I have been working on a project using a M16/Tiny 026F8. To debug the project, I took a QSK26A and removed the 026F8 from the board. I then added a 14 pin header to the board and to that header attached the needed lines to control an outboard 026F8. Specifically:
Pin # M37641F8HP 026F8
Pin 1 pin 29 pin 28 (P6-5)
Pin 2 gnd gnd
Pin 3 pin 59 pin 4 (CNVss)
Pin 4 n/c n/c
Pin 5 pin 28,56 pin 26 (P6-7)
Pin 6 gnd gnd
Pin 7 pin 57 pin 6 (P8-6)
Pin 8 Vcc Vcc
Pin 9 pin 61 pin 29 (P6-4)
Pin 10 gnd gnd
Pin 11 pin 27 pin 27 (P6-6)
Pin 12 gnd gnd
Pin 13 pin 62 pin 7 (*reset)
I built a prototype PCB and had it working with HEW. I had a production run of the PCB's done and they do not work. I have checked for errors, but the boards ring out identical to the prototype PCB.
I can open up FoUSB and it says it downloads the program and verifys it - but the board does not work when power is applied away from the QSK26A.
In HEW, it recongnizes the board on startup for debugging, and also allows me to download a program. (It does pause for a few seconds after reaching 100% which seems strange) When I start the program in HEW, nothing seems to happen - breakpoints do not work. Clicking on the stop button gives the "Communication protocol error (Argument error)(16230)" and I have to use Task Manager to close HEW.
One difference I just thought of is that I am running WIn7 now where I was running Vista before.
If needed, I can post the schematic on my website.
I would really like to get these items on the market, so any help you can provide would be appreciated!
Hi Anothy - thanks for the suggestion - I am not sure why I had not thought of if before - I had run into that problem with MicroChip processors and had switched to using oscillators instead of crystals. I tried a 10MHz oscialltor and the board came to life. Unfortunetly the RTA_FoUSB still will not connect to the board.