With the Arduino, every single piece of the puzzle is open: you can buy parts anywhere, rearrange them as you need, improve or modify the firmware AND the development tools. So every parameter becomes important when it comes to selecting a microcontroller. The Arduino contingent has also benefited greatly from the reasons which made the AVR something of a defacto standard for hobbyist things - a mantle it's been taking over increasingly from PIC even before arduino made its appearance. It's a processor with a very specific task - to allow the implementation of MPEG codecs on reasonably priced silicon with a very good MIPS/W figure to allow for long battery life in handheld devices. They are typically single threaded, real time devices, where an ARM would be very wasted. All boards are tested with the same code. Once you start needing >20mhz speeds, you really should be looking at a custom setup (ymmv of course)That said, for the target use case of the Arduino, it isn't like you are slumming it. ARM's are more expensive, require higher part counts, consume more energy, make for more complicated code, need more expensive fabrication processes. There will likely not be many other tools. some may not offer a open collector io pin with a weak pull up and you would have to put hardware outside the chip to interface to something, where another may have that available on one or all of the pins.
There are also far more learning resources for the ARM if you're new to both families.The toolchain support for the AVR32 is very weak compared to ARM.Yes IAR is committed to supporting it, but even IAR didn't seem very excited by the AVR32 at ESC. - The toolchain takes additional work to setup. So there is some risk in designing in an AVR32 part if your product has a long life cycle.I was wondering about this point myseld.I think atmel have been good with pin for pin replacements and they must have invested a lot into this. Just designing the thing should be fun. I am going to use the same categories Ladyada used in her “PIC vs AVR” smackdown, with a few differences. Maybe this is one of the benefits of ARM cores..Sorry for being out of discussion, how much is an AP7000?AVR32 does seem just what i need for my graduation project. Search Forums; Recent Posts; Scroll to continue with content. I don't believe it is positioned as a universal 32 bit CPU core in the same way that the ARM7/9/11 core is. The AVR's direct competitors would be the PIC and to a degree the MSP430, which is gaining traction owing largely to TI's heavy marketing push combined with its subsidizing tools.Chicken and egg, but especially during the last few years (2007 ARM launched Cortex-M architecture), 32-bit MCUs have grown in popularity and vendors have been better at providing faster and easier access for the EE community when designing in >8-bit micros (better sw tools, free tools, more examples...).And now an ARM in a DIP package.I really like the Freescale Coldfire for high end boards. - Makes interfacing slightly easier. I also talked to most of the big players in ARM (i.e. Discussion in 'Microcontrollers, Programming and IoT' started by abhimanyu143, Nov 27, 2014. Are there any good resources describing these techniques and good practices?No, I don't think it's possible to get all pads to the outside while keeping good connections to power and ground. Really). Using 8 or even 10 layers would make routing a lot easier :-)The BSP for the STK1000 includes schematics of both the STK1000 (the board which has the LCD, ports etc) and the STK1002 (CPU, clocks and some other stuff).I talked to Atmel at length at the Embedded Systems Conference last month about the AVR32. I was looking for primes with my Arduinos. Do you think you will keep it to 4 layers?ARM devices are likely to be lower cost than the AVR32 (especially from Philips who is now selling feature rich ARM devices for well under $2 USD). Nov 27, 2014 #1. abhimanyu143. It is a natural fit as the 8 bit killer, can get much better performance than an 8 bit for the same size, price, etc. The PIC was just painful in a lot of ways, the avr tools were there, programming was a breeze and didnt cost you much more than some wires and a connector from radio shack. You don't need more than one UART or more than one SPI on what is meant to be a cheap, generic platform. If you've something that you can do with an AVR, then why would you want to do it with an ARM? In other words it's an "iPod beater". 6 layers are probably the minimum. Not all of them are good. Your question, though, had to do with AVR vs ARM. Programme sind binär-kompatibel zu "größeren" Cores, ein für einen Cortex-M0 kompiliertes Programm kann also auch von einem Cortex-M7 ausgeführt werden.Der Standard ist für Cortex-M-Mikrocontroller skalierbar: Von der kleinsten 4 KB MCU bis zu MCUs mit anspruchsvoller Kommunikations-Peripherie wie Ethernet oder USB. It's hard to compare ARM to AVR.
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avr vs arm