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The instigate question is response with the following phrase in my opinion:
"The 8 bit-MCU is sufficient for most requeriments?" ....I believe YES!!! And see the more and more features in modificated 8bit MCU architecture for long year ago...
gorkin
8 Bits CPU's are here TO STAY .. They dont need expensive and cumbbersome memory buses . There are requirements where the processing power is more than enough . And even for some cases where you need just an extra PUNCH ..there are now 8 bits CPUS running at 100 Mhs . That added to the fact fact that power requirements are sow low .
make them little all terrain general purpose logic controllers .
Some times i wonder if is really necessary in the PC world to go 64 Bits ..
I have a SUN WORKSATION and when i boot in 32 bits i don't notice any major and dramatic speed change!
8-bitters are going to be around for as long as they cost less to produce than the 16 and 32 bitters. And I think that means for a very long time. They are just going to get cheaper and cheaper. Now the low end chips are something like US$0.40 or so. That is still too high for a piece of silicon whose design is 20 years old. I believe in about 5 year time, the low end 8-bit mcu chips will be sold at lss than 10 cents a peice. When the PIC16C54 will be the same price as a 74LS245 as most of teh cost will be packaging and handling and silicon will be the cheaper component.
Yeah, 8-bit mcu's have future. Now the 8-bit's mcu's family have chips with large flash memory, good peripheral and speed up to 40MHz. I think these chips is best for control application.
15 years ago, the end of 8 bit processors was predicted by lots of people. It seems they were very wrong. I believe 8bitters will be with us for a very long time.
8-bit mcu is definetely enough for small electronic products and portable
gadgets, so low power consumption and display driving capability will be
the must features for future.
Some companies are still designing 4bit MCU's in their projects, because they are cheaper, have less power consumption, are more cost efficient.
For simple (and moderate complex) controlling application without high accuracy, wide architectures won't have a performance advantage. their 16/32/64 bit architecture is most of the time not used. So they are expensive, will consumpt a lot of power without doing anything.
For general purpose applications or rapid prototyping bigger and faster might be better to have a fast result about - it's possible or not.
But for cost efficient solutions even more complex problems can be adopted to run on a 8bit machine.
I strongly believe the best 8-bit MCUs in the furture will be the one with the highest level of integration with analog funtionality. This is a foundation well laid by Cypres's 8-bit mixed signal PSOC. Imagine a tiny 8-bit MCU controlling all the functions of a vending machine and when the whole world is asleep it will reconfigure itself and function as a "dialup modem" for the purpose of updating its inventry for next days "vending work". HOW C 8) 8)L IS THAT?
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