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 (EUR) 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: €7.83 2,882In Stock	Mfr. Part No. AT32UC3B0256-A2UT Mouser Part No 556-AT32UC3B0256A2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 256KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	2,882In Stock	€7.83 €7.11 €6.46	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: €9.10 374In Stock	Mfr. Part No. AT32UC3B1512-Z1UT Mouser Part No 556-AT32UC3B1512Z1UT	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	374In Stock	€9.10 €8.26 €7.51	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: €7.42 343In Stock	Mfr. Part No. AT32UC3B1256-Z1UT Mouser Part No 556-AT32UC3B1256Z1UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 256KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	343In Stock	€7.42 €6.74 €6.11	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: €7.96 325In Stock	Mfr. Part No. AT32UC3B0256-A2UR Mouser Part No 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 €7.96 €7.71 Reel €6.55 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: €5.50 227In Stock	Mfr. Part No. AT32UC3B164-AUT Mouser Part No 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	€5.50 €5.00 €4.64 €4.58	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: €6.52 153In Stock	Mfr. Part No. AT32UC3B1128-Z1UT Mouser Part No 556-AT32UC3B1128Z1UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 128KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	153In Stock	€6.52 €5.93 €5.52 €5.51	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: €9.61 1,467In Stock	Mfr. Part No. AT32UC3B0512-A2UT Mouser Part No 556-AT32UC3B0512A2UT	Microchip Technology	32-bit Microcontrollers - MCU 512KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	1,467In Stock	€9.61 €8.72 €7.91	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: €6.52 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	€6.52 €5.93 €5.38	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: €9.74 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 €9.74 €9.41 Reel €8.02 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: €9.61 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	€9.61 €8.72 €7.91	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: €5.81 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	€5.81 €5.28 €4.77	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: €7.42 1,243In 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	1,243In Stock	€7.42 €6.74 €6.11	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: €6.87 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	€6.87 €6.25 €5.66	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: €7.83 33In Stock 520Expected 26/10/2026	Mfr. Part No. AT32UC3B0256-Z2UT Mouser Part No 556-AT32UC3B0256Z2UT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit 256KB Flash Learn More about Microchip Technology microchip b series mcus	Datasheet	33In Stock 520Expected 26/10/2026	€7.83 €7.11 €6.46	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: €5.79 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. AT32UC3B0128-A2UR Mouser Part No 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 €5.79	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: €5.79 Non-Stocked Lead-Time 25 Weeks	Mfr. Part No. AT32UC3B0128-Z2UR Mouser Part No 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 €5.79	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: €5.66 Non-Stocked Lead-Time 25 Weeks	Mfr. Part No. AT32UC3B0128-Z2UT Mouser Part No 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	€5.66	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: €6.55 Non-Stocked Lead-Time 25 Weeks	Mfr. Part No. AT32UC3B0256-Z2UR Mouser Part No 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 €6.55	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: €8.02 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. AT32UC3B0512-Z2UR Mouser Part No 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 €8.02	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: €4.90 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. AT32UC3B064-A2UR Mouser Part No 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 €4.90	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: €5.81 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. AT32UC3B064-A2UT Mouser Part No 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	€5.81 €5.28 €4.77	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: €4.90 Non-Stocked Lead-Time 25 Weeks	Mfr. Part No. AT32UC3B064-Z2UR Mouser Part No 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 €4.90	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: €5.46 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. AT32UC3B1128-AUR Mouser Part No 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 €5.46	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: €5.46 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. AT32UC3B1128-Z1UR Mouser Part No 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 €5.46	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: €6.21 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. AT32UC3B1256-AUR Mouser Part No 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 €6.21	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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