AVR® 32-Bit UC3 Microcontrollers

Microchip 32-bit AVR® UC3 RISC Microcontrollers (MCUs)are designed for cost-sensitive embedded applications that require low power consumption, high code density, and high performance. The AVR UC3 MCUs feature a memory protection unit (MPU) and fast, flexible interrupt controller, supporting the latest real-time operating systems. The secure access unit (SAU) with MPU provide enhanced security and integrity. A rich set of DSP instructions delivers higher computational capability.

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Qty. RoHS ECAD Model Series
Mounting Style
Package/Case
Core
Program Memory Size
Data RAM Size
Data Bus Width
ADC Resolution
Maximum Clock Frequency
Number of I/Os
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Microchip Technology 32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM
Datasheet
1 709In Stock
Min.: 1
Mult.: 1

AT32UC3C2 SMD/SMT TQFP-64 AVR 512 kB 64 kB 32 bit 12 bit 66 MHz 45 I/O 3 V 5.5 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 256KB Flash
Datasheet
1 071In Stock
Min.: 1
Mult.: 1

AT32UC3A1 SMD/SMT TQFP-100 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 69 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 128KB Flash
Datasheet
210In Stock
Min.: 1
Mult.: 1

AT32UC3B1 SMD/SMT TQFP-48 AVR 128 kB 32 kB 32 bit 10 bit 60 MHz 28 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP 85deg. Green
Datasheet
894In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

AT32UC3A0 SMD/SMT LQFP-144 AVR 128 kB 32 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 512KB, 144LQFP 85deg. Green
Datasheet
555In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

AT32UC3A0 SMD/SMT LQFP-144 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 512KB, 144FFBGA Ind
Datasheet
226In Stock
Min.: 1
Mult.: 1

AT32UC3A0 SMD/SMT FFBGA-144 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind
Datasheet
593In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT LQFP-144 AVR 256 kB 128 kB 32 bit 10 bit 84 MHz 110 I/O 3 V 3.6 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 64QFP 85deg. Green
Datasheet
325In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

AT32UC3B0 SMD/SMT TQFP-64 AVR 256 kB 32 kB 32 bit 10 bit 60 MHz 44 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 512KB Flash
Datasheet
685In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

AT32UC3B0 SMD/SMT TQFP-64 AVR 512 kB 96 kB 32 bit 10 bit 60 MHz 44 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 512KB Flash
Datasheet
1 041In Stock
Min.: 1
Mult.: 1

AT32UC3B0 SMD/SMT TQFP-64 AVR 512 kB 96 kB 32 bit 10 bit 60 MHz 44 I/O 1.65 V 1.95 V - 40 C + 85 C Tray

Microchip Technology 32-bit Microcontrollers - MCU 512KB Flash
Datasheet
814In Stock
Min.: 1
Mult.: 1

AT32UC3B0 SMD/SMT QFN-64 AVR 512 kB 96 kB 32 bit 10 bit 60 MHz 44 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 32-bit
Datasheet
743In Stock
1 500Expected 2026-09-11
Min.: 1
Mult.: 1

AT32UC3B1 SMD/SMT TQFP-48 AVR 256 kB 32 kB 32 bit 10 bit 60 MHz 28 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM
Datasheet
283In Stock
Min.: 1
Mult.: 1

AT32UC3C0 SMD/SMT LQFP-144 AVR 512 kB 64 kB 32 bit 12 bit 66 MHz 123 I/O 3 V 5.5 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU UC3C 128K FLASH 32K SRAM
Datasheet
356In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

AT32UC3C1 SMD/SMT TQFP-100 AVR 128 kB 32 kB 32 bit 12 bit 66 MHz 81 I/O 3 V 5.5 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM
Datasheet
609In Stock
Min.: 1
Mult.: 1
: 1 500

AT32UC3C2 AVR 256 kB 64 kB 32 bit 66 MHz 45 I/O 3 V 5.5 V - 40 C + 85 C Reel, Cut Tape
Microchip Technology 32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM
Datasheet
403In Stock
Min.: 1
Mult.: 1

AT32UC3C2 SMD/SMT TQFP-64 AVR 256 kB 64 kB 32 bit 12 bit 66 MHz 45 I/O 3 V 5.5 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM
Datasheet
354In Stock
Min.: 1
Mult.: 1
: 1 500

AT32UC3C2 AVR 512 kB 64 kB 32 bit 66 MHz 45 I/O 3 V 5.5 V - 40 C + 85 C Reel, Cut Tape
Microchip Technology 32-bit Microcontrollers - MCU UC3C 64K FLASH 16K SRAM
Datasheet
277In Stock
Min.: 1
Mult.: 1

AT32UC3C2 SMD/SMT AVR 64 kB 16 kB 32 bit 12 bit 66 MHz 45 I/O 3 V 5.5 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU UC3L-128KB FL 85C
Datasheet
422In Stock
Min.: 1
Mult.: 1

AT32UC3L0 SMD/SMT AVR 128 kB 32 kB 32 bit 12 bit 50 MHz 36 I/O 1.8 V 1.8 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU UC3L-256KB Fl 48QFP 85C Grn
Datasheet
247In Stock
Min.: 1
Mult.: 1

UC3 L SMD/SMT AVR 256 kB 32 kB 32 bit 12 bit 50 MHz 51 I/O 1.8 V 1.8 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP Ind, w/AES Mod.
Datasheet
120In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT LQFP-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU UC3L-256KB FL 85C
Datasheet
37In Stock
2 500Expected 2026-09-01
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

AT32UC3L0 SMD/SMT TQFP-48 AVR 256 kB 32 kB 32 bit 12 bit 50 MHz 36 I/O 1.8 V 1.8 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 512KB Flash
Datasheet
38In Stock
Min.: 1
Mult.: 1

AT32UC3A1 SMD/SMT TQFP-100 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 69 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144FFBGA Ind
Datasheet
6In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT FFBGA-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod.
Datasheet
10In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT LQFP-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray