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
AT89S51-24AU IC MCU 8BIT 4KB FLASH 44TQFP Microchip Technology	862 In Stock	1 : £1.68000 Tray	89S	Tray	Active	Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	4KB (4K x 8)	FLASH	-	128 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
AT89S52-24AU IC MCU 8BIT 8KB FLASH 44TQFP Microchip Technology	7,065 In Stock	1 : £1.81000 Tray	89S	Tray	Active	Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
AT89S8253-24AU IC MCU 8BIT 12KB FLASH 44TQFP Microchip Technology	5,724 In Stock	1 : £2.15000 Tray	89S	Tray	Active	Verified	8051	8-Bit	24MHz	SPI, UART/USART	POR, WDT	32	12KB (12K x 8)	FLASH	2K x 8	256 x 8	2.7V ~ 5.5V	-	External	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
AT89S51-24PU IC MCU 8BIT 4KB FLASH 40DIP Microchip Technology	678 In Stock	1 : £2.65000 Tube	89S	Tube	Active	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	4KB (4K x 8)	FLASH	-	128 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Through Hole	40-PDIP	40-DIP (0.600", 15.24mm)
AT89S52-24PU IC MCU 8BIT 8KB FLASH 40DIP Microchip Technology	1,532 In Stock	1 : £2.94000 Tube	89S	Tube	Active	Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Through Hole	40-PDIP	40-DIP (0.600", 15.24mm)
AT89S52-24JU IC MCU 8BIT 8KB FLASH 44PLCC Microchip Technology	4,078 In Stock	1 : £3.02000 Tube	89S	Tube	Active	Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-PLCC (16.6x16.6)	44-LCC (J-Lead)
AT89S8253-24PU IC MCU 8BIT 12KB FLASH 40DIP Microchip Technology	2,957 In Stock	1 : £3.55000 Tube	89S	Tube	Active	Verified	8051	8-Bit	24MHz	SPI, UART/USART	POR, WDT	32	12KB (12K x 8)	FLASH	2K x 8	256 x 8	2.7V ~ 5.5V	-	External	-40°C ~ 85°C (TA)	Through Hole	40-PDIP	40-DIP (0.600", 15.24mm)
AT89S8253-24JU IC MCU 8BIT 12KB FLASH 44PLCC Microchip Technology	1,289 In Stock	1 : £3.76000 Tube	89S	Tube	Active	Verified	8051	8-Bit	24MHz	SPI, UART/USART	POR, WDT	32	12KB (12K x 8)	FLASH	2K x 8	256 x 8	2.7V ~ 5.5V	-	External	-40°C ~ 85°C (TA)	Surface Mount	44-PLCC (16.6x16.6)	44-LCC (J-Lead)
AT89S51-24JU IC MCU 8BIT 4KB FLASH 44PLCC Microchip Technology	13,657 In Stock	1 : £3.81000 Tube	89S	Tube	Active	Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	4KB (4K x 8)	FLASH	-	128 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-PLCC (16.6x16.6)	44-LCC (J-Lead)
AT89S52-24AUR IC MCU 8BIT 8KB FLASH 44TQFP Microchip Technology	4,954 In Stock	1 : £1.93000 Cut Tape (CT) 2,000 : £1.59600 Tape & Reel (TR)	89S	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
AT89S2051-24SU IC MCU 8BIT 2KB FLASH 20SOIC Microchip Technology	201 In Stock	1 : £2.08000 Tube	89S	Tube	Active	Verified	8051	8-Bit	24MHz	UART/USART	Brown-out Detect/Reset, POR, PWM	15	2KB (2K x 8)	FLASH	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	20-SOIC	20-SOIC (0.295", 7.50mm Width)
AT89S52-24JUR 24MHZ, PLCC, IND TEMP, GREEN, 5V Microchip Technology	470 In Stock	1 : £4.15000 Cut Tape (CT) 500 : £3.44738 Tape & Reel (TR)	89S	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	-	80C52	8-Bit	24MHz	SPI, UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-PLCC (16.6x16.6)	44-LCC (J-Lead)
AT89S64-SLSUM MICROCONTROLLER, 8 BIT, FLASH, Atmel	371 Marketplace	125 : £1.91520 Bulk	89S	Bulk	Active	Not Verified	8051	8-Bit	-	SPI, UART/USART	-	-	-	FLASH	-	-	-	-	-	-	-	-	-
AT89S64-RLTUM MICROCONTROLLER, 8 BIT, FLASH, Atmel	297 Marketplace	125 : £1.91520 Bulk	89S	Bulk	Active	Not Verified	8051	8-Bit	-	SPI, UART/USART	-	-	-	FLASH	-	-	-	-	-	-	-	-	-
AT89SND1CDNC-ROTUL MICROCONTROLLER, 8 BIT, FLASH, 8 Atmel	1,350 Marketplace	25 : £9.59200 Bulk	89S	Bulk	Active	Not Verified	-	8-Bit	-	-	-	-	-	FLASH	-	-	-	-	-	-	-	-	-
AT89S51-24AC IC MCU 8BIT 4KB FLASH 44TQFP Microchip Technology	0 In Stock	1,120 : £1.02019 Tray	89S	Tray	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	4KB (4K x 8)	FLASH	-	128 x 8	4V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
AT89S51-24AI IC MCU 8BIT 4KB FLASH 44TQFP Microchip Technology	0 In Stock	1,120 : £1.02019 Tray	89S	Tray	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	4KB (4K x 8)	FLASH	-	128 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
AT89S51-24PC IC MCU 8BIT 4KB FLASH 40DIP Microchip Technology	0 In Stock	1,000 : £1.03236 Tube	89S	Tube	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	4KB (4K x 8)	FLASH	-	128 x 8	4V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	Through Hole	40-PDIP	40-DIP (0.600", 15.24mm)
AT89S51-24PI IC MCU 8BIT 4KB FLASH 40DIP Microchip Technology	0 In Stock	1,000 : £1.03236 Tube	89S	Tube	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	4KB (4K x 8)	FLASH	-	128 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Through Hole	40-PDIP	40-DIP (0.600", 15.24mm)
AT89S52-24PC IC MCU 8BIT 8KB FLASH 40DIP Microchip Technology	0 In Stock	540 : £1.04459 Tube	89S	Tube	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	Through Hole	40-PDIP	40-DIP (0.600", 15.24mm)
AT89S52-24PI IC MCU 8BIT 8KB FLASH 40DIP Microchip Technology	0 In Stock	540 : £1.04459 Tube	89S	Tube	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Through Hole	40-PDIP	40-DIP (0.600", 15.24mm)
AT89S52-24AC IC MCU 8BIT 8KB FLASH 44TQFP Microchip Technology	0 In Stock	960 : £1.12473 Tray	89S	Tray	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
AT89S52-24AI IC MCU 8BIT 8KB FLASH 44TQFP Microchip Technology	0 In Stock	960 : £1.12473 Tray	89S	Tray	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-TQFP (10x10)	44-TQFP
AT89S52-24JI IC MCU 8BIT 8KB FLASH 44PLCC Microchip Technology	0 In Stock	918 : £1.13001 Tube	89S	Tube	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	8KB (8K x 8)	FLASH	-	256 x 8	4V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	Surface Mount	44-PLCC (16.6x16.6)	44-LCC (J-Lead)
AT89S51-24JC IC MCU 8BIT 4KB FLASH 44PLCC Microchip Technology	0 In Stock	1,026 : £1.71570 Tube	89S	Tube	Obsolete	Not Verified	8051	8-Bit	24MHz	UART/USART	WDT	32	4KB (4K x 8)	FLASH	-	128 x 8	4V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	Surface Mount	44-PLCC (16.6x16.6)	44-LCC (J-Lead)

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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.

Microcontrollers

Microcontrollers

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