Are ATTINY22 alive?

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I was not able to find (worlwide) ATTINY22L.
These parts are pointed as substitutes of AT90S2343 when running using internal RC osc., but there in no lead time when tring to purchase them :+(
Who have had experience, 2343 hangs (almost 1 time) when powerd, so you need to switch power down and up again to see your program to run, due to INTERNAL/EXTERNAL osc understandability conflict. ATTINY22 is the best workaroud but...Unfindable!

Let me know...

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Do not hold your breathe too long.
Could be either late 2001 or early 2002.
But then again they could surprise us.

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The Tiny 22 is listed in the list of available types at the german distributor Reichelt. See www.reichelt.de for the list. I have no clue if it is really available when you try to order it, but at least they claim to have it.
BR Herbert

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Hi Herbert, thanks for the sign. Unfortunatelly I cant speak German (English also, you see:-), so I was not able to understand about availability in stock (I suppose that "notieren" means "no stock").
At any rate, happy AVR community, 7.51 DM each ATTiny22L is about 5 times the real price (see DigiKey online shop)!
Fabrizio

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Remember that the Tiny22 was released but then pulled from production so there is probably some stock still remaining out there.
The rumoured reason was that it would go through a die-shrink and become more cost-effective.
You cannot always trust literature. Take for example the Mega603. Never done and not planned for the immediate future. However 8k, 16k and 32k MegaAVRs are planned.

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The data sheet was removed. So I assume, the chip too.
Maybe its an dubious method to remove bugs, since I see
the hanging state also on the tiny22.

Peter

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Hi,

No, it's not a dubious method of removing bugs. The device is simply not available. If you need a device with the spec of an ATtiny22, you can use an AT90S2343. It's identical, provided you read the errata sheets.

Morten, AVR tech. support

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Hi Morton,

thank you for this information.
But why the data sheet was removed from the web ?

Also, why different names given if ATtiny22 and AT90S2343 are identical ?

I like such small 8 pin devices.
Is there planned an ATtiny22 + ATtiny15 = ATtiny25, means a tiny with 4 channel ADC but SRAM and Flash equal to the tiny22.

It sounds curious, if you have 4 channel ADC and many other peripherals, but no SRAM to work with it.

Also on my experience with the AT90S1200 I have seen, that a 3 level hardware stack was to less, especially on using interrupts. You must only write straight forward code and avoid any call like fire.

Regards,
Peter

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Hi,

I think the data sheet was removed from the official Atmel website because the part is not available yet. The availability of such a document creates a demand for this not yet released product.

The ATtiny22 is an update of the AT90S2342. Some erratas have been corrected, and the main difference is that the tiny22 is tested for internal RC oscillator, while the '2342 is tested for external clock.

I cannot comment on future or planned parts. I'm only part of the technical support team, but your feedback is duly noted.

Best regards,

Morten, AVR tech. support