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50 MHz 8-bit Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) 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 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F16G-D-QFN32R Silicon Labs 1: $2.74 979In Stock 2,500Expected 2027-05-14	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 2027-05-14	Cut Tape $2.74 $2.22 $1.92 $1.80 View Reel $1.43 $1.58 $1.53 $1.43 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: $2.53 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	$2.53 $2.15 $1.89 $1.79 View $1.58 $1.51 $1.45 $1.39 $1.38	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: $3.47 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 $3.47 $2.56 $2.33 $2.09 Reel $1.79 View $1.97 $1.92 $1.84 $1.74	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
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: $3.84 5In Stock 2,500Expected 2027-04-29	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 2027-04-29	Cut Tape $3.84 $2.85 $2.61 $2.33 $2.29 Reel $1.94	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 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F16I-D-QFP32 Silicon Labs 1: $3.51 8In Stock NRND	Mfr. Part # EFM8BB31F16I-D-QFP32 Mouser Part # 634-EF8BB31F16IDQP32 NRND	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	8In Stock	$3.51 $2.59 $2.36 $2.12 View $1.99 $1.93 $1.86	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 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 8KB,24ADC,28Pin MCU C8051F351-GMR Silicon Labs 1: $23.08 97In Stock	Mfr. Part # C8051F351-GMR Mouser Part # 634-C8051F351-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU	Datasheet	97In Stock	Cut Tape $23.08 $18.07 $16.83 $15.45 View Reel $13.33 $15.31 $14.40 $14.08 $13.33	Min.: 1 Mult.: 1 : 2,500	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		Reel, Cut Tape
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246LTI-149 Infineon Technologies 1: $20.68 8In Stock	Mfr. Part # CY8C3246LTI-149 Mouser Part # 727-CY8C3246LTI-149	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	8In Stock	$20.68 $16.06 $14.49 $13.65 View $13.02 $12.63 $12.04 Quote	Min.: 1 Mult.: 1	8051	64 kB	8 kB	QFN-68	50 MHz	12 bit	46 I/O	1.71 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	CY8C3246		Tray
8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 38 I/O CY8C3246LTI-149T Infineon Technologies 1: $20.92 23In Stock	Mfr. Part # CY8C3246LTI-149T Mouser Part # 727-CY8C3246LTI-149T	Infineon Technologies	8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 38 I/O Learn More about Infineon Technologies cypress psoc	Datasheet	23In Stock	Cut Tape $20.92 $15.90 $15.24 $13.42 View Reel $12.02 $12.77 $12.34 $12.04 $12.02 Quote	Min.: 1 Mult.: 1 : 2,000	8051	64 kB	8 kB	QFN-68	50 MHz	12 bit	46 I/O	1.71 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	CY8C3246		Reel, Cut Tape
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246LTI-162 Infineon Technologies 1: $17.86 2In Stock	Mfr. Part # CY8C3246LTI-162 Mouser Part # 727-CY8C3246LTI-162	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	2In Stock	$17.86 $14.52 $13.84 $12.02 View $11.48 $10.04 $9.68 Quote	Min.: 1 Mult.: 1	8051	64 kB	8 kB	QFN-48	50 MHz	12 bit	29 I/O	1.71 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	CY8C3246		Tray
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3446LTI-085 Infineon Technologies 1: $23.26 6In Stock	Mfr. Part # CY8C3446LTI-085 Mouser Part # 727-CY8C3446LTI-085	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	6In Stock	$23.26 $18.20 $16.39 $15.49 View $14.79 $14.36 $14.11 Quote	Min.: 1 Mult.: 1	8051	64 kB	8 kB	QFN-68	50 MHz	12 bit	48 I/O	1.71 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	CY8C3446		Tray
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU C8051F563-IQ Silicon Labs 1: $13.72 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	$13.72 $10.63 $9.85 $9.00 View $8.60 $8.35 $8.14 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: $4.81 25In 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	25In Stock	$4.81 $3.59 $3.28 $2.94 $2.89	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: $16.60 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	$16.60 $13.00 $12.11 $11.12 View $11.00 $10.35 $10.12 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 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32I-D-4QFN24 Silicon Labs 1: $3.47 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	$3.47 $2.56 $2.33 $2.09 View $1.97 $1.92 $1.84 $1.79 $1.74	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 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16G-C-QFN20R Silicon Labs 1: $2.30 93,467Expected 2027-01-08	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 2027-01-08	Cut Tape $2.30 $1.68 $1.53 $1.36 View Reel $1.13 $1.28 $1.23 $1.21 $1.13 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: $3.80 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 2026-12-04 9,000 Expected 2026-12-07 Factory Lead-Time: 31 Weeks	Cut Tape $3.80 $3.18 $2.79 $2.65 View Reel $2.17 $2.59 $2.32 $2.17 $2.17 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 eZ80AcclaimPlus! Connectivity ASSP Rev AB ZiLOG EZ80F91AZ050EK EZ80F91AZ050EK ZiLOG 1: $32.66 11In Stock 780Expected 2026-11-04 End of Life	Mfr. Part # EZ80F91AZ050EK Mouser Part # 692-EZ80F91AZ050EK End of Life	ZiLOG	8-bit Microcontrollers - MCU eZ80AcclaimPlus! Connectivity ASSP Rev AB	Datasheet	11In Stock 780Expected 2026-11-04	$32.66 $26.15 $24.26 $22.39	Min.: 1 Mult.: 1	eZ80	256 kB	8 kB		50 MHz	No ADC	32 I/O	3 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C
8-bit Microcontrollers - MCU 50MIPS,128KB,12ADC,100Pin MCU C8051F124-GQ Silicon Labs 1: $69.96 1,102Expected 2026-12-04 End of Life	Mfr. Part # C8051F124-GQ Mouser Part # 634-C8051F124-GQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 50MIPS,128KB,12ADC,100Pin MCU	Datasheet	1,102Expected 2026-12-04	$69.96 $57.80 $54.16 $52.33 Quote Quote	Min.: 1 Mult.: 1	8051	128 kB	8.25 kB	TQFP-100	50 MHz	8 bit, 12 bit	64 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F124		Tray
8-bit Microcontrollers - MCU 8051 50 MHz 8 kB 8-bit MCU C8051F353-GM Silicon Labs 1: $17.51 1,533Expected 2026-11-17 NRND	Mfr. Part # C8051F353-GM Mouser Part # 634-C8051F353-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 8 kB 8-bit MCU	Datasheet	1,533Expected 2026-11-17	$17.51 $13.71 $12.76 $11.72 View $11.61 $10.92 $10.67 Quote	Min.: 1 Mult.: 1	8051	8 kB	768 B	QFN-28	50 MHz	16 bit	17 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F353		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB22F16I-C-QFN28 Silicon Labs 1: $3.24 1In Stock	Mfr. Part # EFM8BB22F16I-C-QFN28 Mouser Part # 634-8BB22F16ICQFN28	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	1In Stock	$3.24 $2.39 $2.17 $1.94 View $1.83 $1.77 $1.71 $1.67 $1.63	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	+ 125 C	EFM8BB2		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V CAN LIN 8-bit MCU C8051F508-IM Silicon Labs 1: $19.64 370Expected 2027-04-16 End of Life	Mfr. Part # C8051F508-IM Mouser Part # 634-C8051F508-IM End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V CAN LIN 8-bit MCU Learn More about Silicon Labs silicon c8051f58x automotive industrial mcus	Datasheet	370Expected 2027-04-16	$19.64 $15.39 $14.33 $13.16 View $13.03 $12.60	Min.: 1 Mult.: 1	8051	64 kB	4.25 kB	QFN-40	50 MHz	12 bit	33 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F508	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN28 Silicon Labs 1: $3.79 526Expected 2027-01-08	Mfr. Part # EFM8UB10F16G-C-QFN28 Mouser Part # 634-8UB10F16GCQFN28	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	526Expected 2027-01-08	$3.79 $2.81 $2.56 $2.29 View $2.16 $2.09 $2.00	Min.: 1 Mult.: 1	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		Tube
8-bit Microcontrollers - MCU eZ80AcclaimPlus! Connectivity ASSP Rev AC EZ80F91AZA50EK ZiLOG 1: $32.64 1,874On Order End of Life	Mfr. Part # EZ80F91AZA50EK Mouser Part # 692-EZ80F91AZA50EK End of Life	ZiLOG	8-bit Microcontrollers - MCU eZ80AcclaimPlus! Connectivity ASSP Rev AC	Datasheet	1,874On Order On Order Ship Dates Mfr. #: EZ80F91AZA50EK Stock: 0 On Order: 914 Expected 2026-12-31 960 TBD Factory Lead-Time: 32 Weeks	$32.64 $26.05 $23.18 $22.41	Min.: 1 Mult.: 1	eZ80	256 kB	8 kB		50 MHz	No ADC	32 I/O	3 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EZ80F91
8-bit Microcontrollers - MCU 8051 50 MHz 8 kB 8-bit MCU C8051F353-GMR Silicon Labs 2,500: $10.11 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # C8051F353-GMR Mouser Part # 634-C8051F353-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 8 kB 8-bit MCU	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel $10.11	Min.: 2,500 Mult.: 2,500 : 2,500	8051	8 kB	768 B	QFN-28	50 MHz	16 bit	17 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F353		Reel
8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN20 C8051F392-A-GMR Silicon Labs 2,500: $3.17 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # C8051F392-A-GMR Mouser Part # 634-C8051F392-A-GMR	Silicon Labs	8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN20	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel $3.17	Min.: 2,500 Mult.: 2,500 : 2,500	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		Reel