High-end AVR vs. low-end ARM?
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From: Ulf Samuelsson on 7 Nov 2008 14:17 >>As for AVR32, in case you were thinking about that one, there is no >>real reason I would know why to start with that device. Use a Cortex- >>M3 device instead the upcoming standard. Let's see, Where do I get the Cortex-M3 flash chip with * Lower power consumption than any existing Cortex-M3 chip * Single 1,8V +/- 10% power-supply for CORE *AND* I/O? * 5V VCC , desirable for motor control? * debug support allowing you to read/write internal registers without stopping the MCU. * High Speed USB * Free Eclipse/GCC tool directly supported by the silicon vendor * Sustained 33 DSP MIPS when doing vector sums for(sum=0; i = 0; i < n; i++) sum = sum + C[i] * X[i]; * Migration path to low cost versions supporting Linux. * Same H/W tools as the AVR (JTAG-ICE Mk II & STK600) * Trace capable emulator at below $600 (AVRONE) Googling does not give any clue... -- Best Regards, Ulf Samuelsson This is intended to be my personal opinion which may, or may not be shared by my employer Atmel Nordic AB
From: Jim Granville on 7 Nov 2008 16:11 Ulf Samuelsson wrote: >>>As for AVR32, in case you were thinking about that one, there is no >>>real reason I would know why to start with that device. Use a Cortex- >>>M3 device instead the upcoming standard. > > > Let's see, > > Where do I get the Cortex-M3 flash chip with > > * Lower power consumption than any existing Cortex-M3 chip > * Single 1,8V +/- 10% power-supply for CORE *AND* I/O? > * 5V VCC , desirable for motor control? > * debug support allowing you to read/write internal registers without > stopping the MCU. > * High Speed USB > * Free Eclipse/GCC tool directly supported by the silicon vendor > * Sustained 33 DSP MIPS when doing vector sums > for(sum=0; i = 0; i < n; i++) sum = sum + C[i] * X[i]; > * Migration path to low cost versions supporting Linux. > * Same H/W tools as the AVR (JTAG-ICE Mk II & STK600) > * Trace capable emulator at below $600 (AVRONE) How much flash, with the above combinations ? -jg
From: Ulf Samuelsson on 7 Nov 2008 16:18 "Jim Granville" <no.spam(a)designtools.maps.co.nz> skrev i meddelandet news:4914aeba$1(a)clear.net.nz... > Ulf Samuelsson wrote: > >>>>As for AVR32, in case you were thinking about that one, there is no >>>>real reason I would know why to start with that device. Use a Cortex- >>>>M3 device instead the upcoming standard. >> >> >> Let's see, >> >> Where do I get the Cortex-M3 flash chip with >> >> * Lower power consumption than any existing Cortex-M3 chip >> * Single 1,8V +/- 10% power-supply for CORE *AND* I/O? >> * 5V VCC , desirable for motor control? >> * debug support allowing you to read/write internal registers without >> stopping the MCU. >> * High Speed USB >> * Free Eclipse/GCC tool directly supported by the silicon vendor >> * Sustained 33 DSP MIPS when doing vector sums >> for(sum=0; i = 0; i < n; i++) sum = sum + C[i] * X[i]; >> * Migration path to low cost versions supporting Linux. >> * Same H/W tools as the AVR (JTAG-ICE Mk II & STK600) >> * Trace capable emulator at below $600 (AVRONE) > > How much flash, with the above combinations ? > > -jg > The full combination does not exist. Just listed some properties, that could make people want to think twice about focusing 100% on CM3. UC3L = 1.8V VCC UC3C = 5V UC3A3 = High Speed USB UC3B & UC3L should be lower power than CM3 UC3A/C has 66 MHz operation and thus 33 DSP MIPS AP7 runs Linux, Need Cortex-A8 for this and that ain't cheap. In the end, it will be the right combination of peripherals which will be key to the decision. -- Best Regards, Ulf Samuelsson This is intended to be my personal opinion which may, or may not be shared by my employer Atmel Nordic AB
From: Ulf Samuelsson on 7 Nov 2008 19:19 "Clifford Heath" <no(a)spam.please.net> skrev i meddelandet news:4914cc31$0$4449$afc38c87(a)news.optusnet.com.au... > Ulf Samuelsson wrote: >> Where do I get the Cortex-M3 flash chip with >> * Lower power consumption than any existing Cortex-M3 chip > > Well, duuuuuh. It's an impossible question! Yep, but I think people get the hint ;-) -- Best Regards, Ulf Samuelsson This is intended to be my personal opinion which may, or may not be shared by my employer Atmel Nordic AB
From: Clifford Heath on 7 Nov 2008 18:15
Ulf Samuelsson wrote: > Where do I get the Cortex-M3 flash chip with > * Lower power consumption than any existing Cortex-M3 chip Well, duuuuuh. It's an impossible question! |