UC3 is Legacy

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Atmel Corporation

Atmel AVR 8- and 32-bit Microcontrollers What's Changed

http://www.atmel.com/System/whats_changed.aspx?Products=010%20Atmel%20AVR%208-%20and%2032-bit%20Microcontrollers

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Product Selection Guide
(file size: 4.65 MB, 24 pages, revision A, updated: 11/2015)

http://www.atmel.com/Images/Atmel-45154-Product-Selection-Guide_Brochure.pdf (go to page 4, center, down and right a bit)

 

"Dare to be naïve." - Buckminster Fuller

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"UC3 is Legacy"

Has been for a while, I thought  ?

 

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I admit that I am getting old, crotchety and set in my ways., but I simply cannot cope with the bewildering range of ARM-based processors.
To me, there is *too* much choice in that area and a high risk that the model that suits my application today will not be available in 3 years time, hence requiring rework of hardware and software.
(quite a few of my past projects are supposed to have a 10+ year working life)

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Yes, There is an irony that MCUs like the 8051, have outlived some of the ARM cores claimed to replace it....

If you think choosing a long-term ARM is tricky, try selecting a Bluetooth module !