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
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Core
Program Memory Size
Data RAM Size
Data Bus Width
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Supply Voltage - Max
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Packaging
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 256KB Flash
Datasheet
2.607In Stock
Min.: 1
Mult.: 1

AT32UC3B0 SMD/SMT TQFP-64 AVR 64 kB 32 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 256KB Flash
Datasheet
683In Stock
Min.: 1
Mult.: 1

AT32UC3A0 SMD/SMT LQFP-144 AVR 256 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 512KB, 144LQFP 85deg. Green
Datasheet
675In 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 32-bit 256KB Flash
Datasheet
664In 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 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 512KB Flash
Datasheet
695In 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
1.079In 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
294In 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 512KB Flash
Datasheet
374In Stock
Min.: 1
Mult.: 1

AT32UC3B1 SMD/SMT QFN-48 AVR 512 kB 96 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 128K FLASH 32K SRAM
Datasheet
386In 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 512K FLASH 64K SRAM
Datasheet
909In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

AT32UC3C1 SMD/SMT TQFP-100 AVR 512 kB 64 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
709In 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
91In 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 64K FLASH 16K SRAM
Datasheet
182In 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 85C
Datasheet
777In Stock
Min.: 1
Mult.: 1

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 Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind
Datasheet
675In 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
335In 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 32-bit
Datasheet
633In Stock
750Expected 7/17/2026
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 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 UC3C 128K FLASH 32K SRAM
Datasheet
106In Stock
Min.: 1
Mult.: 1

AT32UC3C0 SMD/SMT LQFP-144 AVR 128 kB 32 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 512K FLASH 64K SRAM
Datasheet
49In Stock
240Expected 6/4/2026
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 64K FLASH 16K SRAM
Datasheet
24In Stock
Min.: 1
Mult.: 1
: 800

AT32UC3C0 SMD/SMT LQFP-144 AVR 64 kB 16 kB 32 bit 12 bit 66 MHz 123 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
52In Stock
Min.: 1
Mult.: 1

AT32UC3C0 SMD/SMT LQFP-144 AVR 64 kB 16 kB 32 bit 12 bit 66 MHz 123 I/O 3 V 5.5 V - 40 C + 85 C Tray