Which tiny?

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When designing new controller boards, we tend to use the same old MCU's, usually a M48 family or the T25 family. Sometimes though, we need just a few more IO pins then what the T25 has. What do the freaks choose when they are in this situation? T24,T26..... T1634?
I'm not looking for whats best, as that will change with the requirements, just looking at what others usually reach for when the need arrives.

TIA
JC

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Volume? IOW is cost an issue?

If cost is not an issue I'd go for the "top of range" device there which presumably means 1634 which should be adaptable to most applications where a tiny is required.

If you are cost engineering things then obviously use Atmel's product selector:

http://www.atmel.com/v2pfresults...

to pick the cheapest thing that delivers all the functions you actually require.

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Quote:

Volume?

I think that is important as well. For a low-volume one-off design/build and if you have M48 on the shelf then the end result might be "best" just using those.

Other than that, pick the model that best suits your criteria for that particular app. Pins, peripheral set, cost, availability, ...

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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does size matter? if not develop on M48 and use T48.

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Quote:
What do the freaks choose when they are in this situation?

Dirt Cheap uCs
3chec

No RSTDISBL, no fun!

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Quote:

does size matter? if not develop on M48 and use T48.


Size? Wouldn't M48 be same size as T48?

T48 is indeed less expensive than M48. But IME be careful--wimpy pin drive, and the M48 stuff that is stripped-out may be irksome.

IME the choice depends on needed pin count and needed peripheral set. Depending on volume and type of app, cost may be important.

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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A bit of browsing thru the product selector helped, it looks like the T24A is about the same price as the T25, adds the needed pins in a 14 or 20 pin package. That should do the trick. Alternates are the T261A or T1634 at a higher price points and larger packages.
Thanks
jc

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So what was the volume?

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clawson wrote:
So what was the volume?
11?
;)

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