AVR-Chat

Hello Fred,

You might consider a atxmega32a4 ... it's available now ... has fast ADC and fast DAC ... will run 32Mhz on internal oscillator ... low power ... larger flash memory sizes will be available ... lots of other features and larger xmega processors available.

Jim

  ----- Original Message ----- 
  From: syberraith 
  To: AVR-Chat@yahoogroups.com 
  Sent: Saturday, November 07, 2009 9:46 AM
  Subject: [AVR-Chat] Looking for the Right AVR for my Project


    
  I am designing a guitar pedal effect and need a MCU to sample the signal, perform a non-linear function, then generate a control current.

  The project requires one ADC and one DAC these can be separate devices. 

  The non-linear function can be performed without a FPU using CORDIC routines. These would take a significant number instruction cycles to perform. 

  The function could also be performed with a look up table, which would require significant memory.

  I would like to have a sample rate as high as possible, 200K samples per second would be the highest desired, with 46K being the absolute lowest required. 

  I have been looking at 16 bit devices in the 30 MIPS range and up. Most of the ones I have seen with sufficient speed have been excessive elaborate.

  So, does anybody know on a simple device with enough speed for my project?

  Regards,

  Fred 



  

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