32-bit Microcontrollers - MCU – Mouser United Kingdom

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	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
32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM AT32UC3C0512C-ALUR Microchip Technology 1: £12.66 2,755In Stock	Mfr. Part No. AT32UC3C0512C-ALUR Mouser Part No 556-AT32UC3C0512CALR	Microchip Technology	32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	2,755In Stock	Cut Tape £12.66 £12.24 Reel £10.43 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
32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM AT32UC3C1512C-AUR Microchip Technology 1: £11.83 1,891In Stock	Mfr. Part No. AT32UC3C1512C-AUR Mouser Part No 556-AT32UC3C1512CAUR	Microchip Technology	32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	1,891In Stock	Cut Tape £11.83 £11.44 Reel £9.74 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
32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM AT32UC3C1512C-AUT Microchip Technology 1: £11.68 4,680In Stock	Mfr. Part No. AT32UC3C1512C-AUT Mouser Part No 556-AT32UC3C1512CAUT	Microchip Technology	32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	4,680In Stock	£11.68 £10.62 £9.63	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
32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM AT32UC3C2512C-A2UT Microchip Technology 1: £10.85 1,689In Stock	Mfr. Part No. AT32UC3C2512C-A2UT Mouser Part No 556-AT32UC3C2512CA2T	Microchip Technology	32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	1,689In Stock	£10.85 £9.87 £8.93	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
32-bit Microcontrollers - MCU 32-bit 256KB Flash AT32UC3A1256-AUT Microchip Technology 1: £9.19 765In Stock	Mfr. Part No. AT32UC3A1256-AUT Mouser Part No 556-AT32UC3A1256-AUT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 256KB Flash Learn More about Microchip Technology microchip a0 a1 series mcus	Datasheet	765In Stock	£9.19 £8.35 £7.56	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
32-bit Microcontrollers - MCU 32-bit 128KB Flash AT32UC3B1128-AUT Microchip Technology 1: £5.69 210In Stock	Mfr. Part No. AT32UC3B1128-AUT Mouser Part No 556-AT32UC3B1128-AUT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 128KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	210In Stock	£5.69 £5.18 £4.70	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
32-bit Microcontrollers - MCU UC3L-256KB FL 85C AT32UC3L0256-AUR Microchip Technology 1: £7.39 1,537In Stock	Mfr. Part No. AT32UC3L0256-AUR Mouser Part No 556-AT32UC3L0256-AUR	Microchip Technology	32-bit Microcontrollers - MCU UC3L-256KB FL 85C Learn More about Microchip Technology microchip l series mcus	Datasheet	1,537In Stock	Cut Tape £7.39 £7.16 Reel £6.08 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
32-bit Microcontrollers - MCU 128KB, 144LQFP 85deg. Green AT32UC3A0128-ALUR Microchip Technology 1: £8.50 894In Stock	Mfr. Part No. AT32UC3A0128-ALUR Mouser Part No 556-AT32UC3A0128ALUR	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 144LQFP 85deg. Green Learn More about Microchip Technology microchip a0 a1 series mcus	Datasheet	894In Stock	Cut Tape £8.50 £8.21 Reel £6.99 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
32-bit Microcontrollers - MCU 512KB, 144LQFP 85deg. Green AT32UC3A0512-ALUR Microchip Technology 1: £11.16 105In Stock 800Expected 28/12/2026	Mfr. Part No. AT32UC3A0512-ALUR Mouser Part No 556-AT32UC3A0512ALUR	Microchip Technology	32-bit Microcontrollers - MCU 512KB, 144LQFP 85deg. Green Learn More about Microchip Technology microchip a0 a1 series mcus	Datasheet	105In Stock 800Expected 28/12/2026	Cut Tape £11.16 £10.78 Reel £9.18 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
32-bit Microcontrollers - MCU 256KB, 144LQFP Ind AT32UC3A3256-ALUT Microchip Technology 1: £12.03 348In Stock 480On Order	Mfr. Part No. AT32UC3A3256-ALUT Mouser Part No 556-AT32UC3A3256ALUT	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144LQFP Ind Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	348In Stock 480On Order	£12.03 £10.93 £9.90	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
32-bit Microcontrollers - MCU 512KB Flash AT32UC3B0512-A2UR Microchip Technology 1: £8.50 685In Stock	Mfr. Part No. AT32UC3B0512-A2UR Mouser Part No 556-AT32UC3B0512A2UR	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	685In Stock	Cut Tape £8.50 £8.21 Reel £7.00 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
32-bit Microcontrollers - MCU 512KB Flash AT32UC3B0512-Z2UT Microchip Technology 1: £8.39 579In Stock	Mfr. Part No. AT32UC3B0512-Z2UT Mouser Part No 556-AT32UC3B0512Z2UT	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	579In Stock	£8.39 £7.61 £6.91	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
32-bit Microcontrollers - MCU 32-bit 64KB Flash AT32UC3B064-Z2UT Microchip Technology 1: £5.07 820In Stock	Mfr. Part No. AT32UC3B064-Z2UT Mouser Part No 556-AT32UC3B064-Z2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 64KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	820In Stock	£5.07 £4.61 £4.16	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
32-bit Microcontrollers - MCU 32-bit AT32UC3B1256-AUT Microchip Technology 1: £6.48 1,112In Stock	Mfr. Part No. AT32UC3B1256-AUT Mouser Part No 556-AT32UC3B1256-AUT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit Learn More about Microchip Technology microchip b series mcus	Datasheet	1,112In Stock	£6.48 £5.88 £5.33	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
32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM AT32UC3C2256C-A2UR Microchip Technology 1: £9.34 609In Stock	Mfr. Part No. AT32UC3C2256C-A2UR Mouser Part No 556-AT32UC3C2256CA2R	Microchip Technology	32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	609In Stock	Cut Tape £9.34 £9.03 Reel £7.70	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
32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM AT32UC3C2256C-A2UT Microchip Technology 1: £9.19 522In Stock 800Expected 10/12/2026	Mfr. Part No. AT32UC3C2256C-A2UT Mouser Part No 556-AT32UC3C2256CA2T	Microchip Technology	32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	522In Stock 800Expected 10/12/2026	£9.19 £8.35 £7.56	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
32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM AT32UC3C2512C-A2UR Microchip Technology 1: £11.01 350In Stock	Mfr. Part No. AT32UC3C2512C-A2UR Mouser Part No 556-AT32UC3C2512CA2R	Microchip Technology	32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	350In Stock	Cut Tape £11.01 £10.63 Reel £9.04	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
32-bit Microcontrollers - MCU UC3C 64K FLASH 16K SRAM AT32UC3C264C-A2UT Microchip Technology 1: £6.77 202In Stock	Mfr. Part No. AT32UC3C264C-A2UT Mouser Part No 556-AT32UC3C264CA2UT	Microchip Technology	32-bit Microcontrollers - MCU UC3C 64K FLASH 16K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	202In Stock	£6.77 £6.14 £5.56	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
32-bit Microcontrollers - MCU UC3L-256KB Fl 48QFP 85C Grn ATUC256L4U-AUT Microchip Technology 1: £7.53 221In Stock	Mfr. Part No. ATUC256L4U-AUT Mouser Part No 556-ATUC256L4U-AUT	Microchip Technology	32-bit Microcontrollers - MCU UC3L-256KB Fl 48QFP 85C Grn Learn More about Microchip Technology microchip l series mcus	Datasheet	221In Stock	£7.53 £6.86 £6.21	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
32-bit Microcontrollers - MCU 128KB, 144LQFP Ind, w/AES Mod. AT32UC3A3128S-ALUT Microchip Technology 1: £10.37 120In Stock	Mfr. Part No. AT32UC3A3128S-ALUT Mouser Part No 556-AT32UC3A3128SALT	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 144LQFP Ind, w/AES Mod. Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	120In Stock	£10.37 £9.42 £8.53	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
32-bit Microcontrollers - MCU 512KB, 144FFBGA Ind AT32UC3A0512-CTUT Microchip Technology 1: £11.88 50In Stock	Mfr. Part No. AT32UC3A0512-CTUT Mouser Part No 556-AT32UC3A0512CTUT	Microchip Technology	32-bit Microcontrollers - MCU 512KB, 144FFBGA Ind Learn More about Microchip Technology microchip a0 a1 series mcus	Datasheet	50In Stock	£11.88 £10.81 £9.79	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
32-bit Microcontrollers - MCU 256KB, 144FFBGA Ind AT32UC3A3256-CTUT Microchip Technology 1: £12.16 6In Stock	Mfr. Part No. AT32UC3A3256-CTUT Mouser Part No 556-AT32UC3A3256CTUT	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144FFBGA Ind Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	6In Stock	£12.16 £11.07 £10.03	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
32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod. AT32UC3A3256S-ALUT Microchip Technology 1: £12.73 10In Stock	Mfr. Part No. AT32UC3A3256S-ALUT Mouser Part No 556-AT32UC3A3256SALT	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod. Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	10In Stock	£12.73 £11.58 £10.48	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
32-bit Microcontrollers - MCU 256KB, 144FFBGA w/ AES Mod. AT32UC3A3256S-CTUR Microchip Technology 1: £13.03 183In Stock	Mfr. Part No. AT32UC3A3256S-CTUR Mouser Part No 556-AT32UC3A3256SCTR	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144FFBGA w/ AES Mod. Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	183In Stock	Cut Tape £13.03 £12.58 Reel £10.72 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
32-bit Microcontrollers - MCU 32-bit 128KB Flash AT32UC3B0128-A2UT Microchip Technology 1: £6.00 175In Stock	Mfr. Part No. AT32UC3B0128-A2UT Mouser Part No 556-AT32UC3B0128A2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 128KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	175In Stock	£6.00 £5.46 £4.94	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

AVR® 32-Bit UC3 Microcontrollers

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