Re: anyone got a 7020 "Minikit" and got it to function?
--- In ADuC_ARM@yahoogroups.com, "mandras76" <mandras76@...> wrote:
> There's a downloader called ARMLSD (!) here:
good to see - I'll try it out.
> The only thing I don't like is the LED hardwired to DAC1, but it's
> only a resistor I'll have to remove to get rid of it. And, if I had
> designed the board, I would have made footprints for a crystal and two
> SMD capacitors to make it easy to add a crystal for timing accuracy
> (which I need).
> I think the ADuC7020MK is the best (only?) way of building a circuit
> with 4 DACs without making a PCB or having to deal with the
> non-standard dimensions, unwanted connectors, etc. on the full QS
> version. In other places, you pay $30 for a cable alone, so I think
> this is a great offer.
I have similar feelings, but after all it is just a short-form eval
board. Like you the DAC support is the big thing I find most useful.
I have a variety of analog design tasks at work that this chip might
be useful for.
For my own purposes, I am in the process of designing my own ADuC7020
board. Two variants.
Type one has a CP2102 USB/serial chip connecting to the 7020, and then
a simple 3.3v regulator to supply. With all the I/O pins brought out
to (what are for me) convenient headers. Just a modified MiniKit really.
Type two is going to feature opto-isolators in various forms and
current sources - I need to work with in vitro biological samples and
that causes all sorts of niggly problems.
When I get the type one board done I'll put the designs up, and I may
have a few blank PCBs to give away. There are hand soldering issues
of course with both the CP2102 and the ADuC