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Silicon Labs 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.	Mounting Style	Package / Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Maximum Operating Temperature	Qualification	Packaging
ARM Microcontrollers - MCU 128k Flash, 16k RAM, AES EFM32G232F128G-E-QFP64 Silicon Labs 1: ¥1,267.3 225In Stock NRND	Mfr. Part # EFM32G232F128G-E-QFP64 Mouser Part # 634-32G232F128GEFP64 NRND	Silicon Labs	ARM Microcontrollers - MCU 128k Flash, 16k RAM, AES	Datasheet	225In Stock	¥1,267.3 ¥994.9 ¥915.2 ¥890.3 View ¥777.3 ¥767.4 ¥752.4 ¥715.9	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	ARM Cortex M3	32 bit	32 MHz	128 kB	16 kB	12 bit	53 I/O	1.98 V	3.8 V	+ 85 C		Tray
ARM Microcontrollers - MCU 128k Flash, 16k RAM, AES EFM32G280F128G-E-QFP100 Silicon Labs 1: ¥1,473.3 Non-Stocked Lead-Time 12 Weeks NRND	Mfr. Part # EFM32G280F128G-E-QFP100 Mouser Part # 634-32G280128GEFP100 NRND	Silicon Labs	ARM Microcontrollers - MCU 128k Flash, 16k RAM, AES	Datasheet	Non-Stocked Lead-Time 12 Weeks	¥1,473.3 ¥1,141.1 ¥1,058.1 ¥966.7 View ¥923.5 ¥896.9 ¥873.7 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	32 MHz	128 kB	16 kB	12 bit	86 I/O	1.98 V	3.8 V	+ 85 C		Tray
ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x22 LCD, AES EFM32G842F128G-E-QFP64 Silicon Labs 1: ¥1,441.7 32In Stock NRND	Mfr. Part # EFM32G842F128G-E-QFP64 Mouser Part # 634-32G842F128GEFP64 NRND	Silicon Labs	ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x22 LCD, AES	Datasheet	32In Stock	¥1,441.7 ¥1,116.2 ¥1,034.8 ¥946.8 View ¥903.6 ¥878.7 ¥853.8 ¥810.6	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	ARM Cortex M3	32 bit	32 MHz	128 kB	16 kB	12 bit	53 I/O	1.98 V	3.8 V	+ 85 C		Tray
ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x40 LCD, AES EFM32G880F128G-E-QFP100 Silicon Labs 1: ¥1,568 24In Stock NRND	Mfr. Part # EFM32G880F128G-E-QFP100 Mouser Part # 634-32G880F128EFP100 NRND	Silicon Labs	ARM Microcontrollers - MCU 128k Flash, 16k RAM, 4x40 LCD, AES	Datasheet	24In Stock	¥1,568 ¥1,219.2 ¥1,132.8 ¥1,036.5 View ¥983.3 ¥963.4 ¥941.8 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	32 MHz	128 kB	16 kB	12 bit	86 I/O	1.98 V	3.8 V	+ 85 C		Tray
ARM Microcontrollers - MCU 512k Flash, 128k RAM, USB, AES EFM32GG380F512G-E-QFP100 Silicon Labs 1: ¥2,823.7 35In Stock NRND	Mfr. Part # EFM32GG380F512G-E-QFP100 Mouser Part # 634-32GG380F512-E NRND	Silicon Labs	ARM Microcontrollers - MCU 512k Flash, 128k RAM, USB, AES Learn More about Silicon Labs energymicro efm32giant	Datasheet	35In Stock	¥2,823.7 ¥2,210.8 ¥2,058 ¥1,890.2 View ¥1,871.9 ¥1,762.3 ¥1,722.5 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	48 MHz	512 kB	128 kB	12 bit	81 I/O	1.98 V	3.8 V	+ 85 C		Tray
ARM Microcontrollers - MCU 1024k Flash, 128k RAM, USB, AES EFM32GG390F1024G-E-BGA112 Silicon Labs 1: ¥3,441.6 44In Stock NRND	Mfr. Part # EFM32GG390F1024G-E-BGA112 Mouser Part # 634-32GG390F1024-E NRND	Silicon Labs	ARM Microcontrollers - MCU 1024k Flash, 128k RAM, USB, AES Learn More about Silicon Labs energymicro efm32giant	Datasheet	44In Stock	¥3,441.6 ¥2,727.4 ¥2,549.6 ¥2,353.6 View ¥2,244 ¥2,204.1	Min.: 1 Mult.: 1	SMD/SMT	BGA-112	ARM Cortex M3	32 bit	48 MHz	1.02 MB	128 kB	12 bit	86 I/O	1.98 V	3.8 V	+ 85 C		Tray
ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU EFM32GG11B820F2048GL152-B Silicon Labs 1: ¥3,939.9 13In Stock NRND	Mfr. Part # EFM32GG11B820F2048GL152-B Mouser Part # 634-B820F2048GL152-B NRND	Silicon Labs	ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU Learn More about Silicon Labs efm32gg11 mcus	Datasheet	13In Stock	¥3,939.9 ¥3,149.3 ¥2,953.3 ¥2,735.7 View ¥2,632.7 ¥2,569.6	Min.: 1 Mult.: 1	SMD/SMT	BGA-152	ARM Cortex M4	32 bit	72 MHz	2.05 MB	512 kB	12 bit	121 I/O	1.8 V	3.8 V	+ 85 C		Tray
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	SMD/SMT	QFN-20	8051	8 bit	50 MHz	16 kB	1 kB	10 bit	17 I/O	1.8 V	3.6 V	+ 105 C		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB 8-bit MCU C8051F860-C-GS Silicon Labs 1: ¥498.3 225In Stock NRND	Mfr. Part # C8051F860-C-GS Mouser Part # 634-C8051F860-C-GS NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB 8-bit MCU Learn More about Silicon Labs silabs c8051f85 c8051f86 mcus	Datasheet	225In Stock	¥498.3 ¥372.1 ¥338.8 ¥304 View ¥287.4 ¥280.7 ¥267.4 ¥259.1 ¥254.1	Min.: 1 Mult.: 1	SMD/SMT	SOIC-16	8051	8 bit	25 MHz	8 kB	512 B	12 bit	13 I/O	2.2 V	3.6 V	+ 85 C	AEC-Q100	Tube
ARM Microcontrollers - MCU ARM Cortex-M0+ 48 MHz 128 kB flash 32 kB RAM MCU EFM32TG11B120F128IM64-B Silicon Labs 1: ¥1,016.5 153In Stock NRND	Mfr. Part # EFM32TG11B120F128IM64-B Mouser Part # 634-EFM32TG128IM64-B NRND	Silicon Labs	ARM Microcontrollers - MCU ARM Cortex-M0+ 48 MHz 128 kB flash 32 kB RAM MCU Learn More about Silicon Labs energymicroefm32tg	Datasheet	153In Stock	¥1,016.5 ¥779 ¥720.9 ¥654.4 View ¥624.5 ¥604.6 ¥598 ¥591.3	Min.: 1 Mult.: 1	SMD/SMT	QFN-64	ARM Cortex M0+	32 bit	48 MHz	128 kB	32 kB	12 bit	56 I/O	1.8 V	3.8 V	+ 125 C		Tray
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	SMD/SMT	QFN-20	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	12 bit	16 I/O	2.2 V	3.6 V	+ 85 C		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: ¥340.5 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	¥340.5 ¥250.8 ¥227.6 ¥204.3 View ¥191 ¥184.4 ¥177.7 ¥174.4 ¥167.8	Min.: 1 Mult.: 1	SMD/SMT	QFN-28	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	12 bit	22 I/O	2.2 V	3.6 V	+ 85 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB22F16G-C-QFN28R Silicon Labs 1: ¥357.1 111In Stock	Mfr. Part # EFM8BB22F16G-C-QFN28R Mouser Part # 634-8BB22F16GCQFN28R	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	111In Stock	Cut Tape ¥357.1 ¥300.6 ¥264.1 ¥249.2 Reel ¥160.8 View ¥210.9 ¥196 ¥189.4 ¥159.8 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-28	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	12 bit	22 I/O	2.2 V	3.6 V	+ 85 C		Reel, Cut Tape, MouseReel
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 14In 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	14In Stock	¥428.5 ¥360.4 ¥315.6 ¥295.7 ¥264.1	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	8 bit	50 MHz	16 kB	2.25 kB	12 bit	13 I/O	2.2 V	3.6 V	+ 85 C		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	SMD/SMT	QFN-28	CIP-51 8051	8 bit	50 MHz	16 kB	2.25 kB	12 bit	22 I/O	2.2 V	3.6 V	+ 85 C		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 48In 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	48In 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	SMD/SMT	QFN-20	CIP-51 8051	8 bit	50 MHz	16 kB	2.25 kB	12 bit	16 I/O	2.2 V	3.6 V	+ 125 C	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: ¥295.7 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 ¥295.7 ¥232.5 ¥207.6 ¥191 View Reel ¥148.8 ¥184.4 ¥176.1 ¥148.8 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	8 bit	50 MHz	16 kB	2.25 kB	12 bit	16 I/O	2.2 V	3.6 V	+ 125 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-QFN32R Silicon Labs 1: ¥315.6 979In Stock 2,500Expected 5/14/2027	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 5/14/2027	Cut Tape ¥315.6 ¥255.8 ¥220.9 ¥207.6 View Reel ¥165.4 ¥182.7 ¥176.1 ¥165.4 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	+ 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	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	+ 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	SMD/SMT	QFN-24	CIP-51 8051	8 bit	50 MHz	32 kB	2.3 kB	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	+ 125 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFN32R Silicon Labs 1: ¥443.5 5In Stock 2,500Expected 4/29/2027	Mfr. Part # EFM8BB31F64G-D-QFN32R Mouser Part # 634-EF8BB31F64GDN32R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	5In Stock 2,500Expected 4/29/2027	Cut Tape ¥443.5 ¥328.9 ¥300.6 ¥269.1 ¥264.1 Reel ¥224.2	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-TSSOP20 Silicon Labs 1: ¥177.7 1,452In Stock	Mfr. Part # EFM8BB51F16G-C-TSSOP20 Mouser Part # 634-EFM8516GCTSSOP20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	1,452In Stock	¥177.7 ¥140.9 ¥129.4 ¥119.3 View ¥99.8 ¥98.7	Min.: 1 Mult.: 1	SMD/SMT	TSSOP-20				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C		Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-QFN20 Silicon Labs 1: ¥179.4 151In Stock	Mfr. Part # EFM8BB51F16G-C-QFN20 Mouser Part # 634-EFM851F16GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	151In Stock	¥179.4 ¥129.6 ¥116.6 ¥102.5 View ¥95.8 ¥91.9 ¥88.9 ¥84.9 ¥82.9	Min.: 1 Mult.: 1	SMD/SMT	QFN-20				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C		Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-QFN20R Silicon Labs 1: ¥154.5 1,016In Stock 7,500On Order	Mfr. Part # EFM8BB51F16G-C-QFN20R Mouser Part # 634-EFM851F16GQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	1,016In Stock 7,500On Order	Cut Tape ¥154.5 ¥111.1 ¥100.2 ¥88 View Reel ¥78.7 ¥82.4 ¥78.9 ¥78.7	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-QFN20 Silicon Labs 1: ¥189.4 194In Stock	Mfr. Part # EFM8BB51F16I-C-QFN20 Mouser Part # 634-EFM851F16ICQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	194In Stock	¥189.4 ¥136.9 ¥123.2 ¥108.5 View ¥101.3 ¥97 ¥94 ¥89.9 ¥87.5	Min.: 1 Mult.: 1	SMD/SMT	QFN-20				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C		Cut Tape