Microcontrollers

Browse available Microcontrollers part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.

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Mfr. Part #	Availability	Price	Quantity	Datasheet	Package/Case	Series	Packaging	Product Status	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	Grade	Qualification	Mounting Type
AT80C32X2-SLSUL IC MCU 8BIT ROMLESS 44PLCC Microchip Technology	2,704	-	RFQ	Datasheet	44-LCC (J-Lead)	80C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR	32	-	ROMless	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT80C32X2-SLSUM IC MCU 8BIT ROMLESS 44PLCC Microchip Technology	4,207	-	RFQ	Datasheet	44-LCC (J-Lead)	80C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR	32	-	ROMless	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT80C51RA2-3CSUL IC MCU 8BIT ROMLESS 40PDIL Microchip Technology	3,924	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	80C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, PWM, WDT	32	-	ROMless	-	512 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT80C51RA2-3CSUM IC MCU 8BIT ROMLESS 40PDIL Microchip Technology	1,999	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	80C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	-	ROMless	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT80C51RA2-RLTUM IC MCU 8BIT ROMLESS 44VQFP Microchip Technology	1,224	-	RFQ	Datasheet	44-LQFP	80C	Tray	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	-	ROMless	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT80C51RA2-SLSUL IC MCU 8BIT ROMLESS 44PLCC Microchip Technology	3,122	-	RFQ	Datasheet	44-LCC (J-Lead)	80C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, PWM, WDT	32	-	ROMless	-	512 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT80C51RA2-SLSUM IC MCU 8BIT ROMLESS 44PLCC Microchip Technology	2,939	-	RFQ	Datasheet	44-LCC (J-Lead)	80C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	-	ROMless	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT80C51SND1C-ROTUL IC MCU 8BIT ROMLESS 80TQFP Microchip Technology	4,332	-	RFQ	Datasheet	80-LQFP	80C	Tray	Obsolete	Not Verified	80C51	8-Bit	40MHz	I2C, IDE/ATAPI, Memory Card, SPI, UART/USART, USB	Audio, I2S, MP3, PCM, POR, WDT	44	-	ROMless	-	2.25K x 8	2.7V ~ 3.3V	A/D 2x10b	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87251G2D-3CSUM IC MCU 8/16BIT 32KB OTP 40PDIL Microchip Technology	3,842	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	8x251	Tube	Obsolete	Not Verified	C251	8/16-Bit	24MHz	EBI/EMI, I2C, Microwire, SPI, UART/USART	POR, PWM, WDT	32	32KB (32K x 8)	OTP	-	1K x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87251G2D-SLSUM IC MCU 8/16BIT 32KB OTP 44PLCC Microchip Technology	1,213	-	RFQ	Datasheet	44-LCC (J-Lead)	8x251	Tube	Obsolete	Not Verified	C251	8/16-Bit	24MHz	EBI/EMI, I2C, Microwire, SPI, UART/USART	POR, PWM, WDT	32	32KB (32K x 8)	OTP	-	1K x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C51RB2-3CSUL IC MCU 8BIT 16KB OTP 40PDIL Microchip Technology	1,539	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, PWM, WDT	32	16KB (16K x 8)	OTP	-	512 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87C51RB2-3CSUM IC MCU 8BIT 16KB OTP 40PDIL Microchip Technology	3,059	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	16KB (16K x 8)	OTP	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87C51RB2-RLTUL IC MCU 8BIT 16KB OTP 44VQFP Microchip Technology	1,678	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, PWM, WDT	32	16KB (16K x 8)	OTP	-	512 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C51RB2-RLTUM IC MCU 8BIT 16KB OTP 44VQFP Microchip Technology	2,214	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	16KB (16K x 8)	OTP	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C51RB2-SLSUL IC MCU 8BIT 16KB OTP 44PLCC Microchip Technology	1,037	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, PWM, WDT	32	16KB (16K x 8)	OTP	-	512 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C51RB2-SLSUM IC MCU 8BIT 16KB OTP 44PLCC Microchip Technology	1,543	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	16KB (16K x 8)	OTP	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C51RC2-3CSUM IC MCU 8BIT 32KB OTP 40PDIL Microchip Technology	3,603	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	32KB (32K x 8)	OTP	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87C51RC2-RLTUM IC MCU 8BIT 32KB OTP 44VQFP Microchip Technology	4,386	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	32KB (32K x 8)	OTP	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C51RC2-SLSUM IC MCU 8BIT 32KB OTP 44PLCC Microchip Technology	2,120	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	32KB (32K x 8)	OTP	-	512 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C51RD2-3CSUL IC MCU 8BIT 64KB OTP 40PDIL Microchip Technology	4,446	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, PWM, WDT	32	64KB (64K x 8)	OTP	-	1K x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole

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FREQUENTLY ASKED QUESTIONS

Microcontrollers FAQ

Common questions about selecting, comparing and sourcing Microcontrollers components through Winsun (HK) Electronics.

What should I check when selecting Microcontrollers components?

Compare the manufacturer part number, electrical specifications, package, operating conditions and application requirements. The product datasheet should be used to confirm technical suitability.

Can Winsun help source specific Microcontrollers part numbers?

Yes. Send the exact part number, manufacturer and required quantity. Winsun (HK) Electronics can assist with availability checks, quotation support and sourcing options based on your requirement.

Do you support shortage, obsolete or hard-to-find Microcontrollers parts?

Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.

How do I request a quote for Microcontrollers components?

Submit an RFQ with the part number, manufacturer, quantity and target delivery requirement. Our sales team will review your request and follow up with current sourcing information.