ARM controller with integrated DAC

>You can get a small CPLD (need milk^H^H^Hemory) for $1, couple with an
>external sram (free).  You can pull sram chip out of any old
>motherboard (or module).  Add an op-amp for 50 cents and you can build
>the whole thing below $2.
Hi,
looks like an ARM is a good fit then.
Thanks
M'

Hi Hamilton,
>> On Aug 18, 8:18 am, Michael Keith<mjke...@gmx.de>  wrote:
>>>
>>> we didn't consider an FPGA. Our intention was to use an ARM (or a
>>> similar processor).
>>> Reason 1: familiarity
>>> Reason 2: price tag $1 - $2
>
>
>The OPs goals are not possible.
with a small ARM things look quite promising.
M'

> looks like an ARM is a good fit then.


 Yes, if you can live with whatever speed results.
ie if DMA works ok for Size/Data rate.

 5 Bits is ok from processor ports, tho you could add a Logic buffer
device, if you want less Vcc noise.

 A second step would be a 2nd chip, for the DAC-handling.

 That could be either a separate processor, or you could use a small
CPLD, to push your 5bit port rate to a 16bit port Mux'd 3 ways, and
treble your workable DAC speed.

-jg