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 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 64KB, 144LQFP Ind
Datasheet
97In 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 32-bit 512KB Flash
Datasheet
2,866In Stock
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 256k flash Ind
Datasheet
2,016In Stock
Min.: 1
Mult.: 1
Reel: 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
1,968In 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 512KB Flash
Datasheet
1,552In 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 32-bit 256KB Flash
Datasheet
383In 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
1,027In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 256KB, 144LQFP Ind
Datasheet
346In 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
549In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
312In Stock
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 512KB Flash
Datasheet
424In 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 512K FLASH 64K SRAM
Datasheet
229In 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 512K FLASH 64K SRAM
Datasheet
118In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 UC3L-128KB FL 85C
Datasheet
303In 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
798In 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 32-bit 64KB Flash
Datasheet
260In Stock
520Expected 2026/04/13
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 32-bit 128KB Flash
Datasheet
79In 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 512KB, 144FFBGA Ind
Datasheet
38In Stock
336Expected 2026/04/10
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
65In Stock
240Expected 2026/02/23
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 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 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 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
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 128KB Flash
Datasheet
65In Stock
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