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
W77C032A40PL IC MCU 8BIT ROMLESS 44PLCC Nuvoton Technology Corporation	2,689	-	RFQ	Datasheet	44-LCC (J-Lead)	W77	Tube	Active	Not Verified	8051	8-Bit	40MHz	EBI/EMI, Serial Port	POR, WDT	36	-	ROMless	-	1K x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W77E058A40DL IC MCU 8BIT 32KB FLASH 40DIP Nuvoton Technology Corporation	2,784	-	RFQ	Datasheet	40-DIP	W77	Tube	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, Serial Port	POR, WDT	32	32KB (32K x 8)	FLASH	-	1K x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Through Hole
W77E058A40FL IC MCU 8BIT 32KB FLASH 44QFP Nuvoton Technology Corporation	4,855	-	RFQ	Datasheet	44-BQFP	W77	Tray	Active	Not Verified	8051	8-Bit	40MHz	EBI/EMI, Serial Port	POR, WDT	36	32KB (32K x 8)	FLASH	-	1K x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W77E516A40DL IC MCU 8BIT 64KB FLASH 40DIP Nuvoton Technology Corporation	2,925	-	RFQ	Datasheet	40-DIP	W77	Tube	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, Serial Port	POR, WDT	32	64KB (64K x 8)	FLASH	-	1K x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Through Hole
W77E532A40DL IC MCU 8BIT 128KB FLASH 40DIP Nuvoton Technology Corporation	3,060	-	RFQ	Datasheet	40-DIP	W77	Tube	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, Serial Port	POR, WDT	32	128KB (128K x 8)	FLASH	-	1K x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Through Hole
W77E532A40PL IC MCU 8BIT 128KB FLASH 44PLCC Nuvoton Technology Corporation	1,524	-	RFQ	Datasheet	44-LCC (J-Lead)	W77	Tube	Last Time Buy	Not Verified	8051	8-Bit	40MHz	EBI/EMI, Serial Port	POR, WDT	36	128KB (128K x 8)	FLASH	-	1K x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W77I058A25DL IC MCU 8BIT 32KB FLASH 40DIP Nuvoton Technology Corporation	1,443	-	RFQ	Datasheet	40-DIP	W77	Tube	Obsolete	Not Verified	8051	8-Bit	25MHz	EBI/EMI, Serial Port	POR, WDT	32	32KB (32K x 8)	FLASH	-	1K x 8	2.7V ~ 5.5V	-	Internal	-40°C ~ 85°C (TA)	-	-	Through Hole
W77L058A25DL IC MCU 8BIT 32KB FLASH 40DIP Nuvoton Technology Corporation	1,642	-	RFQ	Datasheet	40-DIP	W77	Tube	Obsolete	Not Verified	8051	8-Bit	25MHz	EBI/EMI, Serial Port	POR, WDT	32	32KB (32K x 8)	FLASH	-	1K x 8	2.7V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Through Hole
W77L058A25FL IC MCU 8BIT 32KB FLASH 44QFP Nuvoton Technology Corporation	2,882	-	RFQ	Datasheet	44-BQFP	W77	Tray	Active	Not Verified	8051	8-Bit	25MHz	EBI/EMI, Serial Port	POR, WDT	36	32KB (32K x 8)	FLASH	-	1K x 8	2.7V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W77L058A25PL IC MCU 8BIT 32KB FLASH 44PLCC Nuvoton Technology Corporation	4,482	-	RFQ	Datasheet	44-LCC (J-Lead)	W77	Tube	Active	Not Verified	8051	8-Bit	25MHz	EBI/EMI, Serial Port	POR, WDT	36	32KB (32K x 8)	FLASH	-	1K x 8	2.7V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W77L516A25DL IC MCU 8BIT 64KB FLASH 40DIP Nuvoton Technology Corporation	4,767	-	RFQ	Datasheet	40-DIP	W77	Tube	Obsolete	Not Verified	8051	8-Bit	25MHz	EBI/EMI, Serial Port	POR, WDT	32	64KB (64K x 8)	FLASH	-	1K x 8	2.7V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Through Hole
W77L516A25FL IC MCU 8BIT 64KB FLASH 44QFP Nuvoton Technology Corporation	1,390	-	RFQ	Datasheet	44-BQFP	W77	Tray	Last Time Buy	Not Verified	8051	8-Bit	25MHz	EBI/EMI, Serial Port	POR, WDT	36	64KB (64K x 8)	FLASH	-	1K x 8	2.7V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W77L532A25PL IC MCU 8BIT 128KB FLASH 44PLCC Nuvoton Technology Corporation	3,648	-	RFQ	Datasheet	44-LCC (J-Lead)	W77	Tube	Last Time Buy	Not Verified	8051	8-Bit	25MHz	EBI/EMI, Serial Port	POR, WDT	36	128KB (128K x 8)	FLASH	-	1K x 8	2.7V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W78C032C40DL IC MCU 8BIT ROMLESS 40DIP Nuvoton Technology Corporation	1,070	-	RFQ	Datasheet	40-DIP	W78	Tube	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, Serial Port	-	32	-	ROMless	-	256 x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Through Hole
W78C438C40PL IC MCU 8BIT ROMLESS 84PLCC Nuvoton Technology Corporation	1,409	-	RFQ	Datasheet	84-LCC	W78	Tube	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, Serial Port	-	40	-	ROMless	-	256 x 8	4.5V ~ 5.5V	-	External	0°C ~ 70°C (TA)	-	-	Surface Mount
W78E054B40DL IC MCU 8BIT 16KB FLASH 40DIP Nuvoton Technology Corporation	2,833	-	RFQ	Datasheet	40-DIP	W78	Tube	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, UART/USART	POR, WDT	32	16KB (16K x 8)	FLASH	-	256 x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Through Hole
W78E054B40FL IC MCU 8BIT 16KB FLASH 44QFP Nuvoton Technology Corporation	4,939	-	RFQ	Datasheet	44-BQFP	W78	Tray	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, UART/USART	POR, WDT	36	16KB (16K x 8)	FLASH	-	256 x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W78E054B40PL IC MCU 8BIT 16KB FLASH 44PLCC Nuvoton Technology Corporation	3,196	-	RFQ	Datasheet	44-LCC (J-Lead)	W78	Tube	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, UART/USART	POR, WDT	36	16KB (16K x 8)	FLASH	-	256 x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Surface Mount
W78E054C40DL IC MCU 8BIT 16KB FLASH 40DIP Nuvoton Technology Corporation	4,166	-	RFQ	Datasheet	40-DIP	W78	Tube	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, UART/USART	POR, WDT	32	16KB (16K x 8)	FLASH	-	256 x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°C (TA)	-	-	Through Hole
W78E054C40FL IC MCU 8BIT 16KB FLASH 44QFP Nuvoton Technology Corporation	2,242	-	RFQ	Datasheet	44-BQFP	W78	Tray	Obsolete	Not Verified	8051	8-Bit	40MHz	EBI/EMI, UART/USART	POR, WDT	36	16KB (16K x 8)	FLASH	-	256 x 8	4.5V ~ 5.5V	-	Internal	0°C ~ 70°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.