Re: can anyone recommend me a microcontroller

On Mar 26, 10:01 am, Tim Wescott <t...@xxxxxxxxxxxxxxxx> wrote:
On Wed, 26 Mar 2008 07:13:33 -0700, panfilero wrote:

I'm in need of a small microcontroller that has ADC and DAC capabilities
and PWM also but not much of anything else.... most the
microcontroller's I've found while trying to search for these criteria
are a little overkill...... an 8 bit or 16 bit would probally be fine,
low power would be great but ADC and DAC are the main things I'm looking
for... I've thought about a PIC but I've never used one of those.... and
hear that they are not programmable in C and have a small instruction
set.... any suggestions?


What's wrong with a small instruction set? More importantly, PICs (and
8051s) have instruction sets that are an awkward fit with C, but you can
get C compilers for them that work reasonably well. The Atmel AVR has an
instruction set that is small but is a very good fit with C -- it also
has wimpy drive pins and in the past has had a reputation for having poor
supply-chain performance, at least in small quantities.

Most anything you can get in an 8-bit microprocessor that has an ADC will
also have PWM output, a fair amount of timer resources, and no DAC per
se. You'll have to use the PWM output for a DAC, or use external.

I'd look at PIC, AVR, H8, and the many 8051-core micros out there. You
may want to find EDN magazine's web site and see if they've got a current
microprocessor directory -- that'll give you _lots_ of ideas for places
to look.

Tim Wescott
Control systems and communications consulting

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott

Hmm... so how big do I have to get before I start running into some
microcontrollers that include the DAC? Thanks for the EDN tip I'll
start checking there, I'm just having a hard time conducting a search
for what I need. thanks