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Download AVR Studio 4.19 with AVR Toolchain 4.19

Atmel Corporation is a worldwide leader in the design and
manufacture of microcontrollers, capacitive touch solutions, advanced
logic, mixed-signal, nonvolatile memory and radio frequency (RF)
components. Leveraging one of the industry's broadest intellectual
property (IP) technology portfolios, Atmel is able to provide the
electronics industry with complete system solutions focused on
industrial, consumer, security, communications, computing and
automotive markets.
AVR Studio supports the complete range of ATMEL AVR tools and each
release will always contain the latest updates for both the tools and
support of new AVR devices.
AVR Studio 4 has a modular architecture which allows even more
interaction with 3rd party software vendors. GUI plug-ins and other
modules can be written and hooked to the system.
The following additional devices are supported by simulator2 in AVR
Studio 4.19:
* ATtiny24 / ATtiny24A
* ATtiny44 / ATtiny44A
* ATtiny84 / ATtiny84A
* ATtiny26
* ATmega8 / ATmega8A
* ATmega16 / ATmega16A
* ATmega32 / ATmega32A
* ATmega64 / ATmega64A
* ATmega2560
* ATmega2561
* ATmega640
13075 - avrdragon.exe not able generate .cac file in Windows 7 64
13735 - AVRISPmkII: STK500 command line utility doesn't correctly
verify fuses for ELF files
12257 - Only SP1 includes QT600Upgrade, SP2 and SP3 does not include
11109 - ATtiny261/461/861 PINA register does not work correctly
13434 - External interrupt rising flank on tiny2313 triggers on both
13959 - External interrupt rising flank on xmega128a1 triggers on
both flanks
12515 - Xmega16D4 is not setting ADC MUX registers
14565 - Wrong PC mask in ATmega32 model
14622 - Timer 0 output compare & overflow interrupts don't work on
- ATmega8: Problem with Waveform Generation Mode bits -> AVR
Tools-Simulator-Known Issues
- Autodetection of wrong device selected by user in a debug session
is not working for all variants (P, PA, A) of the following devices:
ATmega165, ATmega169, ATmega645, ATmega649, ATmega325, ATmega329
Workaround: Make sure the selected device matches the target device
Note: AVR Studio 4.19 is the last release for the mature AVR Studio
4 platform. The release combines AVR Studio 4.18, SP1, SP2, and SP3
into one package for a more convenient install on legacy systems.
WinAVR as an independent project does not exist, but was entirely
under the wing and called Atmel AVR Toolchain. Put it to separate from
the site of Atmel, first remove the old WinAVR, top AVR Studio 4.19.