looking for a PIC

[spcw1234]

This might help, but those power pins are going to be tough to match.

http://www.microchip.com/stellent/id...cName=en544123

[dhouston]

Shawn, thanks for the link.

I guess Microchip thinks that's an improvement - I sure don't. It is better than nothing but not by much.

Oh well, even if I found a chip, Digikey has discontinued their print catalog, making it just short of impossible to buy anything from them.

[Jumper]

Hi,

Get any PIC in a really small package and surface mount that one on a break-out board that you later surface mount on the current footprint on your pcb. Or if you have a thru hole foot print just make a board with pins that you can solder in that place or use a IC-holder.

Then you can use any pic you like and still get the pins to be in the correct place

[dhouston]

@Jumper - the SOP14 SMD chip is surrounded by other components and there is minimal headroom so a breakout board wouldn't work even if I designed one with the correct pin mapping. Plus, the (elderly) people who will have to do the work are total novices who could probably handle direct replacement of an SOP14 size chip (with a hot air rework station) but not much else as far as SMD.

But, it turns out the Sonix chip in the keyfob is powered by 12V directly to the chip so I will have to find another way to do this.

[Jumper]

No problem.. I was more thinking of that you make the board and mount the LLC package of the pic... and then put a drop of epoxy on the top to protect it.. The board will be similar in size (just a litte bit more narrow than the normal SOP-14 leg witdh)

Then the board has plated pads on the side that allows it to be soldered on the side using a regular soldering iron.

I have a similar component today and I can upload a picture tomorrow to show what it looks like

[dhouston]

Then the board has plated pads on the side that allows it to be soldered on the side using a regular soldering iron.

How do you manage that type of pad? I've seen them but my layout software has no obvious method to create them. Also, I'm not sure they can get an iron on the existing pads.

[dhouston]

I just realized that I can ditch the DIP switch and use that space to do about anything I might need.

[Demon]

...Oh well, even if I found a chip, Digikey has discontinued their print catalog, making it just short of impossible to buy anything from them.

Why? Your ISP blocks their site? Their search feature works pretty good, haven't had a problem yet.

Robert