32-bit Microcontrollers - MCU

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B-Series AT32UC3 AVR 32-Bit MCUs

Microchip Technology B-Series AT32UC3 AVR 32-Bit MCUs are designed for high data throughput and outstanding computing performance in space-constrained applications. It is especially well-suited for applications like USB Human Interface devices, USB stick gateway, biometrics, bridging, industrial control, and low-power portable applications. The series features high connectivity with a USB device and host. This feature, combined with a fast flash and large internal SRAM, makes it a perfect fit for data-intensive applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (ARS) 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 32-bit 256KB Flash AT32UC3B0256-A2UT Microchip Technology 1: $ 15.833,92 2.532In Stock	Mfr. Part # AT32UC3B0256-A2UT Mouser Part # 556-AT32UC3B0256A2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 256KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	2.532In Stock	$ 15.833,92 $ 14.389,73 $ 13.067,34	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
32-bit Microcontrollers - MCU 512KB Flash AT32UC3B1512-Z1UT Microchip Technology 1: $ 18.409,11 374In Stock	Mfr. Part # AT32UC3B1512-Z1UT Mouser Part # 556-AT32UC3B1512Z1UT	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	374In Stock	$ 18.409,11 $ 16.721,32 $ 15.190,12	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
32-bit Microcontrollers - MCU 32-bit 256KB Flash AT32UC3B1256-Z1UT Microchip Technology 1: $ 15.016,13 343In Stock	Mfr. Part # AT32UC3B1256-Z1UT Mouser Part # 556-AT32UC3B1256Z1UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 256KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	343In Stock	$ 15.016,13 $ 13.641,53 $ 12.371,34	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
32-bit Microcontrollers - MCU 256KB, 64QFP 85deg. Green AT32UC3B0256-A2UR Microchip Technology 1: $ 16.094,92 325In Stock	Mfr. Part # AT32UC3B0256-A2UR Mouser Part # 556-AT32UC3B0256A2UR	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 64QFP 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	325In Stock	Cut Tape $ 16.094,92 $ 15.590,32 Reel $ 13.258,73 MouseReel Available	Min.: 1 Mult.: 1 : 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
32-bit Microcontrollers - MCU 32-bit 64KB Flash AT32UC3B164-AUT Microchip Technology 1: $ 11.118,55 227In Stock	Mfr. Part # AT32UC3B164-AUT Mouser Part # 556-AT32UC3B164-AUT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 64KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	227In Stock	$ 11.118,55 $ 10.109,35 $ 9.448,15 $ 9.430,75	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
32-bit Microcontrollers - MCU 32-bit 128KB Flash AT32UC3B1128-Z1UT Microchip Technology 1: $ 13.189,13 153In Stock	Mfr. Part # AT32UC3B1128-Z1UT Mouser Part # 556-AT32UC3B1128Z1UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 128KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	153In Stock	$ 13.189,13 $ 12.005,94 $ 11.205,54 $ 11.188,14	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
32-bit Microcontrollers - MCU 512KB Flash AT32UC3B0512-A2UT Microchip Technology 1: $ 19.435,70 1.466In Stock	Mfr. Part # AT32UC3B0512-A2UT Mouser Part # 556-AT32UC3B0512A2UT	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	1.466In Stock	$ 19.435,70 $ 17.643,51 $ 16.007,92	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
32-bit Microcontrollers - MCU 32-bit 128KB Flash AT32UC3B1128-AUT Microchip Technology 1: $ 13.189,13 210In Stock	Mfr. Part # AT32UC3B1128-AUT Mouser Part # 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	$ 13.189,13 $ 12.005,94 $ 10.874,95	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 512KB Flash AT32UC3B0512-A2UR Microchip Technology 1: $ 19.714,10 685In Stock	Mfr. Part # AT32UC3B0512-A2UR Mouser Part # 556-AT32UC3B0512A2UR	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	685In Stock	Cut Tape $ 19.714,10 $ 19.035,51 Reel $ 16.234,12 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: $ 19.435,70 579In Stock	Mfr. Part # AT32UC3B0512-Z2UT Mouser Part # 556-AT32UC3B0512Z2UT	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	579In Stock	$ 19.435,70 $ 17.643,51 $ 16.007,92	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: $ 11.762,34 820In Stock	Mfr. Part # AT32UC3B064-Z2UT Mouser Part # 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	$ 11.762,34 $ 10.683,55 $ 9.639,55	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: $ 15.016,13 1.112In Stock 1.000Expected 2/8/2027	Mfr. Part # AT32UC3B1256-AUT Mouser Part # 556-AT32UC3B1256-AUT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit Learn More about Microchip Technology microchip b series mcus	Datasheet	1.112In Stock 1.000Expected 2/8/2027	$ 15.016,13 $ 13.641,53 $ 12.371,34	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 32-bit 128KB Flash AT32UC3B0128-A2UT Microchip Technology 1: $ 13.902,53 175In Stock	Mfr. Part # AT32UC3B0128-A2UT Mouser Part # 556-AT32UC3B0128A2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 128KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	175In Stock	$ 13.902,53 $ 12.649,74 $ 11.449,14	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
32-bit Microcontrollers - MCU 32-bit 256KB Flash AT32UC3B0256-Z2UT Microchip Technology 1: $ 15.833,92 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 Expected 10/26/2026 260 Expected 4/22/2027 Factory Lead-Time: 25 Weeks	$ 15.833,92 $ 14.389,73 $ 13.067,34	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, 64QFN 85deg. Green AT32UC3B0128-A2UR Microchip Technology 1.500: $ 11.692,74 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # AT32UC3B0128-A2UR Mouser Part # 556-AT32UC3B0128A2UR	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 64QFN 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel $ 11.692,74	Min.: 1.500 Mult.: 1.500 : 1.500	AT32UC3B0	SMD/SMT	TQFP-64	AVR	128 kB	32 kB	32 bit		60 MHz	44 I/O	1.65 V	1.95 V	- 40 C	+ 85 C	Reel
32-bit Microcontrollers - MCU 128KB, 64QFN 85deg. Green AT32UC3B0128-Z2UR Microchip Technology 4.000: $ 11.692,74 Non-Stocked Lead-Time 25 Weeks	Mfr. Part # AT32UC3B0128-Z2UR Mouser Part # 556-AT32UC3B0128Z2UR	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 64QFN 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 25 Weeks	Reel $ 11.692,74	Min.: 4.000 Mult.: 4.000 : 4.000	AT32UC3B0	SMD/SMT	QFN-64	AVR	128 kB	32 kB	32 bit		60 MHz	44 I/O	1.65 V	1.95 V	- 40 C	+ 85 C	Reel
32-bit Microcontrollers - MCU 32-bit 128KB Flash AT32UC3B0128-Z2UT Microchip Technology 260: $ 11.449,14 Non-Stocked Lead-Time 25 Weeks	Mfr. Part # AT32UC3B0128-Z2UT Mouser Part # 556-AT32UC3B0128Z2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 128KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 25 Weeks	$ 11.449,14	Min.: 260 Mult.: 260	AT32UC3B0	SMD/SMT	QFN-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
32-bit Microcontrollers - MCU 256KB, 64QFN 85deg. Green AT32UC3B0256-Z2UR Microchip Technology 4.000: $ 13.258,73 Non-Stocked Lead-Time 25 Weeks	Mfr. Part # AT32UC3B0256-Z2UR Mouser Part # 556-AT32UC3B0256Z2UR	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 64QFN 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 25 Weeks	Reel $ 13.258,73	Min.: 4.000 Mult.: 4.000 : 4.000	AT32UC3B0	SMD/SMT	QFN-64	AVR	256 kB	32 kB	32 bit		60 MHz	44 I/O	1.65 V	1.95 V	- 40 C	+ 85 C	Reel
32-bit Microcontrollers - MCU 512KB Flash AT32UC3B0512-Z2UR Microchip Technology 4.000: $ 16.234,12 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # AT32UC3B0512-Z2UR Mouser Part # 556-AT32UC3B0512Z2UR	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel $ 16.234,12	Min.: 4.000 Mult.: 4.000 : 4.000	AT32UC3B0	SMD/SMT	QFN-64	AVR	512 kB	96 kB	32 bit		60 MHz	44 I/O	1.65 V	1.95 V	- 40 C	+ 85 C	Reel
32-bit Microcontrollers - MCU 64KB, 64QFP 85deg. Green AT32UC3B064-A2UR Microchip Technology 1.500: $ 9.917,95 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # AT32UC3B064-A2UR Mouser Part # 556-AT32UC3B064-A2UR	Microchip Technology	32-bit Microcontrollers - MCU 64KB, 64QFP 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel $ 9.917,95	Min.: 1.500 Mult.: 1.500 : 1.500	AT32UC3B0	SMD/SMT	TQFP-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	Reel
32-bit Microcontrollers - MCU 32-bit 64KB Flash AT32UC3B064-A2UT Microchip Technology 1: $ 11.762,34 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # AT32UC3B064-A2UT Mouser Part # 556-AT32UC3B064-A2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 64KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 17 Weeks	$ 11.762,34 $ 10.683,55 $ 9.639,55	Min.: 1 Mult.: 1	AT32UC3B0	SMD/SMT	TQFP-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 64KB, 64QFN 85deg. Green AT32UC3B064-Z2UR Microchip Technology 4.000: $ 9.917,95 Non-Stocked Lead-Time 25 Weeks	Mfr. Part # AT32UC3B064-Z2UR Mouser Part # 556-AT32UC3B064-Z2UR	Microchip Technology	32-bit Microcontrollers - MCU 64KB, 64QFN 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 25 Weeks	Reel $ 9.917,95	Min.: 4.000 Mult.: 4.000 : 4.000	AT32UC3B0	SMD/SMT	QFN-64	AVR	64 kB	16 kB	32 bit		60 MHz	44 I/O	1.65 V	1.95 V	- 40 C	+ 85 C	Reel
32-bit Microcontrollers - MCU 128KB, 48QFN 85deg. Green AT32UC3B1128-AUR Microchip Technology 2.500: $ 11.048,95 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # AT32UC3B1128-AUR Mouser Part # 556-AT32UC3B1128-AUR	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 48QFN 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel $ 11.048,95	Min.: 2.500 Mult.: 2.500 : 2.500	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	Reel
32-bit Microcontrollers - MCU 128KB, 48QFN 85deg. Green AT32UC3B1128-Z1UR Microchip Technology 4.000: $ 11.048,95 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # AT32UC3B1128-Z1UR Mouser Part # 556-AT32UC3B1128Z1UR	Microchip Technology	32-bit Microcontrollers - MCU 128KB, 48QFN 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel $ 11.048,95	Min.: 4.000 Mult.: 4.000 : 4.000	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	Reel
32-bit Microcontrollers - MCU 256KB, 48TQFP 85deg. Green AT32UC3B1256-AUR Microchip Technology 2.500: $ 12.562,74 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # AT32UC3B1256-AUR Mouser Part # 556-AT32UC3B1256-AUR	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 48TQFP 85deg. Green Learn More about Microchip Technology microchip b series mcus	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel $ 12.562,74	Min.: 2.500 Mult.: 2.500 : 2.500	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	Reel

B-Series AT32UC3 AVR 32-Bit MCUs

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