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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 100MIPS,128KB,12ADC,100Pin MCU C8051F120-GQ Silicon Labs 1: ¥9,177 5In Stock 859Expected 9/24/2027 End of Life	Mfr. Part # C8051F120-GQ Mouser Part # 634-C8051F120-GQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 100MIPS,128KB,12ADC,100Pin MCU	Datasheet	5In Stock 859Expected 9/24/2027	¥9,177 ¥7,499.4 ¥7,079.2 ¥6,883.2 ¥6,398.2	Min.: 1 Mult.: 1	8051	128 kB	8.25 kB	TQFP-100	100 MHz	8 bit, 12 bit	64 I/O	3 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F120		Tray
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V 8-bit MCU C8051F503-IM Silicon Labs 1: ¥1,828.8 44In Stock End of Life	Mfr. Part # C8051F503-IM Mouser Part # 634-C8051F503-IM End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V 8-bit MCU	Datasheet	44In Stock	¥1,828.8 ¥1,426.8 ¥1,327.1 ¥1,217.5 View ¥1,156.1 ¥1,132.8 ¥1,074.7	Min.: 1 Mult.: 1	8051	64 kB	4.25 kB	QFN-32	50 MHz	12 bit	25 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F503	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU C8051F563-IQ Silicon Labs 1: ¥1,582.9 175In Stock End of Life	Mfr. Part # C8051F563-IQ Mouser Part # 634-C8051F563-IQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU	Datasheet	175In Stock	¥1,582.9 ¥1,225.8 ¥1,136.1 ¥1,038.1 View ¥991.6 ¥963.4 ¥938.5 Quote	Min.: 1 Mult.: 1	8051	32 kB	2.25 kB	QFP-32	50 MHz		25 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F563	AEC-Q100	Tray
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-QFP32 Silicon Labs 1: ¥554.8 8In Stock End of Life	Mfr. Part # EFM8BB31F64I-D-QFP32 Mouser Part # 634-EF8BB31F64IDQP32 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU	Datasheet	8In Stock	¥554.8 ¥413.6 ¥378.7 ¥338.8 ¥333.9	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.35 kB	QFP-32	50 MHz	10 bit, 12 bit	28 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C			Tray
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V CAN LIN 8-bit MCU C8051F506-IM Silicon Labs 1: ¥1,915.1 6In Stock NRND	Mfr. Part # C8051F506-IM Mouser Part # 634-C8051F506-IM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V CAN LIN 8-bit MCU	Datasheet	6In Stock	¥1,915.1 ¥1,499.9 ¥1,396.9 ¥1,282.3 View ¥1,269 ¥1,194.3 ¥1,167.7 Quote	Min.: 1 Mult.: 1	8051	32 kB	4.25 kB	QFN-32	50 MHz	12 bit	25 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F506	AEC-Q100	Tube
8-bit Microcontrollers - MCU USB-Flash-64k-ADC-QFN32 OTP available (T626-GM) C8051F381-GMR Silicon Labs 1: ¥1,205.9 60In Stock	Mfr. Part # C8051F381-GMR Mouser Part # 634-C8051F381-GMR	Silicon Labs	8-bit Microcontrollers - MCU USB-Flash-64k-ADC-QFN32 OTP available (T626-GM)	Datasheet	60In Stock	Cut Tape ¥1,205.9 ¥930.2 ¥860.4 ¥784 View Reel ¥671 ¥727.5 ¥725.9 ¥704.3 ¥671	Min.: 1 Mult.: 1 : 2,500	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		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32I-D-4QFN24 Silicon Labs 1: ¥400.3 375In Stock	Mfr. Part # EFM8BB31F32I-D-4QFN24 Mouser Part # 634-EF8BB31F32ID4F24	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	375In Stock	¥400.3 ¥295.7 ¥269.1 ¥240.8 View ¥227.6 ¥220.9 ¥212.6 ¥206 ¥201	Min.: 1 Mult.: 1	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			Tube
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU EFM8LB10F16E-C-QFN24 Silicon Labs 1: ¥373.7 90In Stock	Mfr. Part # EFM8LB10F16E-C-QFN24 Mouser Part # 634-LB10F16ECQFN24	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	90In Stock	¥373.7 ¥275.7 ¥250.8 ¥224.2 View ¥210.9 ¥204.3 ¥197.7 ¥192.7 ¥187.7	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	1.25 kB	QFN-24	72 MHz	10 bit/12 bit/14 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Tube
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU EFM8LB11F32E-C-QFN24R Silicon Labs 1: ¥463.4 12In Stock	Mfr. Part # EFM8LB11F32E-C-QFN24R Mouser Part # 634-LB11F32ECQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	12In Stock	Cut Tape ¥463.4 ¥343.8 ¥315.6 ¥282.4 Reel ¥240.8 View ¥267.4 ¥260.8 ¥247.5 ¥235.9	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	32 kB	2.25 kB	QFN-24	72 MHz	10 bit/12 bit/14 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F32E-C-QFN24 Silicon Labs 1: ¥503.3 255In Stock	Mfr. Part # EFM8LB12F32E-C-QFN24 Mouser Part # 634-LB12F32ECQFN24	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	255In Stock	¥503.3 ¥375.4 ¥342.2 ¥307.3 View ¥290.7 ¥284 ¥269.1 ¥260.8 ¥255.8	Min.: 1 Mult.: 1	CIP-51 8051	32 kB	2.25 kB	QFN-24	72 MHz	10 bit/12 bit/14 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Tube
8-bit Microcontrollers - MCU EFM8LB12F64ES1-C-QFN32 Silicon Labs 1: ¥616.2 279In Stock	Mfr. Part # EFM8LB12F64ES1-C-QFN32 Mouser Part # 634-LB12F64ES1CQFN32	Silicon Labs	8-bit Microcontrollers - MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	279In Stock	¥616.2 ¥458.4 ¥418.6 ¥375.4 View ¥355.5 ¥347.1 ¥330.5 ¥320.6 ¥313.9	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.25 kB	QFN-32	72 MHz	10 bit/12 bit/14 bit	29 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Tray
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU C8051F383-GM Silicon Labs 1: ¥1,001.6 3In Stock NRND	Mfr. Part # C8051F383-GM Mouser Part # 634-C8051F383-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU Learn More about Silicon Labs silabs usb mcus	Datasheet	3In Stock	¥1,001.6 ¥767.4 ¥709.2 ¥644.5 View ¥614.6 ¥596.3 ¥588	Min.: 1 Mult.: 1	8051	32 kB	2.25 kB	QFN-32	48 MHz	10 bit	25 I/O	2.7 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F383		Tube
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU EFM8LB11F16E-C-QFP32 Silicon Labs 1: ¥498.3 36In Stock NRND	Mfr. Part # EFM8LB11F16E-C-QFP32 Mouser Part # 634-LB11F16ECQFP32 NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	36In Stock	¥498.3 ¥372.1 ¥338.8 ¥304 View ¥287.4 ¥280.7 ¥267.4 ¥259.1 ¥254.1	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	1.25 kB	QFP-32	72 MHz	10 bit/12 bit/14 bit	28 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Tray
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-QFN20 Silicon Labs 1: ¥272.4 17,031On Order	Mfr. Part # EFM8SB10F8G-A-QFN20 Mouser Part # 634-8SB10F8GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	17,031On Order On Order Ship Dates Mfr. #: EFM8SB10F8G-A-QFN20 Stock: 0 On Order: 2,331 Expected 11/10/2026 14,700 Expected 12/18/2026 Factory Lead-Time: 12 Weeks	¥272.4 ¥202.6 ¥184.4 ¥162.6 View ¥152.6 ¥146.7 ¥145 ¥135.5 ¥132.5	Min.: 1 Mult.: 1	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			Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16G-C-QFN20R Silicon Labs 1: ¥265.8 93,467Expected 1/8/2027	Mfr. Part # EFM8BB21F16G-C-QFN20R Mouser Part # 634-8BB21F16GCQFN20R	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	93,467Expected 1/8/2027	Cut Tape ¥265.8 ¥194.3 ¥176.1 ¥156.6 View Reel ¥130.9 ¥147.2 ¥141.4 ¥139.7 ¥130.9 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	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		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN20R Silicon Labs 1: ¥438.5 49,037On Order	Mfr. Part # EFM8UB10F16G-C-QFN20R Mouser Part # 634-8UB10F16GCQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	49,037On Order On Order Ship Dates Mfr. #: EFM8UB10F16G-C-QFN20R Stock: 0 On Order: 40,037 Expected 1/8/2027 9,000 Expected 1/12/2027 Factory Lead-Time: 31 Weeks	Cut Tape ¥438.5 ¥367.1 ¥322.2 ¥305.6 View Reel ¥250.8 ¥299 ¥267.4 ¥250.8 ¥250.8 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	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		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB 8-bit MCU C8051F313-GMR Silicon Labs 1: ¥1,601.2 Lead-Time 16 Weeks	Mfr. Part # C8051F313-GMR Mouser Part # 634-C8051F313-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB 8-bit MCU	Datasheet	Lead-Time 16 Weeks	Cut Tape ¥1,601.2 ¥1,245.8 ¥1,157.7 ¥1,059.7 ¥1,004.9 Reel ¥986.6	Min.: 1 Mult.: 1 : 2,500	8051	8 kB	1.25 kB	QFN-24	25 MHz	10 bit	25 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F313		Reel, Cut Tape
8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM) C8051F321-GM Silicon Labs 1: ¥2,491.5 1,533Expected 11/4/2026 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	1,533Expected 11/4/2026	¥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 8kB/768B RAM, 10b ADC, 10b DAC, QFN20 OTP available (T630-GM) C8051F330-GMR Silicon Labs 1: ¥1,745.7 4,063On Order NRND	Mfr. Part # C8051F330-GMR Mouser Part # 634-C8051F330-GMR NRND	Silicon Labs	8-bit Microcontrollers - MCU 8kB/768B RAM, 10b ADC, 10b DAC, QFN20 OTP available (T630-GM)	Datasheet	4,063On Order On Order Ship Dates Mfr. #: C8051F330-GMR Stock: 0 On Order: 1,063 Pending 3,000 Expected 6/11/2027 Factory Lead-Time: 21 Weeks	Cut Tape ¥1,745.7 ¥1,386.9 ¥1,252.4 ¥1,167.7 View Reel ¥1,048.1 ¥1,137.8 ¥1,074.7 ¥1,048.1 ¥1,048.1 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8051	8 kB	768 B	QFN-20	25 MHz	10 bit	17 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F330		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 100 MHz 32 kB MAC 8-bit MCU C8051F362-C-GM Silicon Labs 1: ¥2,592.8 1,431Expected 1/15/2027 NRND	Mfr. Part # C8051F362-C-GM Mouser Part # 634-C8051F362-C-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 100 MHz 32 kB MAC 8-bit MCU	Datasheet	1,431Expected 1/15/2027	¥2,592.8 ¥2,084.6 ¥1,881.9 ¥1,765.6 View ¥1,755.7 ¥1,654.4 ¥1,604.5 Quote	Min.: 1 Mult.: 1	8051	32 kB	1 kB	QFN-28	100 MHz	10 bit	25 I/O	3 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tube
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F64E-C-QFP32 Silicon Labs 1: ¥657.8 23,750On Order NRND	Mfr. Part # EFM8LB12F64E-C-QFP32 Mouser Part # 634-LB12F64ECQFP32 NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	23,750On Order On Order Ship Dates Mfr. #: EFM8LB12F64E-C-QFP32 Stock: 0 On Order: 6,250 Expected 1/8/2027 17,500 Expected 1/15/2027 Factory Lead-Time: 26 Weeks	¥657.8 ¥531.5 ¥466.7 ¥443.5 View ¥415.3 ¥398.6	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.25 kB	QFP-32	72 MHz	10 bit/12 bit/14 bit	28 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Tray
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8G-A-QFN20 Silicon Labs 1: ¥199.3 2,519Expected 11/20/2026	Mfr. Part # EFM8BB10F8G-A-QFN20 Mouser Part # 634-8BB10F8GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	2,519Expected 11/20/2026	¥199.3 ¥144.3 ¥130.7 ¥115.4 View ¥108.3 ¥103.8 ¥99.3 ¥96.5 ¥94	Min.: 1 Mult.: 1	CIP-51 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	EFM8BB1		Tube
8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN24 C8051F390-A-GMR Silicon Labs 1: ¥724.2 1,497On Order	Mfr. Part # C8051F390-A-GMR Mouser Part # 634-C8051F390-A-GMR	Silicon Labs	8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN24	Datasheet	1,497On Order	Cut Tape ¥724.2 ¥546.5 ¥501.6 ¥451.8 View Reel ¥392 ¥428.5 ¥426.9 ¥400.3 ¥392 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8051	16 kB	1 kB	QFN-24	50 MHz	10 bit	21 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	C8051F390		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8KB/512B RAM, ADC, SOIC16 C8051F860-C-GSR Silicon Labs 1: ¥495 3,674On Order	Mfr. Part # C8051F860-C-GSR Mouser Part # 634-C8051F860-C-GSR	Silicon Labs	8-bit Microcontrollers - MCU 8KB/512B RAM, ADC, SOIC16 Learn More about Silicon Labs silabs c8051f85 c8051f86 mcus	Datasheet	3,674On Order On Order Ship Dates Mfr. #: C8051F860-C-GSR Stock: 0 On Order: 1,174 Expected 10/27/2026 2,500 Expected 12/25/2026 Factory Lead-Time: 12 Weeks	Cut Tape ¥495 ¥385.4 ¥343.8 ¥315.6 View Reel ¥244.2 ¥307.3 ¥289 ¥244.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8051	8 kB	512 B	SOIC-16	25 MHz	12 bit	13 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F860		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F32G-B-QFN24R Silicon Labs 1: ¥411.9 1,498Expected 1/29/2027	Mfr. Part # EFM8SB20F32G-B-QFN24R Mouser Part # 634-EFM8SB32GBQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,498Expected 1/29/2027	Cut Tape ¥411.9 ¥348.8 ¥274.1 ¥239.2 Reel ¥199.3 View ¥220.9 ¥214.3 ¥206 ¥194.3	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	32 kB	4.25 kB	QFN-24	25 MHz	10 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Reel, Cut Tape