Hello,

Need help please.
What are the differences between ARM and other micros.
When should that use ARM or other micros? maybe it's not good question and difficult thing but
anything information from you is helpfull to me.
Thanks,

Andrea

 

Hi,

This is a hard question to answer, especially without knowing your requirement. At a very high level, ARM's are more like microprocessors, and PIC's are more like microcontrollers.

Can you be more specific about your need?

 

At a very high level, ARM's are more like microprocessors, and PIC's are more like microcontrollers.

Essentially, that is the core difference. This then leads to the following question: what are the differences between microcontrollers and microprocessors? For an introductory answer refer to this thread.

Dave

 

ARM's are more like microprocessors, and PIC's are more like microcontrollers.

I don't agree with this; most ARM chips have peripherals, just like other micros. I have a Phillips chip (LPC) right here with multiple serial - 2 UARTs, 2 I2C, 2 x 32 bit timers, ADC, and 512k of Program, and 32k static RAM. Phillips refers to them as microcontroller, and I'm sure the other makers of ARM refer to their products as microcontrollers.

I think the main difference is that ARM uses a 16/32 bit data bus, where other micros use an 8 bit bus.

I also find them quite a bit harder to use, and way more powerful than PICs or AVRs.

 

Definitions are bound to vary - the complexity of the ARM instruction set, especially compared to the PIC's, is what led me to make the statement.

 

hi,

Thanks for your helpfull information.

Can you be more specific about your need?

I finished my project last week. I posted this to know other micros and get helpfull information from you.

I think the main difference is that ARM uses a 16/32 bit data bus, where other micros use an 8 bit bus.

I also find them quite a bit harder to use, and way more powerful than PICs or AVRs.

What about AVR32?
What are the differences between philips ARM and other ARM? Instruction set ?
Are there pages in ARM, like in PIC ?

Andrea

 

To know learn more about the generic Arm, referring to the following book:

ARM System Developer's Guide
Designing and Optimizing System Software
ISBN 10: 1-55860-874-5

This is a very good book. Concepts are presented clearly. Arm is 32-bit based and provide more sophisticated features (as such memory protection mode: user moder, supervisor mode, etc) then the basic, say 8051, controller.