Mega 2560 stock status & Compatibility of ATmega2560 8-bit and AVR UC3 32-bit.

Other Hardware 3rd Party Boards
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Being new to Arduino experience, I have the following questions.

  1. Given the following stock statuses:
    Arduino’s Mega 2560 Rev3 (MPN: A000067), is currently sold out. https://store.arduino.cc/usa/arduino-mega-2560-rev3
    Adafruit’s Arduino Mega 2560 R3 (MPN: 191), is showing discontinued. Arduino Mega 2560 R3 (Atmega2560 - assembled) : ID 191 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits
    Digi-Key’s Board MCU Mega2560 (MPN: A000067), is showing in stock. https://www.digikey.com/product-detail/en/arduino/A000067/1050-1018-ND/2639006

Is there an ETA for your restock or will an enhancement or new version be released, for instance Rev4?

Does Digi-Key receive stock from Arduino ?

  1. Given the following Atmel AVR part numbers and descriptions:
    Arduino has libraries for display, 3D stepper motor & sensors.
    megaAVR Microcontrollers
    ATmega2560 08-bit AVR Microcontroller, 256KB Flash, 100-pin

32-bit AVR UC3 Microcontrollers
AT32UC3A1128 32-bit AVR Microcontroller, 128KB Flash, 100-pin
AT32UC3A1256 32-bit AVR Microcontroller, 256KB Flash, 100-pin
AT32UC3A1512 32-bit AVR Microcontroller, 512KB Flash, 100-pin
Can the UC3 Microcontrollers share the 8-bit libraries?
At this point I do not know it these libraries exist for the UC3 line but maybe someone knows.
Why, at some point, I was thinking about using the Atmel’s Dev Kit for AVR/AVR32 (ATSTK600) which can use both microcontrollers.

Thanks, Jim

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JimF-STL-MO:
will an enhancement or new version be released, for instance Rev4?

No, Arduino just sucks at keeping their products in stock. But never fear, the Chinese clone/counterfeit suppliers are always on their game and happy to pick up the slack.

JimF-STL-MO:
Can the UC3 Microcontrollers share the 8-bit libraries?

Well first of all you would need to find or make a hardware package to add support for those parts. I'm not aware of one.

After that you will find that some libraries can be used as-is but others are written for specific hardware and will need to be ported.

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Can the UC3 Microcontrollers share the 8-bit libraries?

The UC3 ("AVR32") microcontrollers are VERY different and not-at-all compatible with the AVR8 chips used in Arduino.
The step up from AVR8 these days is ARM (Atmel SAMx, for most official Arduino boards.)