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Silicon Labs 8-bit Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	Core	Program Memory Size	Data RAM Size	Package / Case	Maximum Clock Frequency	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Data Bus Width	Minimum Operating Temperature	Maximum Operating Temperature	Series	Qualification	Packaging
8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM) C8051F321-GM Silicon Labs 1: ¥2,491.5 1,533In Stock NRND	Mfr. Part # C8051F321-GM Mouser Part # 634-C8051F321-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM)	Datasheet	1,533In Stock	¥2,491.5 ¥2,003.2 ¥1,808.8 ¥1,695.9 View ¥1,687.6 ¥1,589.6 ¥1,546.4 Quote	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QFN-28	25 MHz	10 bit	21 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F321		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU C8051F381-GM Silicon Labs 1: ¥1,205.9 415In Stock 1,533Expected 6/18/2027 NRND	Mfr. Part # C8051F381-GM Mouser Part # 634-C8051F381-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU Learn More about Silicon Labs silabs usb mcus	Datasheet	415In Stock 1,533Expected 6/18/2027	¥1,205.9 ¥930.2 ¥860.4 ¥784 View ¥727.5 ¥725.9 ¥704.3	Min.: 1 Mult.: 1	8051	64 kB	4.25 kB	QFN-32	48 MHz	10 bit	25 I/O	2.7 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F381		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU C8051F411-GM Silicon Labs 1: ¥2,244 1,052In Stock 1,533Expected 11/4/2026 NRND	Mfr. Part # C8051F411-GM Mouser Part # 634-C8051F411-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU	Datasheet	1,052In Stock 1,533Expected 11/4/2026	¥2,244 ¥1,842 ¥1,680.9 ¥1,587.9 View ¥1,581.3 ¥1,501.5 Quote	Min.: 1 Mult.: 1	8051	32 kB	2.31 kB	QFN-28	50 MHz	12 bit	20 I/O	2 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F411		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F2G-A-QFN20 Silicon Labs 1: ¥220.9 1,008In Stock 6,300On Order	Mfr. Part # EFM8SB10F2G-A-QFN20 Mouser Part # 634-8SB10F2GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,008In Stock 6,300On Order	¥220.9 ¥171.1 ¥152.5 ¥135.5 View ¥131.1 ¥124.2 ¥121.4 ¥117.3 ¥111.6	Min.: 1 Mult.: 1	CIP-51 8051	2 kB	256 B	QFN-20	25 MHz	12 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tube
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F4G-A-QFN20 Silicon Labs 1: ¥265.8 2In Stock	Mfr. Part # EFM8SB10F4G-A-QFN20 Mouser Part # 634-8SB10F4GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	2In Stock	¥265.8 ¥194.3 ¥176.1 ¥156.6 View ¥147.2 ¥141.4 ¥139.7 ¥130.9 ¥127.9	Min.: 1 Mult.: 1	CIP-51 8051	4 kB	512 B	QFN-20	25 MHz	12 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-QFN20R Silicon Labs 1: ¥280.7 408In Stock 4,500Expected 11/27/2026	Mfr. Part # EFM8SB10F8G-A-QFN20R Mouser Part # 634-8SB10F8GAQF20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU	Datasheet	408In Stock 4,500Expected 11/27/2026	Cut Tape ¥280.7 ¥217.6 ¥192.7 ¥176.1 Reel ¥150.5 View ¥169.4 ¥155.8 ¥150.5 ¥143.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	8 kB	512 B	QFN-20	25 MHz	12 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8kB/512B RAM, ADC, QFN20 C8051F850-C-GMR Silicon Labs 1: ¥490 309In Stock	Mfr. Part # C8051F850-C-GMR Mouser Part # 634-C8051F850-C-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8kB/512B RAM, ADC, QFN20 Learn More about Silicon Labs silabs c8051f85 c8051f86 mcus	Datasheet	309In Stock	Cut Tape ¥490 ¥365.4 ¥333.9 ¥299 Reel ¥254.1 View ¥282.4 ¥275.7 ¥262.4 ¥249.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8051	8 kB	512 B	QFN-20	25 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F850		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU EFM8BB50F16I-A-QFN12 Silicon Labs 1: ¥169.4 100In Stock	Mfr. Part # EFM8BB50F16I-A-QFN12 Mouser Part # 634-M8BB50F16IAQFN12	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	100In Stock	¥169.4 ¥122.1 ¥110 ¥96.7 View ¥90.4 ¥86.5 ¥83.7 ¥80.1 ¥78.1	Min.: 1 Mult.: 1		16 kB	512 B	QFN-12	50 MHz	12 bit	9 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 125 C	BB50		Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F16I-A-QFN16 Silicon Labs 1: ¥152.8 71In Stock	Mfr. Part # EFM8BB50F16I-A-QFN16 Mouser Part # 634-M8BB50F16IAQFN16	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	71In Stock	¥152.8 ¥122.4 ¥110 ¥92.5 View ¥92.4 ¥90.4 ¥87.5 ¥83.7 ¥81.7	Min.: 1 Mult.: 1		16 kB	512 B	QFN-16	50 MHz	12 bit	12 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 125 C	BB50		Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB11F16G-C-QSOP24 Silicon Labs 1: ¥438.5 122In Stock End of Life	Mfr. Part # EFM8UB11F16G-C-QSOP24 Mouser Part # 634-8UB11F16GCQSOP24 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	122In Stock	¥438.5 ¥345.5 ¥307.3 ¥284 View ¥267.4 ¥257.5 ¥247.5 ¥244.2 ¥239.2	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.25 kB	QSOP-24	50 MHz	12 bit	17 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8UB		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB 8-bit MCU C8051F005-GQ Silicon Labs 1: ¥5,873.3 174In Stock 800Expected 1/22/2027 End of Life	Mfr. Part # C8051F005-GQ Mouser Part # 634-C8051F005-GQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 32 kB 8-bit MCU	Datasheet	174In Stock 800Expected 1/22/2027	¥5,873.3 ¥4,906.6 ¥4,433.2 ¥4,185.7	Min.: 1 Mult.: 1	8051	32 kB	2.25 kB	TQFP-64	25 MHz	12 bit	32 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F005		Tray
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB 8-bit MCU C8051F005-GQR Silicon Labs 1: ¥5,732.1 234In Stock End of Life	Mfr. Part # C8051F005-GQR Mouser Part # 634-C8051F005-GQR End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 32 kB 8-bit MCU	Datasheet	234In Stock	Cut Tape ¥5,732.1 ¥4,640.8 ¥4,368.4 ¥4,187.4 ¥3,924.9 Reel ¥3,924.9	Min.: 1 Mult.: 1 : 500	8051	32 kB	2.25 kB	TQFP-64	25 MHz	12 bit	32 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F005		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB 8-bit MCU C8051F021-GQR Silicon Labs 1: ¥7,188.8 278In Stock End of Life	Mfr. Part # C8051F021-GQR Mouser Part # 634-C8051F021-GQR End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB 8-bit MCU	Datasheet	278In Stock	Cut Tape ¥7,188.8 ¥5,899.9 ¥5,504.6 ¥5,418.2 ¥5,403.2 Reel ¥4,826.9 MouseReel Available	Min.: 1 Mult.: 1 : 500	8051	64 kB	4.35 kB	TQFP-64	25 MHz	8 bit, 12 bit	32 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F021		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V CAN LIN 8-bit MCU C8051F500-IM Silicon Labs 1: ¥2,182.6 181In Stock End of Life	Mfr. Part # C8051F500-IM Mouser Part # 634-C8051F500-IM End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V CAN LIN 8-bit MCU	Datasheet	181In Stock	¥2,182.6 ¥1,901.8 ¥1,591.2 ¥1,461.7 View ¥1,453.4 ¥1,405.2 ¥1,386.9 Quote	Min.: 1 Mult.: 1	8051	64 kB	4.25 kB	QFN-48	50 MHz	12 bit	40 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F500	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB 5 V LIN 8-bit MCU C8051F530-C-IM Silicon Labs 1: ¥960.1 777In Stock End of Life	Mfr. Part # C8051F530-C-IM Mouser Part # 634-C8051F530-C-IM End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB 5 V LIN 8-bit MCU	Datasheet	777In Stock	¥960.1 ¥730.8 ¥674.4 ¥611.2 View ¥581.4 ¥573 ¥564.7	Min.: 1 Mult.: 1	8051	8 kB	256 B	QFN-20	25 MHz	12 bit	16 I/O	2 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F530	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB LFO 8-bit MCU C8051F392-A-GM Silicon Labs 1: ¥720.9 395In Stock 1,911Expected 11/2/2026 NRND	Mfr. Part # C8051F392-A-GM Mouser Part # 634-C8051F392-A-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB LFO 8-bit MCU Learn More about Silicon Labs siliconlabs c8051f37x	Datasheet	395In Stock 1,911Expected 11/2/2026	¥720.9 ¥543.1 ¥498.3 ¥450.1 View ¥426.9 ¥423.6 ¥398.6 ¥388.7	Min.: 1 Mult.: 1	8051	16 kB	1 kB	QFN-20	50 MHz	10 bit	17 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	C8051F392		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16G-C-QFN20 Silicon Labs 1: ¥284 50In Stock 2,520Expected 1/8/2027	Mfr. Part # EFM8BB21F16G-C-QFN20 Mouser Part # 634-8BB21F16GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	50In Stock 2,520Expected 1/8/2027	¥284 ¥240.8 ¥210.9 ¥176.1	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QFN-20	50 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8BB2		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB22F16G-C-QFN28 Silicon Labs 1: ¥348.8 1,187In Stock	Mfr. Part # EFM8BB22F16G-C-QFN28 Mouser Part # 634-8BB22F16GCQFN28	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	1,187In Stock	¥348.8 ¥294 ¥250.8 ¥237.5 View ¥232.5 ¥206 ¥164.4 ¥160.8	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QFN-28	50 MHz	12 bit	22 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8BB2		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN20 Silicon Labs 1: ¥428.5 164In Stock	Mfr. Part # EFM8UB10F16G-C-QFN20 Mouser Part # 634-8UB10F16GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	164In Stock	¥428.5 ¥360.4 ¥315.6 ¥295.7 ¥264.1	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.25 kB	QFN-20	50 MHz	12 bit	13 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8UB		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN28R Silicon Labs 1: ¥450.1 105In Stock 7,500Expected 1/8/2027	Mfr. Part # EFM8UB10F16G-C-QFN28R Mouser Part # 634-8UB10F16GCQFN28R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	105In Stock 7,500Expected 1/8/2027	Cut Tape ¥450.1 ¥378.7 ¥332.2 ¥313.9 View Reel ¥264.1 ¥272.4 ¥264.1 ¥264.1	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	16 kB	2.25 kB	QFN-28	50 MHz	12 bit	22 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8UB		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16A-C-QFN20R Silicon Labs 1: ¥553.1 298In Stock	Mfr. Part # EFM8BB21F16A-C-QFN20R Mouser Part # 634-BB21F16ACQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	298In Stock	Cut Tape ¥553.1 ¥411.9 ¥377 ¥337.2 Reel ¥287.4 View ¥318.9 ¥312.3 ¥295.7 ¥282.4	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	16 kB	2.25 kB	QFN-20	50 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB2	AEC-Q100	Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16I-C-QFN20R Silicon Labs 1: ¥307.3 331In Stock	Mfr. Part # EFM8BB21F16I-C-QFN20R Mouser Part # 634-BB21F16ICQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	331In Stock	Cut Tape ¥307.3 ¥260.8 ¥229.2 ¥215.9 View Reel ¥150 ¥172.7 ¥165.3 ¥150 ¥150 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	16 kB	2.25 kB	QFN-20	50 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB2		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F16G-D-QFN32R Silicon Labs 1: ¥308.9 979In Stock 2,500Expected 4/26/2027	Mfr. Part # EFM8BB31F16G-D-QFN32R Mouser Part # 634-EF8BB31F16GDN32R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	979In Stock 2,500Expected 4/26/2027	Cut Tape ¥308.9 ¥255.8 ¥220.9 ¥207.6 Reel ¥157 View ¥182.7 ¥171.1 ¥152.8 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	16 kB	2.3 kB	QFN-32	50 MHz	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F16G-D-QFN32 Silicon Labs 1: ¥292.3 1,432In Stock	Mfr. Part # EFM8BB31F16G-D-QFN32 Mouser Part # 634-EF8BB31F16GDQN32	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	1,432In Stock	¥292.3 ¥247.5 ¥217.6 ¥206 View ¥182.7 ¥174.4 ¥167.8 ¥160.8 ¥159	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QFN-32	50 MHz	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tray
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32I-D-4QFN24R Silicon Labs 1: ¥400.3 617In Stock	Mfr. Part # EFM8BB31F32I-D-4QFN24R Mouser Part # 634-EF8BB31F32ID424R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	617In Stock	Cut Tape ¥400.3 ¥295.7 ¥269.1 ¥240.8 Reel ¥206 View ¥227.6 ¥220.9 ¥212.6 ¥201	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	32 kB	2.3 kB	QFN-24	50 MHz	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C			Reel, Cut Tape