Classification of Families

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Hi all,

I would like to check whether my understanding is correct, or please correct me:

Tiny AVRs are for low pin count, low power applications (like remotes)

Megas are big brothers, they are capable of doing more.

Am I right?

My application is a remote control, where the power comsumption is premium, and I require some 10 to 15 I/Os. Will any tiny variant suffice or can I go for any mega chip? or what do you prefer?

Thanks and regards,
Vignesh

Cheers,
Vignesh

If everything seems to be coming onto your way, then you are probably driving on a wrong lane..

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I agree on the low-pin-count side of things. They are generally cheaper. And fewer pins usually == cheaper to assemble.

However, in terms of power consumption, I'm not sure how the conventional ATtiny series chips stack up the pico-power ATmega chips. I don't think there are any PicoPower ATtiny chips available yet.

With 10 to 15 I/O, in the ATtiny series you'd need to use an ATtiny2313 or ATtiny26/261/461/861.
In the ATmega series you'd probably choose the ATmega48. ATmega48 will soon be available in a PicoPower variant.

You'd have to read over the datasheets to see how the active and standby current consumptions stack up. Unfortunately, the PicoPower ATmega48 datasheet isn't available yet.

I believe the active current consumption numbers for the ATtiny2313V and the ATmega48V are very similar.

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Oh, well thanks. PicoPower is something catchy. I saw devices, look promising.

Cheers,
Vignesh

If everything seems to be coming onto your way, then you are probably driving on a wrong lane..

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I will go with Mega48/88/168. The price difference between 2313 and M48 is minimal. The advantages of M48 are obvious. Additionally, should you need to add more functionalities, you have upgrade path as M88 & M168 for the same footprint.