AVR-Chat

----- Original Message ----- 
From: "syberraith" <syberraith@yahoo.com>
To: <AVR-Chat@yahoogroups.com>
Sent: Monday, November 09, 2009 6:03 PM
Subject: [AVR-Chat] Re: Looking for the Right AVR for my Project


>
> I see I need to clarify some things.
>
> This is a compression only effect,  It has two states, on an off.  The 
> lookup table would be for a transcendental function, which could also be 
> done with a iterative process that would take up less memory but more 
> instruction cycles.
>
> Yes, dsPICs look promising.  I've been looking at PIC30s and PIC33s, which 
> run at up around 30MHz.  The trouble with them is that they come with a 
> lot of communication peripherals that I lack any need for such as Ethernet 
> or USB etc.  The basic MCU for those is a PIC24 that I think only runs at 
> 16MHz.
>
> I could just as well use a 32 bit device.  Lots of AVR models there with 
> the the same selection problem.
>
> Being new to MCU and out of practice with coding.  I do need to look at 
> what's been done before in similar projects.

You can get dsPICs with minimal peripherals - see the Microchip MAPS 
selector. The newer ones deliver 40 MIPS, and are very cheap. I'd choose a 
dsPIC over a PIC24 because of the DSP functionality.

Leon