaging
- sasrer@unx.sas.com || SAS Institute, Inc.
- (919) 677-8000 x7703 || Cary, NC 27513
-
-