dsPIC30F2010 won't work
Hi all,
I am planning on purchasing the very nice Inchworm+ kit from blueroom electronics, but because it's a bit risky and expensive for me to get one where I live, and considering that I have all the components required to build one lying around on my workbench, I decided I'd first build a working prototype on breadboard. And so I did.
It works perfectly with all the PIC's I have right now, including these: 12F675, 16F628, 16F818, 16F819, 16F876A, 18F1320, 18F258, 18F2550. However, it fails with the dsPIC3020, just as javilon describes. Changing the coupling resistors to 100 ohms didn't seem make any difference, and the cable connecting both breadboards is only 3" long. I'm keeping all the wires very short and it doesn't seem the stray capacitances are to blame. All VDD and VSS pins are connected.
The same 3020, mounted on that same breadboard, works just fine with my home-built parallel-port programmer and it does that at an amazing speed! Too bad that programmer can't do debugging.
I was wondering if stronger buffering would be required, and perhaps I'll try that, but I'd rather not add another chip to the breadboard at this time. If this prototype can prove to work well for me, then I'll probably place an order for the much nicer Inchworm+ kit.
Could someone please help?
Thanks,
Ramcheck
Edit: I just realized that it can blank-check the PIC18F2431, but it will fail to program it. It keeps coming out blank all the time. The chip is good since I can program it with my parallel port programmer.