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

ATMEGA644PA-AU IC MCU 8BIT 64KB FLASH 44TQFP Microchip Technology	2,717 In Stock	1 : $6.44000 Tray	AVR® ATmega	Tray	Active	Verified	AVR	8-Bit	20MHz	I2C, SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, WDT	32	64KB (32K x 16)	FLASH	2K x 8	4K x 8	1.8V ~ 5.5V	A/D 8x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
ATMEGA1284P-AU IC MCU 8BIT 128KB FLASH 44TQFP Microchip Technology	8,093 In Stock	1 : $6.99000 Tray	AVR® ATmega	Tray	Active	Verified	AVR	8-Bit	20MHz	I2C, SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, WDT	32	128KB (64K x 16)	FLASH	4K x 8	16K x 8	1.8V ~ 5.5V	A/D 8x10b	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP

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Microcontrollers

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.