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Microcontroller & Add and Multiply instruction

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Maverickmax

Maverickmax

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ez80 multiply instruction -cp/m -cpm

Greeting

Does anyone know which microcontroller is suitable and cheap for caryying 'add and multiply' instruction per cycle?

Also how can I work the precise time per instruction cycle out? For example I want a processor to complete the process such as a large number of 'add and multiply' instructions within 4 seconds.

Thank in advance

Maverickmax
 

I think MSP430 from TI is exactly what you need. They are prety cheap and some versions have a hardware 16x16->32 multiply/accumulate unit (as a memory-mapped peripheral).
 

Add and multiply do you want to do FFT ?
cheapest timi consuming devices for such thing is dsp chips. you may select a cheap dsp chip for your purpose
 

Aye

Im thinking of using it also cross-correlation and convolution.....

I understand DSP Chip can be cheap but what about the cost of gettting a software envirnoment for programming and compiling?

Maverickmax
 

You are absolutely right, it was suggestion if you have budget . microchip has dsPic series i never used them before , dsPICDEM 28-PIN Starter Demo Board about 65 dollar.
 

Bilkeegan

According to my budget, I have only about 30 quids which is about $57 so It would be great for me to buy cheap chips and a free software.

So any suggestion?

Maverickmax
 

you can use freescale 56f8300dsk demo board.
its cost 79$...
there is plenty of alternative in freescale dsp..
56f800 and 56f8300 family...
just look at the web site:
www.freescale.com
to program these chips you need metrowerks codewarrior IDE. it supports free 8*16 bit c and unlimited assembly..
 

PSoC microcontroller has 8x8 signed Multiply and Acumulate unit.
 

You can try using Zilog eZ80 microcontrollers.
 

The dsPIC30F series of micros are well worth a look. They are 16 bit micros that can clock at up to 120MHz. Mplab is a free download and there is also a c compiler that has a 60 day free demo version you can try. The c compiler has a dsp math library and also libraries for the peripherals.
I have just started to use them and they are pretty mean mothers.
 

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