32-bit Microcontrollers - MCU

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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 (PEN) 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 256K FLASH 64K SRAM AT32UC3C0256C-ALUT Microchip Technology 1: S/ 54.96 6In Stock	Mfr. Part # AT32UC3C0256C-ALUT Mouser Part # 556-AT32UC3C0256CALT	Microchip Technology	32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	6In Stock	S/ 54.96 S/ 49.98 S/ 45.31	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
32-bit Microcontrollers - MCU UC3C 128K FLASH 32K SRAM AT32UC3C1128C-AUR Microchip Technology 1: S/ 42.55 306In Stock	Mfr. Part # AT32UC3C1128C-AUR Mouser Part # 556-AT32UC3C1128CAUR	Microchip Technology	32-bit Microcontrollers - MCU UC3C 128K FLASH 32K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	306In Stock	Cut Tape S/ 42.55 S/ 41.10 Reel S/ 35.07 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
32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM AT32UC3C1256C-AUR Microchip Technology 1: S/ 52.08 12In Stock 1,000Expected 1/4/2027	Mfr. Part # AT32UC3C1256C-AUR Mouser Part # 556-AT32UC3C1256CAUR	Microchip Technology	32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	12In Stock 1,000Expected 1/4/2027	Cut Tape S/ 52.08 S/ 50.29 Reel S/ 42.86 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	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	Reel, Cut Tape, MouseReel
32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM AT32UC3C1256C-AUT Microchip Technology 1: S/ 51.34 10In Stock	Mfr. Part # AT32UC3C1256C-AUT Mouser Part # 556-AT32UC3C1256CAUT	Microchip Technology	32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	10In Stock	S/ 51.34 S/ 46.67 S/ 42.31	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
32-bit Microcontrollers - MCU UC3C 64K FLASH 16K SRAM AT32UC3C164C-AUT Microchip Technology 1: S/ 38.34 21In Stock	Mfr. Part # AT32UC3C164C-AUT Mouser Part # 556-AT32UC3C164C-AUT	Microchip Technology	32-bit Microcontrollers - MCU UC3C 64K FLASH 16K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	21In Stock	S/ 38.34 S/ 34.92 S/ 31.61	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
32-bit Microcontrollers - MCU UC3C 64K FLASH 16K SRAM AT32UC3C264C-A2UT Microchip Technology 1: S/ 35.07 142In Stock	Mfr. Part # AT32UC3C264C-A2UT Mouser Part # 556-AT32UC3C264CA2UT	Microchip Technology	32-bit Microcontrollers - MCU UC3C 64K FLASH 16K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	142In Stock	S/ 35.07 S/ 31.84 S/ 28.84	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 Flash 64QFP 85C green TRAY ATUC256L3U-AUT Microchip Technology 1: S/ 40.75 33In Stock	Mfr. Part # ATUC256L3U-AUT Mouser Part # 556-ATUC256L3U-AUT	Microchip Technology	32-bit Microcontrollers - MCU UC3L-256KB Flash 64QFP 85C green TRAY Learn More about Microchip Technology microchip l series mcus	Datasheet	33In Stock	S/ 40.75 S/ 36.98 S/ 33.55	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
32-bit Microcontrollers - MCU UC3L-256KB Flash 64QFN 85C green T&R ATUC256L3U-Z3UR Microchip Technology 1: S/ 41.46 10In Stock	Mfr. Part # ATUC256L3U-Z3UR Mouser Part # 556-ATUC256L3U-Z3UR	Microchip Technology	32-bit Microcontrollers - MCU UC3L-256KB Flash 64QFN 85C green T&R Learn More about Microchip Technology microchip l series mcus	Datasheet	10In Stock	Cut Tape S/ 41.46 S/ 40.05 Reel S/ 34.14 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
32-bit Microcontrollers - MCU UC3C 128K FLASH 32K SRAM AT32UC3C2128C-A2UT Microchip Technology 1: S/ 38.85 2In Stock	Mfr. Part # AT32UC3C2128C-A2UT Mouser Part # 556-AT32UC3C2128CA2T	Microchip Technology	32-bit Microcontrollers - MCU UC3C 128K FLASH 32K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	2In Stock	S/ 38.85 S/ 35.23 S/ 31.92	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
32-bit Microcontrollers - MCU UC3L-256KB FL 85C AT32UC3L0256-D3HT Microchip Technology 1: S/ 38.50 39In Stock	Mfr. Part # AT32UC3L0256-D3HT Mouser Part # 556-AT32UC3L0256D3HT	Microchip Technology	32-bit Microcontrollers - MCU UC3L-256KB FL 85C Learn More about Microchip Technology microchip l series mcus	Datasheet	39In Stock	S/ 38.50 S/ 34.99 S/ 31.76	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
32-bit Microcontrollers - MCU 32-bit 512KB Flash AT32UC3A1512-AUT Microchip Technology 1: S/ 56.25 179Expected 12/31/2026	Mfr. Part # AT32UC3A1512-AUT Mouser Part # 556-AT32UC3A1512-AUT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 512KB Flash Learn More about Microchip Technology microchip a0 a1 series mcus	Datasheet	179Expected 12/31/2026	S/ 56.25 S/ 51.19 S/ 46.32	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
32-bit Microcontrollers - MCU 32-bit 256KB Flash AT32UC3B0256-Z2UT Microchip Technology 1: S/ 35.42 384On Order	Mfr. Part # AT32UC3B0256-Z2UT Mouser Part # 556-AT32UC3B0256Z2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 256KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	384On Order On Order Ship Dates Mfr. #: AT32UC3B0256-Z2UT Stock: 0 On Order: 124 Pending 260 Expected 3/8/2027 Factory Lead-Time: 25 Weeks	S/ 35.42 S/ 32.19 S/ 29.23	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
32-bit Microcontrollers - MCU 128KB, 100LQFP 85deg. Green AT32UC3A1128-AUR Microchip Technology 1,000: S/ 32.62 Non-Stocked Lead-Time 11 Weeks	Mfr. Part # AT32UC3A1128-AUR Mouser Part # 556-AT32UC3A1128-AUR	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 100LQFP 85deg. Green Learn More about Microchip Technology microchip a0 a1 series mcus	Datasheet	Non-Stocked Lead-Time 11 Weeks	Reel S/ 32.62	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
32-bit Microcontrollers - MCU 256KB, 100LQFP 85deg. Green AT32UC3A1256-AUR Microchip Technology 1: S/ 48.42 Non-Stocked Lead-Time 11 Weeks	Mfr. Part # AT32UC3A1256-AUR Mouser Part # 556-AT32UC3A1256-AUR	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 100LQFP 85deg. Green Learn More about Microchip Technology microchip a0 a1 series mcus	Datasheet	Non-Stocked Lead-Time 11 Weeks	Cut Tape S/ 48.42 S/ 46.79 Reel S/ 39.90 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
32-bit Microcontrollers - MCU 128KB, 144LQFP Ind AT32UC3A3128-ALUR Microchip Technology 800: S/ 44.65 Non-Stocked Lead-Time 11 Weeks	Mfr. Part # AT32UC3A3128-ALUR Mouser Part # 556-AT32UC3A3128ALUR	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 144LQFP Ind	Datasheet	Non-Stocked Lead-Time 11 Weeks	Reel S/ 44.65	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
32-bit Microcontrollers - MCU 128KB, 144LQFP Ind AT32UC3A3128-ALUT Microchip Technology 60: S/ 49.28 Non-Stocked Lead-Time 11 Weeks	Mfr. Part # AT32UC3A3128-ALUT Mouser Part # 556-AT32UC3A3128ALUT	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 144LQFP Ind Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	Non-Stocked Lead-Time 11 Weeks	S/ 49.28 S/ 44.65	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
32-bit Microcontrollers - MCU 128KB, 144FBGA Ind, w/AES Mod. AT32UC3A3128-CTUR Microchip Technology 2,000: S/ 42.39 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # AT32UC3A3128-CTUR Mouser Part # 556-AT32UC3A3128CTUR	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 144FBGA Ind, w/AES Mod. Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel S/ 42.39	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
32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod. AT32UC3A3256S-ALUR Microchip Technology 800: S/ 54.96 Non-Stocked Lead-Time 11 Weeks	Mfr. Part # AT32UC3A3256S-ALUR Mouser Part # 556-AT32UC3A3256SALR	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod. Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	Non-Stocked Lead-Time 11 Weeks	Reel S/ 54.96	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
32-bit Microcontrollers - MCU 64KB, 144LQFP Ind AT32UC3A364-ALUR Microchip Technology 800: S/ 37.25 Non-Stocked Lead-Time 11 Weeks	Mfr. Part # AT32UC3A364-ALUR Mouser Part # 556-AT32UC3A364-ALUR	Microchip Technology	32-bit Microcontrollers - MCU 64KB, 144LQFP Ind Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	Non-Stocked Lead-Time 11 Weeks	Reel S/ 37.25	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
32-bit Microcontrollers - MCU 128k flash Ind AT32UC3A4128S-C1UT Microchip Technology 260: S/ 33.20 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # AT32UC3A4128S-C1UT Mouser Part # 556-AT32UC3A4128SC1T	Microchip Technology	32-bit Microcontrollers - MCU 128k flash Ind Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	S/ 33.20	Min.: 260 Mult.: 260	AT32UC3A4		VFBGA-100	AVR			32 bit	10 bit		70 I/O	1.8 V	1.8 V			Tray
32-bit Microcontrollers - MCU 64k flash Ind AT32UC3A464-C1UT Microchip Technology 260: S/ 36.08 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # AT32UC3A464-C1UT Mouser Part # 556-AT32UC3A464C1UT	Microchip Technology	32-bit Microcontrollers - MCU 64k flash Ind Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	S/ 36.08	Min.: 260 Mult.: 260	AT32UC3A4		VFBGA-100	AVR			32 bit	10 bit		70 I/O	1.8 V	1.8 V			Tray
32-bit Microcontrollers - MCU 128KB Flash 64QFN AT32UC3C2128C-Z2UR Microchip Technology 4,000: S/ 32.62 Non-Stocked Lead-Time 33 Weeks	Mfr. Part # AT32UC3C2128C-Z2UR Mouser Part # 556-A32UC3C2128CZ2UR	Microchip Technology	32-bit Microcontrollers - MCU 128KB Flash 64QFN Learn More about Microchip Technology microchip c series mcus	Datasheet	Non-Stocked Lead-Time 33 Weeks	Reel S/ 32.62	Min.: 4,000 Mult.: 4,000 : 4,000	AT32UC3C2			AVR			32 bit								Reel
32-bit Microcontrollers - MCU 128KB Flash 64QFN AT32UC3C2128C-Z2UT Microchip Technology 1: S/ 38.85 Non-Stocked Lead-Time 34 Weeks	Mfr. Part # AT32UC3C2128C-Z2UT Mouser Part # 556-A32UC3C2128CZ2UT	Microchip Technology	32-bit Microcontrollers - MCU 128KB Flash 64QFN Learn More about Microchip Technology microchip c series mcus	Datasheet	Non-Stocked Lead-Time 34 Weeks	S/ 38.85 S/ 35.30 S/ 31.96	Min.: 1 Mult.: 1	AT32UC3C2			AVR			32 bit								Tray
32-bit Microcontrollers - MCU 256KB Flash 64QFN (-40oC to 85oC) T&R AT32UC3C2256C-Z2UR Microchip Technology 4,000: S/ 39.90 Non-Stocked Lead-Time 33 Weeks	Mfr. Part # AT32UC3C2256C-Z2UR Mouser Part # 556-A32UC3C2256CZ2UR	Microchip Technology	32-bit Microcontrollers - MCU 256KB Flash 64QFN (-40oC to 85oC) T&R Learn More about Microchip Technology microchip c series mcus	Datasheet	Non-Stocked Lead-Time 33 Weeks	Reel S/ 39.90	Min.: 4,000 Mult.: 4,000 : 4,000	AT32UC3C2			AVR			32 bit								Reel
32-bit Microcontrollers - MCU 256KB Flash 64QFN (-40oC to 85oC) TRAY AT32UC3C2256C-Z2UT Microchip Technology 260: S/ 39.20 Non-Stocked Lead-Time 28 Weeks	Mfr. Part # AT32UC3C2256C-Z2UT Mouser Part # 556-A32UC3C2256CZ2UT	Microchip Technology	32-bit Microcontrollers - MCU 256KB Flash 64QFN (-40oC to 85oC) TRAY Learn More about Microchip Technology microchip c series mcus	Datasheet	Non-Stocked Lead-Time 28 Weeks	S/ 39.20	Min.: 260 Mult.: 260	AT32UC3C2			AVR			32 bit								Tray

AVR® 32-Bit UC3 Microcontrollers

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AVR® 32-Bit UC3 Microcontrollers

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