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ATmega32U4 8-bit MCU with USB Controller

Microchip Technology ATmega32U4 8-bit Microcontroller (MCU) with USB Controller is a low-power, AVR^® RISC-based device featuring 32KB self-programming flash program memory, 2.5KB SRAM, 1KB EEPROM, USB 2.0 full-speed/low-speed device module, 12-channel, 10-bit analog-to-digital converter, and JTAG interface for on-chip-debug. This Microchip device achieves up to 16 MIPS throughput at 16MHz and 2.7 to 5.5V operation. By executing powerful instructions in a single clock cycle, Microchip ATmega32U4 MCU achieves throughputs approaching 1MIPS per MHz, allowing you to optimize power consumption versus processing speed.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Core	Program Memory Size	Data RAM Size	Package / Case	Maximum Clock Frequency	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Data Bus Width	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
	8-bit Microcontrollers - MCU AVR USB 16K FL 16MHz Ind Temp Grn ATMEGA32U4RC-AUR Microchip Technology 1: S/ 21.02 3,881In Stock	Mfr. Part # ATMEGA32U4RC-AUR Mouser Part # 556-ATMEGA32U4RC-AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR USB 16K FL 16MHz Ind Temp Grn Learn More about Microchip Technology Atmel atmega32	Datasheet	3,881In Stock	Cut Tape S/ 21.02 S/ 20.55 S/ 20.32 S/ 20.16 View Reel S/ 17.48 S/ 20.01 S/ 19.70 S/ 19.42 S/ 17.48 MouseReel Available	Min.: 1 Mult.: 1 : 1,500			AVR	32 kB	2.5 kB	TQFP-44	16 MHz	10 bit	26 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega32U4	Reel, Cut Tape, MouseReel
	8-bit Microcontrollers - MCU AVR USB 32K FL 16MHz Ind Temp Grn ATMEGA32U4RC-MU Microchip Technology 1: S/ 20.47 408In Stock	Mfr. Part # ATMEGA32U4RC-MU Mouser Part # 556-ATMEGA32U4RC-MU	Microchip Technology	8-bit Microcontrollers - MCU AVR USB 32K FL 16MHz Ind Temp Grn Learn More about Microchip Technology Atmel atmega32	Datasheet	408In Stock	S/ 20.47 S/ 18.80 S/ 17.05 S/ 17.01 S/ 16.97	Min.: 1 Mult.: 1			AVR	32 kB	2.5 kB	QFN-44	16 MHz	10 bit	26 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega32U4	Tray
	8-bit Microcontrollers - MCU AVR USB 16K FL 16MHz Ind Temp Grn ATMEGA32U4RC-MUR Microchip Technology 1: S/ 17.91 794In Stock	Mfr. Part # ATMEGA32U4RC-MUR Mouser Part # 556-ATMEGA32U4RC-MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR USB 16K FL 16MHz Ind Temp Grn Learn More about Microchip Technology Atmel atmega32	Datasheet	794In Stock	Cut Tape S/ 17.91 S/ 17.59 Reel S/ 17.44 MouseReel Available	Min.: 1 Mult.: 1 : 4,000			AVR	32 kB	2.5 kB	QFN-44	16 MHz			2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega32U4	Reel, Cut Tape, MouseReel
	8-bit Microcontrollers - MCU AVR USB 32K FLASH INDUSTRIAL ATMEGA32U4-AU Microchip Technology 1: S/ 20.59 3,946In Stock	Mfr. Part # ATMEGA32U4-AU Mouser Part # 556-ATMEGA32U4-AU	Microchip Technology	8-bit Microcontrollers - MCU AVR USB 32K FLASH INDUSTRIAL Learn More about Microchip Technology Atmel atmega32	Datasheet	3,946In Stock	S/ 20.59 S/ 18.84 S/ 17.09	Min.: 1 Mult.: 1			AVR	32 kB	2.5 kB	TQFP-44	16 MHz	10 bit	26 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega32U4	Tray
	8-bit Microcontrollers - MCU AVR USB 32K FLASH INDUSTRIAL ATMEGA32U4-MU Microchip Technology 1: S/ 20.47 4,136In Stock	Mfr. Part # ATMEGA32U4-MU Mouser Part # 556-ATMEGA32U4-MU	Microchip Technology	8-bit Microcontrollers - MCU AVR USB 32K FLASH INDUSTRIAL Learn More about Microchip Technology Atmel atmega32	Datasheet	4,136In Stock	S/ 20.47 S/ 18.80 S/ 17.05	Min.: 1 Mult.: 1			AVR	32 kB	2.5 kB	QFN-44	16 MHz	10 bit	26 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega32U4	Tray
	8-bit Microcontrollers - MCU USB 32K Flash 16 MHz ATMEGA32U4-AUR Microchip Technology 1: S/ 20.98 2,401In Stock	Mfr. Part # ATMEGA32U4-AUR Mouser Part # 556-ATMEGA32U4-AUR	Microchip Technology	8-bit Microcontrollers - MCU USB 32K Flash 16 MHz Learn More about Microchip Technology Atmel atmega32	Datasheet	2,401In Stock	Cut Tape S/ 20.98 S/ 20.44 Reel S/ 17.44 MouseReel Available	Min.: 1 Mult.: 1 : 1,500			AVR	32 kB	2.5 kB	TQFP-44	16 MHz	10 bit	26 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega32U4	Reel, Cut Tape, MouseReel
	8-bit Microcontrollers - MCU USB 32K FLASH 16 MHz ATMEGA32U4-MUR Microchip Technology 1: S/ 21.02 822In Stock 4,000Expected 11/20/2026	Mfr. Part # ATMEGA32U4-MUR Mouser Part # 556-ATMEGA32U4-MUR	Microchip Technology	8-bit Microcontrollers - MCU USB 32K FLASH 16 MHz Learn More about Microchip Technology Atmel atmega32	Datasheet	822In Stock 4,000Expected 11/20/2026	Cut Tape S/ 21.02 S/ 20.55 Reel S/ 17.48 MouseReel Available	Min.: 1 Mult.: 1 : 4,000			AVR	32 kB	2.5 kB	QFN-44	16 MHz	10 bit	26 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega32U4	Reel, Cut Tape, MouseReel
	8-bit Microcontrollers - MCU AVR USB 32K FL 16MHz Ind Temp Grn ATMEGA32U4RC-AU Microchip Technology 1: S/ 20.47 1,047In Stock	Mfr. Part # ATMEGA32U4RC-AU Mouser Part # 556-ATMEGA32U4RC-AU	Microchip Technology	8-bit Microcontrollers - MCU AVR USB 32K FL 16MHz Ind Temp Grn Learn More about Microchip Technology Atmel atmega32	Datasheet	1,047In Stock	S/ 20.47 S/ 18.80 S/ 17.05	Min.: 1 Mult.: 1			AVR	32 kB	2.5 kB	TQFP-44	16 MHz	10 bit	26 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega32U4	Tray