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Unable to properly program 324PAs but 324PBs work
Alright, I feel that I have to reply to this with the resolution. Turns out when I said 4" leads, we were actually using 6" leads. (My boss and i have differing definitions of "...
Friday, 15 September 2017 - 04:20
Unable to properly program 324PAs but 324PBs work
Damn, you got me. I typo'd those two. The PB is backward compatible with the PA. In the PA those lines are additional Vcc's and Grounds. 
Wednesday, 13 September 2017 - 02:17
Unable to properly program 324PAs but 324PBs work
OK I have a schematic of my test setup in which I can program a 324PB but not the 324PA. There's some contention in the office over whether or not the 644PAs work, because we only...
Tuesday, 12 September 2017 - 23:55
Unable to properly program 324PAs but 324PBs work
Well, the engineering samples are the ones that are working. The PAs are real production chips from I wanna say Mouser.
Tuesday, 12 September 2017 - 11:51
Unable to properly program 324PAs but 324PBs work
Ok, and I'm not trying to sound ungrateful. But I thought I was clear that my shortest 3" leads didn't help. EDIT: 3" is ~75mm
Monday, 11 September 2017 - 22:24
Unable to properly program 324PAs but 324PBs work
Thanks! It really is a great chip, if you can get your hands on it.
Monday, 11 September 2017 - 22:18
Unable to properly program 324PAs but 324PBs work
Ok, but if you read the line that you quoted you'd realize that doesn't really apply here. The ones that WORK work just fine with the long cable. The ones that won't work don't...
Monday, 11 September 2017 - 22:08
Unable to properly program 324PAs but 324PBs work
Ok, so I would and did only use the Dragon power when I have a bare chip in order to reduce all sources of issues. Regardless, it's clearly not the problem so let's forget I...
Monday, 11 September 2017 - 22:04
Unable to properly program 324PAs but 324PBs work
On the chips that work, 2 feet. For my testing I used 3 inch duponts to connect the breakout to the Dragon. The 3 inch duponts didn't work.
Monday, 11 September 2017 - 21:58
Unable to properly program 324PAs but 324PBs work
No, it was designed for PA. As stated previously, I have those lines connected. We have hacked the board to pieces to use SPI and that does work. The PB works with either.
Monday, 11 September 2017 - 21:48
Unable to properly program 324PAs but 324PBs work
Since when can't the Dragon power a target when that target is a 20mA AT? And I tried it with everything I owned that could produce 3-5 volts. None mattered.
Monday, 11 September 2017 - 21:46
Unable to properly program 324PAs but 324PBs work
That would be a neat trick, to get the JTAG to work partially with the JTAG fuse disabled.    The JTAG is enabled. I now have a minimal setup of a 324PA on a 44pin DIP...
Monday, 11 September 2017 - 21:00

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