Microcontrollers

Use the filters and product table below to compare Microcontrollers components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.

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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
EFM8BB51F16I-C-TSSOP20 IC MCU 8BIT 16KB FLASH 20TSSOP Silicon Labs	4,807	-	RFQ	Datasheet	20-TSSOP (0.173", 4.40mm Width)	Busy Bee	Strip	Active	Not Verified	CIP-51 8051	8-Bit	50MHz	I2C, SMBus, SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, WDT	16	16KB (16K x 8)	FLASH	-	1.25K x 8	1.8V ~ 5.5V	A/D 16x12b SAR	Internal	-40°C ~ 125°C (TA)	-	-	Surface Mount
EFM8BB10F4A-A-QFN20 IC MCU 8BIT 4KB FLASH 20QFN Silicon Labs	3,418	-	RFQ	Datasheet	20-WFQFN Exposed Pad	Busy Bee	Tube	Active	Not Verified	CIP-51 8051	8-Bit	25MHz	I2C, SMBus, SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, WDT	16	4KB (4K x 8)	FLASH	-	512 x 8	2.2V ~ 3.6V	A/D 15x12b	Internal	-40°C ~ 125°C (TA)	Automotive	AEC-Q100	Surface Mount
EFM8BB51F16G-C-TSSOP20 IC MCU 8BIT 16KB FLASH 20TSSOP Silicon Labs	3,779	-	RFQ	Datasheet	20-TSSOP (0.173", 4.40mm Width)	Busy Bee	Strip	Active	Not Verified	CIP-51 8051	8-Bit	50MHz	I2C, SMBus, SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, WDT	16	16KB (16K x 8)	FLASH	-	1.25K x 8	1.8V ~ 5.5V	A/D 16x12b SAR	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
C8051F399-A-GM IC MCU 8BIT 4KB FLASH 20QFN Silicon Labs	2,645	-	RFQ	Datasheet	20-VFQFN Exposed Pad	C8051F39x	Tube	Active	Not Verified	8051	8-Bit	50MHz	SMBus (2-Wire/I2C), SPI, UART/USART	POR, PWM, WDT	17	4KB (4K x 8)	FLASH	-	1K x 8	1.8V ~ 3.6V	-	Internal	-40°C ~ 105°C (TA)	-	-	Surface Mount
EFM8SB20F64G-B-QFN32 IC MCU 8BIT 64KB FLASH 32QFN Silicon Labs	1,725	-	RFQ	Datasheet	32-VFQFN Exposed Pad	Sleepy Bee	Tube	Active	Not Verified	CIP-51 8051	8-Bit	25MHz	EBI/EMI, I2C, SMBus, SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, WDT	24	64KB (64K x 8)	FLASH	-	4.25K x 8	1.8V ~ 3.6V	A/D 23x10b	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
EFM8BB31F64I-B-4QFN24 IC MCU 8BIT 64KB FLASH 24QFN Silicon Labs	4,210	-	RFQ	Datasheet	24-WFQFN Exposed Pad	Busy Bee	Tube	Not For New Designs	Not Verified	CIP-51 8051	8-Bit	50MHz	I2C, SMBus, SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, WDT	20	64KB (64K x 8)	FLASH	-	4.25K x 8	2.2V ~ 3.6V	A/D 12x10/12b SAR; D/A 2x12b	Internal	-40°C ~ 125°C (TA)	-	-	Surface Mount
C8051F393-A-GM IC MCU 8BIT 16KB FLASH 20QFN Silicon Labs	4,026	-	RFQ	Datasheet	20-VFQFN Exposed Pad	C8051F39x	Tube	Active	Not Verified	8051	8-Bit	50MHz	SMBus (2-Wire/I2C), SPI, UART/USART	POR, PWM, WDT	17	16KB (16K x 8)	FLASH	-	1K x 8	1.8V ~ 3.6V	-	Internal	-40°C ~ 105°C (TA)	-	-	Surface Mount
C8051F531A-IM IC MCU 8BIT 8KB FLASH 20QFN Silicon Labs	1,186	-	RFQ	Datasheet	20-VFQFN Exposed Pad	C8051F53x	Tube	Active	Not Verified	8051	8-Bit	25MHz	SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT	16	8KB (8K x 8)	FLASH	-	256 x 8	1.8V ~ 5.25V	A/D 16x12b	Internal	-40°C ~ 125°C (TA)	-	-	Surface Mount
C8051F387-GM IC MCU 8BIT 32KB FLASH 32QFN Silicon Labs	1,016	-	RFQ	Datasheet	32-VFQFN Exposed Pad	C8051F38x	Tube	Active	Not Verified	8051	8-Bit	48 MIPS	I2C, SPI, UART/USART, USB	Brown-out Detect/Reset, POR, PWM, WDT	25	32KB (32K x 8)	FLASH	-	2.25K x 8	2.7V ~ 5.25V	-	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount
EFM8BB31F32G-B-QFN32 IC MCU 8BIT 32KB FLASH 32QFN Silicon Labs	2,021	-	RFQ	Datasheet	32-UFQFN Exposed Pad	Busy Bee	Tray	Not For New Designs	Not Verified	CIP-51 8051	8-Bit	50MHz	I2C, SMBus, SPI, UART/USART	Brown-out Detect/Reset, POR, PWM, WDT	29	32KB (32K x 8)	FLASH	-	2.25K x 8	2.2V ~ 3.6V	A/D 20x10/12b SAR; D/A 2x12b	Internal	-40°C ~ 85°C (TA)	-	-	Surface Mount

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FREQUENTLY ASKED QUESTIONS

Microcontrollers FAQ

Common questions about filtering, comparing and sourcing Microcontrollers components.

How can I narrow the Microcontrollers selection?

Use the available manufacturer and technical parameter filters to reduce the product list. Compare the remaining part numbers against your electrical, package and application requirements.

Should I confirm the datasheet before selecting a part?

Yes. Always review the manufacturer datasheet to confirm ratings, package, operating conditions and other technical details before finalizing a component for your design.

Can Winsun (HK) Electronics help source a specific Microcontrollers part number?

Yes. Send the exact manufacturer part number and required quantity for availability, lead-time and quotation support.

Do you support BOM, shortage or alternative-part requirements?

Yes. You can submit a BOM or shortage list for sourcing assistance. Where appropriate, our team can also help review possible alternative-part options.