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We programmed it!!! The problem was exactly that, we weren't connecting the backplate ground plane. thanks for your help. If we didn't do what you guys said, we might've blown up another pic in the process of debugging.
All of them.
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We think we figured out what was going wrong. This going to be incredibly dumb, but we contacted the guys who soldered the pic to the board for us and we realized that there were extra pins we weren't connecting. The breakboard has extra pins for the ground...
The device is mounted on a breakout board, we had a company do the soldering for us, since the pic is a small QFN package. When you say check for shorts, do you mean to check for resistance between each pair of Vdd/Vss pins?
Yes, the problem still persists. I am not at the lab at the moment (we tried without the pickit3 earlier, and we have two pickit3's and tried both), but we did the opposite of you suggestion, where we started with no Vdd/Vss pins connected, provided power (.2A max current) and then slowly added...
I don't know if the last post went through, so here is the new, easier to read schematic that reflects what we are actually breadboarding.
For MCLR, we have tried multiple configurations. One without any of the resistors and just plugging the MCLR line straight into the pickit3. Apparently...
I redrew the schematic to more accurately reflect what we are bread boarding. Vcap is going to ground and we aren't using the led. Also, we aren't using a battery, but an external power supply (the image says a battery however). Also, we aren't inputting 3.3V, usually its around .9V-1.2V because...
I don't think we've burnt out this chip. We've been current limiting the circuit the entire time and it has never gone above .3A, which is the maximum operating current at normal temperatures for this pic.
This the minimum required connections, specified by the datasheet.
This is a...
Bump:
We have been playing with everything some more and we've found out that we can supply 3.3V at .2 Amps on Avdd and Avss, but for the Vdd & Vss pins, we can only supply 1.1 V at .2 A. If we go higher on those pins, we might destroy the chip. Is this normal behavior?
Hello edaboard,
I am working on a project, and for that project I have to program a dspic33ep128mc206 microcontroller from microchip. This is a link to the specific chip.
https://www.microchip.com/wwwproducts/Devices.aspx?product=DSPIC33EP128MC206
The data sheet for the dspic is at the bottom...
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