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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Program Memory Size
Data RAM Size
Data Bus Width
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Supply Voltage - Max
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Microchip Technology 32-bit Microcontrollers - MCU 32-bit 128KB Flash
Datasheet
261In Stock
Min.: 1
Mult.: 1

AT32UC3A1 SMD/SMT TQFP-100 AVR 128 kB 32 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, 144FBGA Ind, w/AES Mod.
Datasheet
118In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT FFBGA-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
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 256K FLASH 64K SRAM
Datasheet
132In Stock
Min.: 1
Mult.: 1

AT32UC3C1 SMD/SMT TQFP-100 AVR 256 kB 64 kB 32 bit 12 bit 66 MHz 81 I/O 3 V 5.5 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind
Datasheet
300In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

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 Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 256k flash Ind
Datasheet
3,985In Stock
Min.: 1
Mult.: 1
: 4,000

AT32UC3A4 SMD/SMT VFBGA-100 AVR 256 kB 64 kB 32 bit 10 bit 84 MHz 70 I/O 1.8 V 1.8 V - 40 C + 85 C Reel, Cut Tape
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 256KB Flash
Datasheet
343In Stock
Min.: 1
Mult.: 1

AT32UC3B1 SMD/SMT QFN-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 UC3L-256KB FL 85C
Datasheet
740In 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 UC3L-256KB FL 85C
Datasheet
39In Stock
Min.: 1
Mult.: 1

AT32UC3L0 SMD/SMT TLLGA-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 UC3C 64K FLASH 16K SRAM
Datasheet
2In 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 64KB, 144LQFP Ind
Datasheet
96In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT LQFP-144 AVR 64 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 128KB, 144FBGA Ind, w/AES Mod.
Datasheet
175In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT FFBGA-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 UC3C 256K FLASH 64K SRAM
Datasheet
135In Stock
Min.: 1
Mult.: 1
: 800

AT32UC3C0 SMD/SMT LQFP-144 AVR 256 kB 64 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 32-bit 128KB Flash
Datasheet
77In Stock
Min.: 1
Mult.: 1

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 Tray
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 64KB Flash
Datasheet
227In Stock
Min.: 1
Mult.: 1

AT32UC3B1 SMD/SMT TQFP-48 AVR 64 kB 16 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
919In 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 UC3D4 64KB FL 85C
Datasheet
195In Stock
Min.: 1
Mult.: 1

UC3 D SMD/SMT TQFP-48 AVR 64 kB 16 kB 32 bit 48 MHz 3.6 V 3.6 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144FFBGA w/ AES Mod.
Datasheet
88In 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 32-bit 128KB Flash
Datasheet
153In Stock
Min.: 1
Mult.: 1

AT32UC3B1 SMD/SMT QFN-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 UC3C 64K FLASH 16K SRAM
Datasheet
95In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

AT32UC3C1 SMD/SMT TQFP-100 AVR 64 kB 16 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 32-bit 256KB Flash
Datasheet
568In Stock
1,020Expected 7/30/2026
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 32-bit 512KB Flash
Datasheet
1,502In Stock
1,260Expected 7/29/2026
Min.: 1
Mult.: 1

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 Tray
Microchip Technology 32-bit Microcontrollers - MCU 512KB, 100LQFP 85deg. Green
Datasheet
1,515In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 256KB Flash
Datasheet
2,503In 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 UC3C 512K FLASH 64K SRAM
Datasheet
3,193In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

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 Reel, Cut Tape, MouseReel