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weg22
Joined: 08 Jul 2005
Posts: 91
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| Programming TQFP Packages? |
 Posted: Thu May 25, 2006 5:31 pm |
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Hi all,
I am pretty sure there is no IC socket for the TQFP packages (i.e. PIC18F8722)? If so, I'm guessing you have to program them using an ICD? Is there a particular one that everyone recommends?
Thanks in advance,
weg |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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Mark
Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA
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| Re: Programming TQFP Packages? |
| Posted: Thu May 25, 2006 7:12 pm |
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| weg22 wrote: | Hi all,
I am pretty sure there is no IC socket for the TQFP packages (i.e. PIC18F8722)? If so, I'm guessing you have to program them using an ICD? Is there a particular one that everyone recommends?
Thanks in advance,
weg |
Yes there are but quite pricey. In circuit programming is the way to go. |
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kender
Joined: 09 Aug 2004
Posts: 768
Location: Silicon Valley
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| Re: Programming TQFP Packages? |
| Posted: Fri May 26, 2006 1:44 am |
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| Mark wrote: | | Yes there are but quite pricey. In circuit programming is the way to go. |
Yes, that's unquestionably true when dealing with prototyping quantities. But in-circuit programming adds a step to the manufacturing process. The programmer has to be connected to the board somehow and disconnected from it. I've seen it done either manually or through the "bed of nails". Manual operations are costly, and "bed of nails" requires additional equipment. So, in large quantities, it's good to be able to skip the in-circuit programming step. Luckily, there are services that will program chips for you with highly automated chip programmers. For example, I remember seeing on the web that Microchip and DigiKey can program chips for you (for a fee). |
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Mark
Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA
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| Posted: Fri May 26, 2006 6:35 am |
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| I doubt weg22 is producing "high volume". Unless you are buying masked rom or preprogrammed chips, the chips have to be programmed either on or off the board so there's not much difference. We ATE (Automated Test Equipment) many of our products so there's not an issue with "another" manual operation. |
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