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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Description Datasheet Availability Pricing (TWD) Filter the results in the table by unit price based on your quantity.
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 256KB, 144FFBGA w/ AES Mod.
Datasheet
183In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

AT32UC3A3 SMD/SMT TBGA-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 Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 128KB Flash
Datasheet
15In Stock
160Expected 11/23/2026
Min.: 1
Mult.: 1

AT32UC3B0 SMD/SMT TQFP-64 AVR 128 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
38In Stock
520Expected 10/8/2026
Min.: 1
Mult.: 1

AT32UC3B0 SMD/SMT QFN-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 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 256K FLASH 64K SRAM
Datasheet
6In Stock
Min.: 1
Mult.: 1

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 Tray
Microchip Technology 32-bit Microcontrollers - MCU UC3C 64K FLASH 16K SRAM
Datasheet
35In Stock
Min.: 1
Mult.: 1

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 Tray
Microchip Technology 32-bit Microcontrollers - MCU UC3C 128K FLASH 32K SRAM
Datasheet
2In Stock
Min.: 1
Mult.: 1

AT32UC3C2 SMD/SMT TQFP-64 AVR 128 kB 32 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-256KB Flash 64QFP 85C green TRAY
Datasheet
33In Stock
Min.: 1
Mult.: 1

UC3 L SMD/SMT TQFP-64 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 UC3L-256KB Flash 64QFN 85C green T&R
Datasheet
10In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

UC3 L SMD/SMT QFN-64 AVR 256 kB 32 kB 32 bit 12 bit 50 MHz 51 I/O 1.8 V 1.8 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM
Datasheet
1,993Expected 10/15/2026
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 512K FLASH 64K SRAM
Datasheet
4,770Expected 12/1/2026
Min.: 1
Mult.: 1

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 Tray

Microchip Technology 32-bit Microcontrollers - MCU 32-bit 64KB Flash
Datasheet
1,820Expected 10/5/2026
Min.: 1
Mult.: 1

AT32UC3B0 SMD/SMT QFN-64 AVR 64 kB 16 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 128KB, 100LQFP 85deg. Green
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000
: 1,000

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 Reel
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 100LQFP 85deg. Green
Datasheet
Non-Stocked Lead-Time 11 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP Ind
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 800
Mult.: 800
: 800

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 Reel
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP Ind
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 60
Mult.: 60

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 128KB, 144FBGA Ind, w/AES Mod.
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
: 2,000

AT32UC3A3 SMD/SMT TBGA-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 Reel
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod.
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 800
Mult.: 800
: 800

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 Reel
Microchip Technology 32-bit Microcontrollers - MCU 64KB, 144LQFP Ind
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 800
Mult.: 800
: 800

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 Reel
Microchip Technology 32-bit Microcontrollers - MCU 128k flash Ind
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 260
Mult.: 260

AT32UC3A4 VFBGA-100 AVR 32 bit 10 bit 70 I/O 1.8 V 1.8 V Tray
Microchip Technology 32-bit Microcontrollers - MCU 64k flash Ind
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 260
Mult.: 260

AT32UC3A4 VFBGA-100 AVR 32 bit 10 bit 70 I/O 1.8 V 1.8 V Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB Flash 64QFN
Datasheet
Non-Stocked Lead-Time 33 Weeks
Min.: 4,000
Mult.: 4,000
: 4,000

AT32UC3C2 AVR 32 bit Reel
Microchip Technology 32-bit Microcontrollers - MCU 128KB Flash 64QFN
Datasheet
Non-Stocked Lead-Time 34 Weeks
Min.: 260
Mult.: 260

AT32UC3C2 AVR 32 bit Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB Flash 64QFN (-40oC to 85oC) T&R
Datasheet
Non-Stocked Lead-Time 33 Weeks
Min.: 4,000
Mult.: 4,000
: 4,000

AT32UC3C2 AVR 32 bit Reel
Microchip Technology 32-bit Microcontrollers - MCU 256KB Flash 64QFN (-40oC to 85oC) TRAY
Datasheet
Non-Stocked Lead-Time 28 Weeks
Min.: 260
Mult.: 260

AT32UC3C2 AVR 32 bit Tray