Post by thread:[PIC] Samsung -> PIC Retrofit?

I have a board that currently uses a Samsung micro ( S3F9454BZZDK94 ) in a 20 pin DIP package. What I'd like to do is replace it with a PIC (or AVR at a pinch) and not have to learn another micro's ways or find an IDE for it. Vss is on pin 1 and Vdd is on pin 20. This is opposite than some other micros that have their pins "up the top". This is not a one-off replacement by the way and it ideally needs to be a plug in replacement. Has anyone else been down this path before? David... -- ___________________________________________ David Duffy Audio Visual Devices P/L Unit 8, 10 Hook St, Capalaba 4157 Australia Ph: +61 7 38235717 Fax: +61 7 38234717 Our Web Site: http://www.audiovisualdevices.com.au ___________________________________________

I have a commercial device with a defective OTP chip that is unavailable for repair. The current scheme is to fabricate a PIC module on a PC Board that plugs into the OTP socket to provide appropriate power and port connections. The osc & pgm connections would be on the new PCB. Software would need to be written from scratch. This is a hobby/academic subject for me and I have yet to work with any PIC's other than DIP. Until I develop the skills needed for a smaller package, my project is on hold! On 6/19/2012 12:18 AM, David Duffy (AVD) wrote: {Quote hidden}> I have a board that currently uses a Samsung micro ( S3F9454BZZDK94 ) > in a 20 pin DIP package. > > What I'd like to do is replace it with a PIC (or AVR at a pinch) and not > have to learn another micro's ways or find an IDE for it. > > Vss is on pin 1 and Vdd is on pin 20. This is opposite than some other > micros that have their pins "up the top". > > This is not a one-off replacement by the way and it ideally needs to be > a plug in replacement. Has anyone else been down this path before? > David... > -- John Ferrell W8CCW “During times of universal deceit, Telling the TRUTH becomes a revolutionary act” George Orwell

Yeah, I had thought of something like that. I'm not overly fussed on a plug-in board (with new chip) as we'd then have to secure it down. If there's no pin compatible PICs, we may just have to offer that solution to our client as an option I guess. David... On 19/06/2012 8:35 PM, John Ferrell wrote: {Quote hidden}> I have a commercial device with a defective OTP chip that is unavailable > for repair. The current scheme is to fabricate a PIC module on a PC > Board that plugs into the OTP socket to provide appropriate power and > port connections. The osc & pgm connections would be on the new PCB. > Software would need to be written from scratch. > > This is a hobby/academic subject for me and I have yet to work with any > PIC's other than DIP. Until I develop the skills needed for a smaller > package, my project is on hold! > > On 6/19/2012 12:18 AM, David Duffy (AVD) wrote: >> I have a board that currently uses a Samsung micro ( S3F9454BZZDK94 ) >> in a 20 pin DIP package. >> >> What I'd like to do is replace it with a PIC (or AVR at a pinch) and not >> have to learn another micro's ways or find an IDE for it. >> >> Vss is on pin 1 and Vdd is on pin 20. This is opposite than some other >> micros that have their pins "up the top". >> >> This is not a one-off replacement by the way and it ideally needs to be >> a plug in replacement. Has anyone else been down this path before? >> David... >> -- ___________________________________________ David Duffy Audio Visual Devices P/L Unit 8, 10 Hook St, Capalaba 4157 Australia Ph: +61 7 38235717 Fax: +61 7 38234717 Our Web Site: http://www.audiovisualdevices.com.au ___________________________________________

-----Original Message----- From: spam_OUTpiclist-bouncesTakeThisOuTmit.edu [.....piclist-bouncesKILLspam@spam@mit.edu] On Behalf Of David Duffy (AVD) Sent: 19 June 2012 13:39 To: Microcontroller discussion list - Public. Subject: Re: [PIC] Samsung -> PIC Retrofit? >Yeah, I had thought of something like that. I'm not overly fussed on a plug-in board >(with new chip) as we'd then have to secure it down. If there's no pin compatible >PICs, we may just have to offer that solution to our client as an option I guess. >David... PICs are now available in very small packages, e.g. DFN, uQFN and CSP so you can probably make a plug in module which is no larger than the 20 Pin DIP package. Mike ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. =======================================================================

You can do something similar to this: item.mobileweb.ebay.com/viewitem?itemId=140598887420 Easy, fast and cheap. You will have to design your own board, due to special power pins allocation. If you never work with smd, ssop can look difficult, but it's not so. Of course, soic is easier, but ssop feets perfect and is affordable enough to be hand soldered. Qfn and others are much more difficult to be hand soldered. Only need to add programming pins for icsp and you have a direct replacement board. El martes, 19 de junio de 2012, Michael Rigby-Jones < Michael.Rigby-JonesKILLspamoclaro.com> escribió: > > > {Original Message removed}