I am going to be programming the 12f629 in the SOIC form factor. I am looking for recommendations as to what programmer would be the best to accomodate this. I am rather new at this and wish to make a good choice. Any enlightenment will be appreciated. TIA Vic ________________________________________________________ Victor Fraenckel - The Windman victorf ATSIGN windreader DOTcom KC2GUI Home of the WindReader Electronic Theodolite Read the WIND "Victory at all costs, victory in spite of all terror, victory however long and hard the road may be; for without victory there is no survival." - Winston [Leonard Spencer] Churchill (1874 - 1965) "Dost thou not know, my son, with how little wisdom the world is governed?" -Count Oxenstierna (ca 1620) to the young King Gustavus Adolphus "People sleep peacefully in their beds at night only because rough men stand ready to do violence on their behalf." -George Orwell |
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programming SOIC and other smt PICs
Started by ●November 17, 2004
Reply by ●November 17, 20042004-11-17
There are two issues to consider: programmer and interface method. I use an Melabs EPIC+ with SOIC 12F629s. It works fine for ICSP. I'm pretty sure most programmers that support the 629 will do fine. Note that if you pull mclr high internal and use internal oscillator, some programmers will have problems with ICSP (I've heard ICD2 but don't know that for a fact). You could of course use a pull up resistor on mclr or external crystal but that takes pins away from your application. Another issue is how you are going to interface to the chip: programming adaptor or ICSP. The melabs adaptor costs around $50 extra - I assume they work but have no experience with them. You could also add an ICSP header to your design but be aware of the above issues. The pin headers are pretty big so I made contact fingers on my PCB for ICSP - it works pretty well. The finger spacing is 100 mils and I use a card edge connector scavenged from an old cable as the ICSP adaptor. Slide it in, program, pull it out. fast, reliable and easy. I used it to program 50 PCBs I made. You can also get SOIC clips that would probably work. Phil --- In , "Vic Fraenckel" <victorf@w...> wrote: > I am going to be programming the 12f629 in the SOIC form factor. I am > looking for recommendations as to what programmer would be the best to > accomodate this. I am rather new at this and wish to make a good choice. > > Any enlightenment will be appreciated. > > TIA > > Vic > ________________________________________________________ > > Victor Fraenckel - The Windman > victorf ATSIGN windreader DOTcom > KC2GUI > > Home of the WindReader Electronic Theodolite > Read the WIND > > "Victory at all costs, victory in spite of all terror, victory however long > and hard the road may be; for without victory there is no survival." > - Winston [Leonard Spencer] Churchill (1874 - 1965) > > "Dost thou not know, my son, with how little wisdom the world is governed?" > -Count Oxenstierna (ca 1620) to the young King Gustavus Adolphus > > "People sleep peacefully in their beds at night only because rough > men stand ready to do violence on their behalf." > -George Orwell |
Reply by ●November 17, 20042004-11-17
Hi Vic, I made an ICSP board with a 3Com SOIC-to-conventional adapter, it's basically a socket with the contacts, and a spring-loaded hinged door that closes over the PIC and presses it against the contacts. You solder this onto a PCB, and run whatever wires you need out from it, I only did the ICSP wires, and it works wonders. This saves me from having to program the PICs once soldered on the board. Just be aware that if you plan for future upgrades you will need to leave some sort of ICSP access on the PCB. With this socket I programmed some 25 16F628As in a little over three minutes. Regards, Mike ----- Original Message ----- From: "Vic Fraenckel" <> To: "PICList" <> Sent: Wednesday, November 17, 2004 8:41 PM Subject: [piclist] programming SOIC and other smt PICs > > I am going to be programming the 12f629 in the SOIC form factor. I am > looking for recommendations as to what programmer would be the best to > accomodate this. I am rather new at this and wish to make a good choice. > > Any enlightenment will be appreciated. > > TIA > > Vic > ________________________________________________________ > > Victor Fraenckel - The Windman > victorf ATSIGN windreader DOTcom > KC2GUI > > Home of the WindReader Electronic Theodolite > Read the WIND > > "Victory at all costs, victory in spite of all terror, victory however long > and hard the road may be; for without victory there is no survival." > - Winston [Leonard Spencer] Churchill (1874 - 1965) > > "Dost thou not know, my son, with how little wisdom the world is governed?" > -Count Oxenstierna (ca 1620) to the young King Gustavus Adolphus > > "People sleep peacefully in their beds at night only because rough > men stand ready to do violence on their behalf." > -George Orwell > > to unsubscribe, go to http://www.yahoogroups.com and follow the instructions > Yahoo! Groups Links |