ComputerVoltageSources

I uploaded the datasheet for the H8 chip used in the Basic Atom Pro.
And the data sheet for the Basic Atom Pro 24M.

The microcontroller is just chock full of useful hardware. Nearly every port pin has more than
one function.

That can be a problem as we found out. For some reason the I2C bus pins don't like to be
used as general purpose I/O.

I thought I'd put the datasheets here for the moment. When I find a reliable URL, I will post
the link in and delete the datasheets. But they will be handy for the discussion of hardware
fine points.

There is no datasheet for the Basic Atom Pro 28M. Basic Micro told me to use the Basic Atom
28M datasheet as a guide. I will have to sort that out before we go to copper.

I hope to have schematics of the MIDI, DIN, and analog sections uploaded this week.

I was browsing around on the Basic Micro site and
spotted this:

http://www.basicmicro.com/Category.aspx?CategoryID=17

This appears to be bare H83664 chips, presumably
programmed with the BasicATOM Pro code. There's a
42-pin DIP available for $20 - considerably less
expensive than the full-up BasicATOM Pro package.

I wonder how much extra support circuitry it would
take to use one of these instead of the regular
BasicATOM Pro-28M? There's not much info on the
website - anyone have any experience with these?

Eric

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There was some discussion of this in the forum some time ago. What I
understand is that this is an interpreter, not a compiler, and so does
not have the performance.

Dave

--- In ComputerVoltageSources@yahoogroups.com, Eric Brombaugh
<ebrombaugh@...> wrote:

>
> I was browsing around on the Basic Micro site and
> spotted this:
>
> http://www.basicmicro.com/Category.aspx?CategoryID=17
>
> This appears to be bare H83664 chips, presumably
> programmed with the BasicATOM Pro code. There's a
> 42-pin DIP available for $20 - considerably less
> expensive than the full-up BasicATOM Pro package.
>
> I wonder how much extra support circuitry it would
> take to use one of these instead of the regular
> BasicATOM Pro-28M? There's not much info on the
> website - anyone have any experience with these?
>
> Eric
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>

The schematic is in the datasheet for the Basic Atom Pro 24M module in the files section.

It is just an RS-232 voltage level translator for the flash loading port and a few other
things (what you call "glue" circuitry).

You could put the all the extra circuitry on the PC to save a few bucks but use up a lot
more space. My guess is by the time you get done getting all the extra parts then add
labor, it would end up being more expensive than just buying the module.

Two options, build what is now on the module carrier board in surface mount into the
main PC board using through hole parts. Or just use the Basic Atom Pro module as a space
saving sub-assembly already tested for you.

The guys at Basic Micro have made no effort to hide any design information. They are
incredibly open with their design and support (for a shoestring operation).


--- In ComputerVoltageSources@yahoogroups.com, Eric Brombaugh <ebrombaugh@...>
wrote:

>
> I was browsing around on the Basic Micro site and
> spotted this:
>
> http://www.basicmicro.com/Category.aspx?CategoryID=17
>
> This appears to be bare H83664 chips, presumably
> programmed with the BasicATOM Pro code. There's a
> 42-pin DIP available for $20 - considerably less
> expensive than the full-up BasicATOM Pro package.
>
> I wonder how much extra support circuitry it would
> take to use one of these instead of the regular
> BasicATOM Pro-28M? There's not much info on the
> website - anyone have any experience with these?
>
> Eric
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>