AVR or ARM

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sofia

Joined: 10 Jan 2005
Posts: 8

01 Feb 2005 18:09 avr 32 bit replace arm

Hi..i have worked on atmel micros (89c51, 89c52), now i want to work on new family of micros introduced by atmel (because of high speed, builtin ADC, USB support etc). I wanna ask that which are the best....atmel AVR or atmel ARM. offcoarse i will do only one of them inorder to get strong grip. I know that AVR are of 8 bit and ARM is 16 or 32 bit.

Ace-X

Joined: 25 Jan 2002
Posts: 590
Helped: 26

01 Feb 2005 18:39 avr32 or arm

Depends on requirements of your project. If you select ARM, I would suggest to start with LPC from Philips (ARM7). They have build-in Flash and RAM, many peripheral options are available. And the most important - they are very cheap - starting from less than 4$ for LPC3131.

7rots51

Joined: 17 May 2002
Posts: 1427
Helped: 14

02 Feb 2005 13:56 avr vs arm

atmel AT91SAM7 series is similar to philips pats and used the same ARM7 core,TMS470 series from TI have ARM7 core and these there companies provide low cost and high performance 32 bit micros,I think AVR is suitable for small projects and a good replacement for 8051 and 8 bit micros,but for larger projects that need RTOS,FS,TCPIP,USB,...... it is better and simpler to use ARM7 based micros.

elcielo

Joined: 13 Jun 2002
Posts: 854
Helped: 6

02 Feb 2005 14:09 avr 32bit projects

Philips ARM processor is good.

SphinX

Joined: 25 Jan 2002
Posts: 1069
Helped: 28
Location: EGYPT

02 Feb 2005 15:21 atmel avr 32 vs arm

elcielo wrote:

Philips ARM processor is good.

Salam,

How is good ? Please list some features !!!

Ace-X

Joined: 25 Jan 2002
Posts: 590
Helped: 26

02 Feb 2005 19:05 arm7 60mhz vs avr

Features depend on specific model. There are about 20 models in ARM line from Philips.

For example, here are features of LPC2131 (the cheapest one):
- 32 Kbytes of internal Program Flash (512 Kb in LPC2138)
- 8 Kbytes on-chip data SRAM (32 kbytes in LPC2138)
- up to 60 Mhz
- ISP/IAP
- 8 channels 10-bit ADC
- 10-bit DAC (LPC2132/2138)
- two 32-bits timers
- 6 channels PWM
- watchdog
- on-chip RTC with independent power
- two UARTs, two I2C, SPI and SSP
- on-chip crystal oscillator (from 1 to 30 Mhz)
- enhanced power-down system with peripheral turn-off
- 5V-tolerant inputs
- 3.0V-3.6V single power supply
- LQFP64 package

Cost is $3.9!!!

DigitalScholar

Joined: 03 Jan 2005
Posts: 16
Helped: 1

02 Feb 2005 21:07 comparing arm and avr

Another very good ARM processor is Samsung's KS32C50100. Its a 16/32-bit ARM and comes with a very good support and documentation. The reference board Evaluator7T is indeed very good as well. So consider this one as well.

vdaniel

Joined: 08 Oct 2004
Posts: 216
Helped: 9

03 Feb 2005 7:12 compare avr and arm

I will recommend to look to www.keil.com.
They have an excellent and cheap evaluation boards, very nice free soft and very good support. Everything one need to start.

Varuzhan

dainis

Joined: 15 May 2001
Posts: 1451
Helped: 56

03 Feb 2005 8:06 avr arm vs phillips

DigitalScholar wrote:

I also using this CPU (S3C4530), but all Samsung "Network CPU" now is discontinued products, and available till 2005.10 .....

ahsan

Joined: 24 Jul 2004
Posts: 46

05 Feb 2005 4:26 avr versus arm what is the better

ARM micros are the best.....If u have a choice to choose between ARM and AVR and u want to do any ONE of them, then i suggest u to learn ARM. ARM micros can be used for big/complex projects and it can do every thing (as far as i know) that AVR micros can do but AVR can not do every thing that ARM can do.

aetosa

Joined: 18 Jan 2005
Posts: 29

24 Feb 2005 9:45 avr code profiling space program size

I'm looking for a schematic for 2 simple programmers for 2 ARM7 uP: Philips LPC2131 and Texas Intstuments TMS470. Thank you for helping.

ntfreak

Joined: 22 Feb 2002
Posts: 193
Helped: 5
Location: UK

25 Feb 2005 0:32 does avr support arm

I have been using the ST STR71x ARM7 range for the last 8 months, I would recommend this range of devices, The pricing of these is very good, especially with the features/flash size.

Regards
NTFreak

7rots51

Joined: 17 May 2002
Posts: 1427
Helped: 14

26 Feb 2005 13:05 avr vs arm processor

Is there any online site that sells ARM7 micro(Atmel SAM7,TI TMS470,Philips LPC,ST STR71) at reasonable price?

I can not find a good online distributor .

jdhar

Joined: 16 Aug 2004
Posts: 261
Helped: 13

26 Feb 2005 17:28 arm str71 price

Aren't dev tools for ARM's really expensive?

ntfreak

Joined: 22 Feb 2002
Posts: 193
Helped: 5
Location: UK

27 Feb 2005 0:50 avr to arm

with the availablility of gcc compiler and wiggler type debugging interface you can start developing for arm cheaper than most micros, including pic.

Regards
NTFreak

donkey41

Joined: 19 Feb 2002
Posts: 91
Helped: 2

28 Feb 2005 5:56 at91sam7x iap

hello there,

as Ace-X presented some features of lowest ARM µP model and a free gcc compiler, informed by netfreak .. it seems, that microchip's PICs are simply not the question !?!
i dont mean that because i am a fan of PIC and os want to have it in every project / problem / task .. but if a lower-range ARM costs about $4 and it is a 32 bit µP being so peripheral rich .. i wont even think about using PIC 18s in reletively big projects !! or am i missing somthing ?

btw .. untill now, i differentiated µC with µP in the way that the formar has a program space and the later don't because it uses external storage device (eeprom, HD), while later has mless prepherals than formar (usually).
after reading the spec (LPC2131 - 32 Kbytes of internal Program Flash.. FLASH!!) ... i am almost lost .. HELP !!!!

mitesh

Joined: 13 May 2002
Posts: 288
Helped: 6

01 Mar 2005 6:14 avr vs arm processors

Atmel ARm "SAM7" series is good and low cost compare to all other ARMs , will cost 5$ for 1K qty

ntfreak

Joined: 22 Feb 2002
Posts: 193
Helped: 5
Location: UK

01 Mar 2005 15:49 Re: AVR or ARM

Not always, we have received better pricing for the ST str71x family - with more perpherals memory/ram.

Regards
NTFreak

artem

Joined: 22 May 2003
Posts: 1652
Helped: 91
Location: Turan

01 Mar 2005 16:02 AVR or ARM

As far as i understand these arm micros are destined to replace avr alike capabilities micros . Their ram and flash are fixed and are not subject to extension via external memory. DId someone compare program code and ram utilization for same application compiled for avr (or any other conventional 8 bit micros) and one of the arm processors menti8oned here ?

ntfreak

Joined: 22 Feb 2002
Posts: 193
Helped: 5
Location: UK

02 Mar 2005 13:12 Re: AVR or ARM

The str7 family is available with embedded flash and external emi interface and mmu (str72x family).
We have also been told thet are releasing an ARM9 variant to the mass market with onboard ethernet.

Its strange really st have been using arm cores for about 4-5 years for oem and have finally released to the mass market.

Regards
NTFreak

ezpcb

Joined: 02 Mar 2005
Posts: 202
Helped: 5

02 Mar 2005 13:57 Re: AVR or ARM

Which one is better? it's difficult to answer. I think you should choose the right one based on your detail requirements.

Mike

-------------------------------
www.ezpcb.com

quacklamack

Joined: 07 Dec 2001
Posts: 28

03 Mar 2005 14:13 Re: AVR or ARM

Where can you buy ST STR71x? Arrow and Silica apparently do not carry them. Nor Farnell or RS.

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03 Mar 2005 14:13 Ads

ntfreak

Joined: 22 Feb 2002
Posts: 193
Helped: 5
Location: UK

03 Mar 2005 18:27 Re: AVR or ARM

I get them from www.anglia.com in the uk - they are available in production quantites. The first run of 100 boards has just been done.

Regards
NTFreak

jinboqiu

Joined: 25 Nov 2001
Posts: 39
Helped: 2

29 Apr 2006 5:51 Re: AVR or ARM

Today there are more and more ARM based controller,but there are so many hardware bugs be found in TMS470, LPC2xxx and MAC7100. But I can not see the erreta data of STR71x or STR73x ,why? It means ST have more reliable product design for ARM based controller?