Lpc2000

> I did something similar some time ago with the LPC2106, with an 
AD557 DAC. 
> That was when I found the limitation on the GPIO speed, I couldn't 
generate 
> a higher frequency than I could with an AVR.
> 
> Leon 


Well, you're sure not going to implement a GHz digital radio, but 
it's fine for audio frequencies. I needed a fancy tone generator for 
a project -- it turns out to be damn near impossible to get the chip 
vendors who make melody ICs for cell phones to sell them in small 
quantities.

So for $5 the LPC2132 works well for audio (and you can play .wav 
files too).  If you slow it down the current is < 10 mA.

Tom