Microcontrollers

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	DigiKey Programmable	Core Processor	Core Size	Speed	Connectivity	Peripherals	Number of I/O	Program Memory Size	Program Memory Type	EEPROM Size	RAM Size	Voltage - Supply (Vcc/Vdd)	Data Converters	Oscillator Type	Operating Temperature	Mounting Type	Supplier Device Package	Package / Case
ATMEGA32U4RC-MU IC MCU 8BIT 32KB FLASH 44VQFN Microchip Technology	7,086 In Stock	1 : £3.89000 Tray	AVR® ATmega	Tray	Active	Not Verified	AVR	8-Bit	16MHz	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	26	32KB (16K x 16)	FLASH	1K x 8	2.5K x 8	2.7V ~ 5.5V	A/D 12x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-VQFN (7x7)	44-VFQFN Exposed Pad
ATMEGA32U4-MU IC MCU 8BIT 32KB FLASH 44VQFN Microchip Technology	5,678 In Stock	1 : £3.89000 Tray	AVR® ATmega	Tray	Active	Not Verified	AVR	8-Bit	16MHz	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	26	32KB (16K x 16)	FLASH	1K x 8	2.5K x 8	2.7V ~ 5.5V	A/D 12x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-VQFN (7x7)	44-VFQFN Exposed Pad
ATMEGA32U4-AU IC MCU 8BIT 32KB FLASH 44TQFP Microchip Technology	10,939 In Stock	1 : £3.91000 Tray	AVR® ATmega	Tray	Active	Not Verified	AVR	8-Bit	16MHz	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	26	32KB (16K x 16)	FLASH	1K x 8	2.5K x 8	2.7V ~ 5.5V	A/D 12x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
ATMEGA32U4-AUR IC MCU 8BIT 32KB FLASH 44TQFP Microchip Technology	37,830 In Stock	1 : £3.98000 Cut Tape (CT) 1,500 : £3.30939 Tape & Reel (TR)	AVR® ATmega	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	AVR	8-Bit	16MHz	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	26	32KB (16K x 16)	FLASH	1K x 8	2.5K x 8	2.7V ~ 5.5V	A/D 12x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
ATMEGA32U4-MUR IC MCU 8BIT 32KB FLASH 44VQFN Microchip Technology	17,573 In Stock	1 : £3.99000 Cut Tape (CT) 4,000 : £3.31677 Tape & Reel (TR)	AVR® ATmega	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	AVR	8-Bit	16MHz	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	26	32KB (16K x 16)	FLASH	1K x 8	2.5K x 8	2.7V ~ 5.5V	A/D 12x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-VQFN (7x7)	44-VFQFN Exposed Pad
ATMEGA32U4RC-AU IC MCU 8BIT 32KB FLASH 44TQFP Microchip Technology	6,258 In Stock	1 : £3.89000 Tray	AVR® ATmega	Tray	Active	Not Verified	AVR	8-Bit	16MHz	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	26	32KB (16K x 16)	FLASH	1K x 8	2.5K x 8	2.7V ~ 5.5V	A/D 12x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
ATMEGA32U4RC-MUR IC MCU 8BIT 32KB FLASH 44VQFN Microchip Technology	77,576 In Stock	1 : £3.99000 Cut Tape (CT) 4,000 : £3.31677 Tape & Reel (TR)	AVR® ATmega	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	AVR	8-Bit	16MHz	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	26	32KB (16K x 16)	FLASH	1K x 8	2.5K x 8	2.7V ~ 5.5V	A/D 12x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-VQFN (7x7)	44-VFQFN Exposed Pad
ATMEGA32U4RC-AUR IC MCU 8BIT 32KB FLASH 44TQFP Microchip Technology	4,090 In Stock	1 : £3.99000 Cut Tape (CT) 1,500 : £3.31676 Tape & Reel (TR)	AVR® ATmega	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	AVR	8-Bit	16MHz	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	26	32KB (16K x 16)	FLASH	1K x 8	2.5K x 8	2.7V ~ 5.5V	A/D 12x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP

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Microcontroller products are relatively complex, user-programmable digital logic devices. Closely related to devices considered microprocessors, the distinction between the two reduces largely to the manufacturer's choice of noun, though by tradition microcontrollers integrate working memory, are more likely to incorporate mixed-signal peripherals and tend to be used with simpler software paradigms oriented toward repetitive execution of a predefined series of tasks.