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help with selection of microcontroller

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sijincool

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hi i am looking for a cost effective and smallest micro controller (atmel or pic)

which has got useful 10 pins(excluding other chip support pins like Vss,Vdd,OSC)
including 4 channels ADC.


i went for pic 16f873A
as i think this is the smallest pic with adc.

using additional adc chip wont help much in case of cost.

if there is any other options kindly inform me.

Added after 1 minutes:

sorry i meant smallest not in terms of space occupied.
 

Hi
PIC:
16F676, 14 pins, 8 ADC, Vdd, Vss, MCLR and 11 useful pins (if you use internal oscillator, else you need to go to say 18F1220 or 16F690).

AVR: Best fitting choice is Attiny24 (2k program, Attiny44 for 4k and Attiny84 for 8k), 14 pins, 8 ADC, Vdd, Vss, Reset can be used as output (unlike PIC) and 12 useful IO with internal osc, 10 with external.

But it comes down to which you are familiar with and can program. I feel the Attiny24 is the best choice here, although the decision is upto you.

Hope this helps.
Tahmid.

Added after 49 seconds:

i went for pic 16f873A
as i think this is the smallest pic with adc.
Click to expand...
Even 8, 14, 18 and 20 pin PICs have ADC, it's upto you to decide which suits you best.
 

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    sijincool

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i will suggest you go for pic16f84 made by microchips or at89c2051 made by atmel. incase you have any challenge, u can contact me at the forum
 

I like the pic16f88 with those small tasks... you got a clean 8 bit port, plus 5 bit (up to 7 or 8 if you use the internal oscillator and disable MCLR) with ADC...
in my opinion, the best for your needs...

also check the pic16f676 using the internal oscilator you can get your 10 pins, (but i'm not sure about the amount of adc channels... check the datasheet it's worth!)
 

In microchip website, they have an excel sheet that describes all their chip sets and their components.
It will make your section process faster.
--
Amr
 

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    sijincool

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