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
AT87C51RD2-3CSUM IC MCU 8BIT 64KB OTP 40PDIL Microchip Technology	2,870	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	64KB (64K x 8)	OTP	-	1K x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87C51RD2-SLSUL IC MCU 8BIT 64KB OTP 44PLCC Microchip Technology	4,012	-	RFQ	Datasheet	44-LCC (J-Lead)	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)	-	-	Surface Mount
AT87C51RD2-SLSUM IC MCU 8BIT 64KB OTP 44PLCC Microchip Technology	2,452	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, PWM, WDT	32	64KB (64K x 8)	OTP	-	1K x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C52X2-3CSUM IC MCU 8BIT 8KB OTP 40PDIL Microchip Technology	3,223	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR	32	8KB (8K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87C52X2-RLTUL IC MCU 8BIT 8KB OTP 44VQFP Microchip Technology	3,761	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR	32	8KB (8K x 8)	OTP	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C52X2-RLTUM IC MCU 8BIT 8KB OTP 44VQFP Microchip Technology	4,136	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR	32	8KB (8K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C52X2-SLSUL IC MCU 8BIT 8KB OTP 44PLCC Microchip Technology	4,399	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR	32	8KB (8K x 8)	OTP	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C52X2-SLSUM IC MCU 8BIT 8KB OTP 44PLCC Microchip Technology	4,587	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR	32	8KB (8K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C54X2-3CSUM IC MCU 8BIT 16KB OTP 40PDIL Microchip Technology	4,736	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, WDT	32	16KB (16K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87C54X2-RLTUL IC MCU 8BIT 16KB OTP 44VQFP Microchip Technology	4,923	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, WDT	32	16KB (16K x 8)	OTP	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C54X2-RLTUM IC MCU 8BIT 16KB OTP 44VQFP Microchip Technology	1,406	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, WDT	32	16KB (16K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C54X2-SLSUL IC MCU 8BIT 16KB OTP 44PLCC Microchip Technology	3,260	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, WDT	32	16KB (16K x 8)	OTP	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C54X2-SLSUM IC MCU 8BIT 16KB OTP 44PLCC Microchip Technology	3,085	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, WDT	32	16KB (16K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C58X2-3CSUL IC MCU 8BIT 32KB OTP 40PDIL Microchip Technology	4,642	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, WDT	32	32KB (32K x 8)	OTP	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87C58X2-3CSUM IC MCU 8BIT 32KB OTP 40PDIL Microchip Technology	4,959	-	RFQ	Datasheet	40-DIP (0.600", 15.24mm)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, WDT	32	32KB (32K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
AT87C58X2-RLTUL IC MCU 8BIT 32KB OTP 44VQFP Microchip Technology	1,870	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, WDT	32	32KB (32K x 8)	OTP	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C58X2-RLTUM IC MCU 8BIT 32KB OTP 44VQFP Microchip Technology	1,471	-	RFQ	Datasheet	44-LQFP	87C	Tray	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, WDT	32	32KB (32K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C58X2-SLSUL IC MCU 8BIT 32KB OTP 44PLCC Microchip Technology	4,747	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	30/20MHz	UART/USART	POR, WDT	32	32KB (32K x 8)	OTP	-	256 x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT87C58X2-SLSUM IC MCU 8BIT 32KB OTP 44PLCC Microchip Technology	2,320	-	RFQ	Datasheet	44-LCC (J-Lead)	87C	Tube	Obsolete	Not Verified	80C51	8-Bit	40/20MHz	UART/USART	POR, WDT	32	32KB (32K x 8)	OTP	-	256 x 8	4.5V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
AT91M43300-25CJ IC MCU 16/32BIT ROMLESS 144BGA Microchip Technology	4,361	-	RFQ	Datasheet	144-LFBGA	AT91	Tray	Obsolete	Not Verified	ARM7®	16/32-Bit	25MHz	EBI/EMI, SPI, UART/USART	WDT	58	-	ROMless	-	3K x 8	1.8V ~ 3.6V	-	External	-40°C ~ 85°C (TA)	-	-	Surface Mount

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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.