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RE: [avr-gcc-list] After ATMega

From: Trampas
Subject: RE: [avr-gcc-list] After ATMega
Date: Thu, 13 Oct 2005 14:32:30 -0400

The TMS320F28xx is great part but the cost for entry is high $500 for
compiler and about $1000 for JTAG. 

I would personally go with a ARM 7 as that it is the next step up from an
AVR. The TMS320F28xx is a step above the ARM 7s but also has more power
consumption to go with the higher processing power. 

There are lots of options for ARM 7's from Atmel and others. 


-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf Of Galen
Sent: Thursday, October 13, 2005 11:44 AM
To: Eric Pasquier
Cc: address@hidden
Subject: Re: [avr-gcc-list] After ATMega

Eric Pasquier <address@hidden> wrote:

> Dear All,
> I am using an ATMega32, 16MHz to implement a Kalman filter (7 input
> I suceed to run it at 60Hz, but with lots of optimization and
> compromises, like using fix floating point math for example.
> ADC, timers, serial, I/O are used.
> I would like to have more capacity for calculation (about 6 times),
> but I need to stay at almost the same frequency for Timers (PPM read
> and Servos commands).
> What new MCU can I use ?
> - Atmel have AT91SAM7 series: about 50Mips (only 3 times)
> - others ?

The AT91SAM7 parts are 32 bits, so I believe you would see more than three
times improvement.  That said, I think a DSP part might be a better choice,
given what you are implementing.  I'd look at the TI TMS320F2801.  


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