Hello everybody..I hope you pupil have great time.. Actually we are using 8051 8 bit controller for our weighing scale product since 15 yrs.. External ADC,external USB,external RTC etc .. Now need to go with ARM to taste the new technology.. I'm a debut in ARM..So pls give me some ARM family details which must have internal features like USB support, LCD, UARTS more than 3 and as usual SPI /I2C interfaces.. and also camera support.. And i heard that Atmel ARM processor have inbuilt Zigbee? Is it so?? Therefore,i need the features of ARM processors which makes our circuit design in compact..
Yes.. i really need camera interface.. Thank you for your links..
He's talking about commercial/industrial applications, not baking scones!
So, consider that the packages/items will have barcodes, part numbers, order numbers, or addresses on them.
They might need to move the scale or place it away from the computer/printer, cables get it the way or get damaged, or are too short.
That said a design engineer should be able to determine if Atmel sells a zigbee part, and what kind of chips and dev boards are available.
What kind of load cell and ADC are being used now, what's the voltage range and precision? 12-bit 16-bit?
"Now need to go with ARM to taste the new technology"
Do the users of weighing scales even know - much less care - what microcontroller is inside?
It's more usual to base the processor choice on specific product requirements rather than the engineer's desire to play with new toys...
You're inferring too much design knowledge, it translates to someone designed this 15 years ago, has left, and we can't buy the parts any more. All our competition is using newer, and cheaper technology, and the Chinese products are far better. Our customers are buying these other products, and not ours, and it's nearly 2013Q4
Thoroughly understand the current design, review current Cortex-M3/M4 parts that have your minimum features, buy a couple of dev boards and experiment. When you have enough knowledge to make a selection that works for you, do so then.
Yes you are absolutely right!! I'm dealing with S-type Load cell.. Itz sensitivity is 2mv/V.. The ADC for this is 16 bit resolution.. I'm not expect zigbee in my module.. Itz just asking.. And will the ARM processor comes with GSM/GPRS facility??If it is,its more convenient for me.. ARM cortex M3 provides me the basic features..Is it ok for me expectation??
Hi Mr.Andrew Even though itz not new.. But for us it is new try in our board.. Because i won't need much features.. thatz what i stopped with 8 bit itself..
Because i won't need much features.. thatz what i stopped with 8 bit itself..
HUH
you want a uC with more features (unavoidable when switching from '51 to ARM) "Because i won't need much features"
BTW SILabs has '51s with more features than some ARMs
Erik
Radios include GSM are typically implemented as separate modules, not least for simple integration and certification issues. I don't think anyone in your position would implement a chip level GSM/GPRS/CDMA/EVDO or WiFi solution, the vendors just laugh at us. They'd expect you to have a lot of volume (huge), and a lot of RF experience. Consider options to socket the modem on a daughter board, so as to allow for multiple standards, multiple vendors and obsolesce or design cycle replacement.
Look at your current design and decide what you can/cannot integrate into a denser ARM part. You're likely to have to retain your external ADC (24-bit, I2C ?), the ADC on general purpose micro-controllers are designed for utility not precision, usually about 12-bit and hard to separate cleanly from digital logic banging around at 60-200 MHz (or whatever).
Take a look at the STM32F2 and F4 series parts, have external buses for smart LCD panel integration, USB, and a DCMI camera interface. Plenty of serial ports for wireless modems, etc.
There are still plenty of current, low-cost 8051-based devices available...