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Silicon Labs 8-bit Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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 32kB/4kB RAM, 10b ADC, DC-DC, 0.9V, QFN32 C8051F920-G-GMR Silicon Labs 1: $4.69 1,313In Stock End of Life	Mfr. Part No. C8051F920-G-GMR Mouser Part No 634-C8051F920-G-GMR End of Life	Silicon Labs	8-bit Microcontrollers - MCU 32kB/4kB RAM, 10b ADC, DC-DC, 0.9V, QFN32 Learn More about Silicon Labs Silicon_Labs_C8051F9xx_MCU	Datasheet	1,313In Stock	Cut Tape $4.69 $3.90 $3.62 $3.26 Reel $2.74 View $3.07 $2.98 $2.78 $2.69 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	8051	32 kB	4.25 kB	QFN-32	25 MHz	10 bit	24 I/O	900 mV	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 32kB/4kB RAM, 10bADC, DC-DC, 0.9V, QFN24 C8051F921-G-GMR Silicon Labs 1: $4.31 796In Stock End of Life	Mfr. Part No. C8051F921-G-GMR Mouser Part No 634-C8051F921-G-GMR End of Life	Silicon Labs	8-bit Microcontrollers - MCU 32kB/4kB RAM, 10bADC, DC-DC, 0.9V, QFN24 Learn More about Silicon Labs Silicon_Labs_C8051F9xx_MCU	Datasheet	796In Stock	Cut Tape $4.31 $3.38 $3.07 $2.80 View Reel $2.41 $2.58 $2.56 $2.48 $2.41	Min.: 1 Mult.: 1 : 1,500	8051	32 kB	4.25 kB	QFN-24	25 MHz	10 bit	16 I/O	900 mV	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F64G-B-QFN32 Silicon Labs 1: $4.50 1,076In Stock End of Life	Mfr. Part No. EFM8SB20F64G-B-QFN32 Mouser Part No 634-EFM8SBF64GBQFN32 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,076In Stock	$4.50 $2.98 $2.52 $2.31 View $2.20 $1.97 $1.94 $1.77 $1.76	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.25 kB	QFN-32	25 MHz	10 bit	24 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Tube
8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU C8051F351-GM Silicon Labs 1: $16.04 978In Stock NRND	Mfr. Part No. C8051F351-GM Mouser Part No 634-C8051F351-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU	Datasheet	978In Stock	$16.04 $12.56 $11.66 $10.75 View $10.64 $9.97 $9.79 Quote	Min.: 1 Mult.: 1	8051	8 kB	768 B	QFN-28	50 MHz	24 bit	17 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F351		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB 8-bit MCU C8051F390-A-GM Silicon Labs 1: $4.37 997In Stock NRND	Mfr. Part No. C8051F390-A-GM Mouser Part No 634-C8051F390-A-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB 8-bit MCU Learn More about Silicon Labs siliconlabs c8051f37x	Datasheet	997In Stock	$4.37 $3.30 $3.04 $2.73 View $2.59 $2.58 $2.42 $2.36	Min.: 1 Mult.: 1	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		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V CAN LIN 8-bit MCU C8051F502-IM Silicon Labs 1: $11.71 548In Stock NRND	Mfr. Part No. C8051F502-IM Mouser Part No 634-C8051F502-IM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V CAN LIN 8-bit MCU	Datasheet	548In Stock	$11.71 $9.40 $8.47 $7.92 View $7.70 $7.40 $7.32 Quote	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	C8051F502	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V CAN LIN 8-bit MCU C8051F550-IM Silicon Labs 1: $9.26 1,919In Stock NRND	Mfr. Part No. C8051F550-IM Mouser Part No 634-C8051F550-IM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V CAN LIN 8-bit MCU	Datasheet	1,919In Stock	$9.26 $7.18 $6.65 $6.07 View $5.80 $5.63 $5.48 $5.20	Min.: 1 Mult.: 1	8051	32 kB	2.25 kB	QFN-24	50 MHz	12 bit	18 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F550	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU C8051F553-IM Silicon Labs 1: $8.68 Non-Stocked Lead-Time 12 Weeks NRND	Mfr. Part No. C8051F553-IM Mouser Part No 634-C8051F553-IM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU	Datasheet	Non-Stocked Lead-Time 12 Weeks	$8.68 $7.19 $6.11 $5.85 View $5.52 $4.79	Min.: 1 Mult.: 1	8051	32 kB	2.25 kB	QFN-24	50 MHz	12 bit	18 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F553	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB 8-bit MCU C8051F860-C-GS Silicon Labs 1: $3.00 225In Stock NRND	Mfr. Part No. C8051F860-C-GS Mouser Part No 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	$3.00 $2.24 $2.04 $1.83 View $1.73 $1.69 $1.60 $1.56 $1.54	Min.: 1 Mult.: 1	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	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16I-C-QFN20 Silicon Labs 1: $1.76 3,254In Stock	Mfr. Part No. EFM8BB21F16I-C-QFN20 Mouser Part No 634-8BB21F16I-CQFN20	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	3,254In Stock	$1.76 $1.48 $1.30 $1.21 View $1.17 $1.02 $0.862 $0.807	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	+ 125 C	EFM8BB2		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-CSP16R Silicon Labs 1: $1.99 4,899In Stock 7,500On Order	Mfr. Part No. EFM8SB10F8G-A-CSP16R Mouser Part No 634-8SB10F8GA-CSP16R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU	Datasheet	4,899In Stock 7,500On Order	Cut Tape $1.99 $1.47 $1.34 $1.19 Reel $1.02 View $1.12 $1.08 $1.04 $0.989 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	8 kB	256 B	CSP-16	25 MHz	12 bit	13 I/O	3.6 V	2.2 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU C8051F311-GMR Silicon Labs 1: $12.36 355In Stock 3,000Expected 2026/11/27	Mfr. Part No. C8051F311-GMR Mouser Part No 634-C8051F311-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU	Datasheet	355In Stock 3,000Expected 2026/11/27	Cut Tape $12.36 $9.85 $8.92 $8.34 View Reel $7.27 $8.30 $7.73 $7.49 $7.27 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8051	16 kB	1.25 kB	QFN-28	25 MHz	10 bit	25 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F311		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU C8051F411-GMR Silicon Labs 1: $14.06 1,837In Stock	Mfr. Part No. C8051F411-GMR Mouser Part No 634-C8051F411-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU	Datasheet	1,837In Stock	Cut Tape $14.06 $11.47 $10.51 $9.87 View Reel $8.76 $9.82 $9.46 $8.89 $8.76 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8051	32 kB	2.25 kB	QFN-28	50 MHz	12 bit	20 I/O	2 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F411		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFN24R Silicon Labs 1: $3.68 2,120In Stock	Mfr. Part No. EFM8BB31F64G-D-QFN24R Mouser Part No 634-EF8BB31F64GDF24R	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	2,120In Stock	Cut Tape $3.68 $2.48 $2.30 $2.00 Reel $1.55 View $1.87 $1.64 $1.55 $1.33 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	64 kB	4.35 kB	QFN-24	50 MHz	10 bit, 12 bit	20 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 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFN32R Silicon Labs 1: $2.67 1,148In Stock	Mfr. Part No. EFM8BB31F64G-D-QFN32R Mouser Part No 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	1,148In Stock	Cut Tape $2.67 $1.98 $1.81 $1.62 Reel $1.40 View $1.54 $1.48 $1.42 $1.35	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	64 kB	4.35 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
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFN24 Silicon Labs 1: $2.54 5,887In Stock	Mfr. Part No. EFM8BB31F64G-D-QFN24 Mouser Part No 634-EF8BB31F64GDQF24	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	5,887In Stock	$2.54 $2.13 $1.86 $1.74 View $1.56 $1.45 $1.34 $1.29	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.35 kB	QFN-24	50 MHz	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFN32 Silicon Labs 1: $2.79 947In Stock 4,900On Order	Mfr. Part No. EFM8BB31F64G-D-QFN32 Mouser Part No 634-EF8BB31F64GDQN32	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	947In Stock 4,900On Order	$2.79 $2.20 $1.97 $1.81 View $1.70 $1.54	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.35 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 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-4QFN24R Silicon Labs 1: $2.85 993In Stock 1,500Expected 2026/11/30	Mfr. Part No. EFM8BB31F64I-D-4QFN24R Mouser Part No 634-EF8BB31F64ID424R	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	993In Stock 1,500Expected 2026/11/30	Cut Tape $2.85 $2.12 $1.94 $1.74 Reel $1.57 View $1.65 $1.60 $1.56 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	64 kB	4.35 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, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-QFN32R Silicon Labs 1: $3.06 2,500In Stock	Mfr. Part No. EFM8BB31F64I-D-QFN32R Mouser Part No 634-EF8BB31F64IDN32R	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	2,500In Stock	Cut Tape $3.06 $2.28 $2.08 $1.87 Reel $1.59 View $1.76 $1.72 $1.64 $1.56	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	64 kB	4.35 kB	QFN-32	50 MHz	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C			Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-QFN32 Silicon Labs 1: $3.07 1,517In Stock	Mfr. Part No. EFM8BB31F64I-D-QFN32 Mouser Part No 634-EF8BB31F64IDQN32	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	1,517In Stock	$3.07 $2.29 $2.09 $1.88 View $1.77 $1.73 $1.65 $1.59 $1.56	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.35 kB	QFN-32	50 MHz	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C			Tray
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-QFN20R Silicon Labs 1: $1.11 12,398In Stock	Mfr. Part No. EFM8BB51F16I-C-QFN20R Mouser Part No 634-EFM851F16IQFN20R	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	12,398In Stock	Cut Tape $1.11 $0.947 $0.83 $0.762 Reel $0.538 View $0.709 $0.649 $0.594 $0.48	Min.: 1 Mult.: 1 : 2,500		16 kB	1.28 kB	QFN-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C			Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F32G-C-QFN32R Silicon Labs 1: $1.11 4,000In Stock	Mfr. Part No. EFM8BB52F32G-C-QFN32R Mouser Part No 634-EFM852F32GQFN32R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	4,000In Stock	Cut Tape $1.11 $0.802 $0.722 $0.635 Reel $0.526 View $0.594 $0.568 $0.55 $0.513	Min.: 1 Mult.: 1 : 2,500		16 kB	1.28 kB	QFN-32			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 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-QFN20 Silicon Labs 1: $3.36 2,983In Stock	Mfr. Part No. EFM8BB21F16A-C-QFN20 Mouser Part No 634-EFM8BB21F16FN20	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	2,983In Stock	$3.36 $2.65 $2.37 $2.17 View $2.09 $1.98 $1.93 $1.90 $1.84	Min.: 1 Mult.: 1	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	Tube
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F32E-C-QFN24R Silicon Labs 1: $3.04 980In Stock	Mfr. Part No. EFM8LB12F32E-C-QFN24R Mouser Part No 634-LB12F32ECQFN24R	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	980In Stock	Cut Tape $3.04 $2.26 $2.06 $1.85 Reel $1.57 View $1.76 $1.71 $1.62 $1.54 MouseReel Available	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, MouseReel
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F64E-C-QFN32R Silicon Labs 1: $3.54 3,872In Stock	Mfr. Part No. EFM8LB12F64E-C-QFN32R Mouser Part No 634-LB12F64ECQFN32R	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	3,872In Stock	Cut Tape $3.54 $2.76 $2.45 $2.26 View Reel $1.78 $2.19 $2.11 $1.78	Min.: 1 Mult.: 1 : 2,500	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		Reel, Cut Tape