AT32UC3 Series AVR RISC Microcontrollers

High-performance, 32-bit RISC microprocessor from Microchip

Image of Atmel's AT32UC3 Series AVR RISC MicrocontrollersThe Microchip 32-bit AVR UC3 takes efficiency to a new level, going beyond high performance and low power consumption. Native fixed point DSP support, dual port SRAM, multi-layer data bus, peripheral DMA controller, peripheral event system and intelligent peripherals move performance and power consumption to the next step.

The peripheral DMA controller and multi-layer high-speed bus architecture make the UC3 microcontrollers ideal for high throughput applications. Intelligent peripherals and dynamic power control make UC3 devices the obvious choice for portable and battery-powered applications. Selected UC3 devices include an integrated Floating Point Unit (FPU) which improves arithmetic performance on decimal numbers, with better precision and wider dynamic range.


  • Connectivity: USB device and host, Ethernet MAC, SDRAM, NAND flash, and fast serial interfaces are ideal for complex applications.
  • Arithmetic performance: Integrated FPU increases precision and dynamic range in digital signal processing.
  • High data throughput: Peripheral DMA, multi-layered databus and large on-chip SRAM remove bottlenecks in high-speed communication.
  • Low power consumption: picoPower® technology delivers the industry’s lowest power consumption in active and sleep modes.
  • Software Library: All UC3 devices are supported by AVR Software Framework, a complete library of device drivers and middleware.

View more AT32UC3 Series AVR RISC Microcontrontrollers


ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
AT32UC3B0256-A2UR datasheet linkIC MCU 32BIT 256KB FLASH 64TQFPAT32UC3B0256-A2URIC MCU 32BIT 256KB FLASH 64TQFP225 - Immediate
AT32UC3B0256-A2UR product page link
AT32UC3B0512-A2UR datasheet linkIC MCU 32BIT 512KB FLASH 64TQFPAT32UC3B0512-A2URIC MCU 32BIT 512KB FLASH 64TQFP1424 - Immediate
AT32UC3B0512-A2UR product page link
AT32UC3B064-A2UR datasheet linkIC MCU 32BIT 64KB FLASH 64TQFPAT32UC3B064-A2URIC MCU 32BIT 64KB FLASH 64TQFP0AT32UC3B064-A2UR product page link
AT32UC3B0128-A2UR datasheet linkIC MCU 32BIT 128KB FLASH 64TQFPAT32UC3B0128-A2URIC MCU 32BIT 128KB FLASH 64TQFP0AT32UC3B0128-A2UR product page link


ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
AT32UC3L064-AUR datasheet linkIC MCU 32BIT 64KB FLASH 48TQFPAT32UC3L064-AURIC MCU 32BIT 64KB FLASH 48TQFP225 - Immediate
AT32UC3L064-AUR product page link
AT32UC3L016-AUR datasheet linkIC MCU 32BIT 16KB FLASH 48TQFPAT32UC3L016-AURIC MCU 32BIT 16KB FLASH 48TQFP0AT32UC3L016-AUR product page link
AT32UC3L032-AUR datasheet linkIC MCU 32BIT 32KB FLASH 48TQFPAT32UC3L032-AURIC MCU 32BIT 32KB FLASH 48TQFP0AT32UC3L032-AUR product page link
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Published: 2012-06-29