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8051 microcontroller Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Core	Program Memory Size	Data Bus Width	ADC Resolution	Maximum Clock Frequency	Number of I/Os	Data RAM Size	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8G-A-QFN20R Silicon Labs 1: $1.25 11,606In Stock 73,500On Order	Mfr. Part No. EFM8BB10F8G-A-QFN20R Mouser Part No 634-8BB10F8GAQF20R	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	11,606In Stock 73,500On Order On Order Ship Dates Mfr. No: EFM8BB10F8G-A-QFN20R Stock: 11,606 Can Dispatch Immediately On Order: 52,500 Expected 13/10/2026 21,000 Expected 21/10/2026 Factory Lead Time: 12 Weeks	Cut Tape $1.25 $1.06 $0.87 $0.813 View Reel $0.68 $0.718 $0.698 $0.68 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-20	CIP-51 8051	8 kB	8 bit	12 bit	25 MHz	16 I/O	512 B	2.2 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V AT89C4051-24PU Microchip Technology 1: $2.88 942In Stock 1,404Expected 7/10/2026	Mfr. Part No. AT89C4051-24PU Mouser Part No 556-A89C4051-24PU	Microchip Technology	8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V	Datasheet	942In Stock 1,404Expected 7/10/2026	$2.88 $2.64 $2.39	Min.: 1 Mult.: 1	Through Hole	PDIP-20	8051	4 kB	8 bit	No ADC	24 MHz	15 I/O	128 B	4 V	6 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F16I-A-SOIC16 Silicon Labs 1: $1.60 959In Stock	Mfr. Part No. EFM8BB50F16I-A-SOIC16 Mouser Part No 634-M8BB50F16IASIC16	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	959In Stock	$1.60 $1.24 $1.11 $0.994 View $0.93 $0.891 $0.862 $0.823 $0.802	Min.: 1 Mult.: 1	SMD/SMT	SOIC-16		16 kB	8 bit	12 bit	50 MHz	12 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 125 C	Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F4I-A-SOIC16 Silicon Labs 1: $1.33 648In Stock	Mfr. Part No. EFM8BB50F4I-A-SOIC16 Mouser Part No 634-M8BB50F4IASOIC16	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	648In Stock	$1.33 $1.03 $0.913 $0.821 View $0.764 $0.73 $0.702 $0.67 $0.653	Min.: 1 Mult.: 1	SMD/SMT	SOIC-16		4 kB	8 bit	12 bit	50 MHz	12 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 125 C	Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F8G-A-SOIC16 Silicon Labs 1: $1.43 995In Stock	Mfr. Part No. EFM8BB50F8G-A-SOIC16 Mouser Part No 634-M8BB50F8GASOIC16	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	995In Stock	$1.43 $1.11 $0.987 $0.884 View $0.827 $0.792 $0.767 $0.732 $0.713	Min.: 1 Mult.: 1	SMD/SMT	SOIC-16		8 kB	8 bit	12 bit	50 MHz	12 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3245LTI-163 Infineon Technologies 1: $13.26 533In Stock	Mfr. Part No. CY8C3245LTI-163 Mouser Part No 727-CY8C3245LTI-163	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	533In Stock	$13.26 $10.32 $9.14 $8.77 View $8.36 $7.82 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-68	8051	32 kB	8 bit	12 bit	50 MHz	46 I/O	4 kB	1.71 V	5.5 V	- 40 C	+ 85 C	Tray
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: $1.43 5,000In 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	5,000In Stock	Cut Tape $1.43 $1.11 $0.987 $0.902 View Reel $0.684 $0.874 $0.806 $0.684	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-32		16 kB				16 I/O	1.28 kB	1.8 V	5.5 V	- 40 C	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-QFN24R Silicon Labs 1: $2.38 3,031In Stock	Mfr. Part No. EFM8SB10F8G-A-QFN24R Mouser Part No 634-8SB10F8GAQF24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU	Datasheet	3,031In Stock	Cut Tape $2.38 $1.88 $1.67 $1.52 Reel $1.27 View $1.47 $1.37 $1.32 $1.26 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT		CIP-51 8051	8 kB	8 bit	12 bit	25 MHz	17 I/O	512 B	1.8 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F64G-B-QFN32 Silicon Labs 1: $6.12 1,101In 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	1,101In Stock	$6.12 $4.05 $3.43 $3.14 View $2.99 $2.68 $2.64 $2.41 $2.39	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	CIP-51 8051	64 kB	8 bit	10 bit	25 MHz	24 I/O	4.25 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU EFM8BB50F16G-A-QFN12 Silicon Labs 1: $1.24 1,205In Stock	Mfr. Part No. EFM8BB50F16G-A-QFN12 Mouser Part No 634-M8BB50F16GAQFN12	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	1,205In Stock	$1.24 $0.979 $0.876 $0.782 View $0.736 $0.703 $0.676 $0.647 $0.63	Min.: 1 Mult.: 1	SMD/SMT	QFN-12		16 kB	8 bit	12 bit	50 MHz	9 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU AT89LP52-20JU Microchip Technology 1: $4.69 135In Stock	Mfr. Part No. AT89LP52-20JU Mouser Part No 556-AT89LP52-20JU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU Learn More about Microchip Technology atmelat89lp52	Datasheet	135In Stock	$4.69 $4.30 $4.24	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	8 kB	8 bit	No ADC	20 MHz	36 I/O	256 B	2.4 V	5.5 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F2G-A-QFN20R Silicon Labs 1: $1.85 3,532In Stock 16,500Expected 30/10/2026	Mfr. Part No. EFM8SB10F2G-A-QFN20R Mouser Part No 634-8SB10F2GAQF20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU	Datasheet	3,532In Stock 16,500Expected 30/10/2026	Cut Tape $1.85 $1.55 $1.33 $1.25 Reel $0.90 View $1.24 $1.10 $1.00 $0.866 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-20	CIP-51 8051	2 kB	8 bit	12 bit	25 MHz	16 I/O	256 B	1.8 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC AT89S2051-24SU Microchip Technology 1: $3.55 504In Stock	Mfr. Part No. AT89S2051-24SU Mouser Part No 556-A89S2051-24SU	Microchip Technology	8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC	Datasheet	504In Stock	$3.55 $3.25 $2.96	Min.: 1 Mult.: 1	SMD/SMT	SOIC-20	8051	2 kB	8 bit	No ADC	24 MHz	15 I/O	256 B	2.7 V	5.5 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F16G-A-SOIC16 Silicon Labs 1: $1.63 1,544In Stock	Mfr. Part No. EFM8BB50F16G-A-SOIC16 Mouser Part No 634-M8BB50F16GASIC16	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	1,544In Stock	$1.63 $1.40 $1.23 $1.13 View $0.994 $0.941 $0.792 $0.721 $0.699	Min.: 1 Mult.: 1	SMD/SMT	SOIC-16		16 kB	8 bit	12 bit	50 MHz	12 I/O	512 B	1.8 V	5.5 V	- 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: $2.30 2,908In Stock 4,500Expected 27/11/2026	Mfr. Part No. EFM8SB10F8G-A-QFN20R Mouser Part No 634-8SB10F8GAQF20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU	Datasheet	2,908In Stock 4,500Expected 27/11/2026	Cut Tape $2.30 $1.78 $1.58 $1.44 Reel $1.23 View $1.39 $1.28 $1.23 $1.21 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-20	CIP-51 8051	8 kB	8 bit	12 bit	25 MHz	16 I/O	512 B	1.8 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F16G-A-QFN16 Silicon Labs 1: $1.37 973In Stock	Mfr. Part No. EFM8BB50F16G-A-QFN16 Mouser Part No 634-M8BB50F16GAQFN16	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	973In Stock	$1.37 $1.05 $0.94 $0.821 View $0.763 $0.729 $0.70 $0.67 $0.653	Min.: 1 Mult.: 1	SMD/SMT	QFN-16		16 kB	8 bit	12 bit	50 MHz	12 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU EFM8BB50F4G-A-QFN12 Silicon Labs 1: $1.02 706In Stock	Mfr. Part No. EFM8BB50F4G-A-QFN12 Mouser Part No 634-M8BB50F4GAQFN12	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	706In Stock	$1.02 $0.789 $0.73 $0.672 View $0.532 $0.509 $0.495	Min.: 1 Mult.: 1	SMD/SMT	QFN-12		4 kB	8 bit	12 bit	50 MHz	9 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F8G-C-QFN20 Silicon Labs 1: $2.42 7,587In Stock	Mfr. Part No. EFM8UB10F8G-C-QFN20 Mouser Part No 634-8UB10F8GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	7,587In Stock	$2.42 $2.05 $1.80 $1.67 View $1.63 $1.44 $1.34 $1.29 $1.27	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	8 kB	8 bit	12 bit	50 MHz	13 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 85 C	Tube
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: $2.53 4,082In Stock	Mfr. Part No. EFM8BB31F16G-D-QFN32R Mouser Part No 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	4,082In Stock	Cut Tape $2.53 $2.09 $1.81 $1.70 Reel $1.29 View $1.50 $1.40 $1.25 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-32	CIP-51 8051	16 kB	8 bit	10 bit, 12 bit	50 MHz	29 I/O	2.3 kB	2.2 V	3.6 V	- 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-QFN24R Silicon Labs 1: $4.99 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 $4.99 $3.37 $3.13 $2.72 Reel $2.11 View $2.54 $2.23 $2.11 $1.80 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-24	CIP-51 8051	64 kB	8 bit	10 bit, 12 bit	50 MHz	20 I/O	4.35 kB	2.2 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3445PVI-094 Infineon Technologies 1: $16.78 134In Stock	Mfr. Part No. CY8C3445PVI-094 Mouser Part No 727-CY8C3445PVI-094	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	134In Stock	$16.78 $14.99 $11.59 $11.45 View $11.00 $10.21 $9.96 Quote	Min.: 1 Mult.: 1	SMD/SMT	SSOP-48	8051	32 kB	8 bit	12 bit	50 MHz	29 I/O	4 kB	1.71 V	5.5 V	- 40 C	+ 85 C	Tube
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: $4.53 1,210In Stock	Mfr. Part No. EFM8BB31F32I-D-4QFN24R Mouser Part No 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	1,210In Stock	Cut Tape $4.53 $2.98 $2.75 $2.39 Reel $1.85 View $2.24 $1.96 $1.85 $1.59	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-24	CIP-51 8051	32 kB	8 bit	10 bit, 12 bit	50 MHz	20 I/O	2.3 kB	2.2 V	3.6 V	- 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: $5.92 1,519In 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	1,519In Stock	$5.92 $3.92 $3.56 $3.03 View $2.88 $2.58 $2.24 $2.22	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	CIP-51 8051	64 kB	8 bit	10 bit, 12 bit	50 MHz	29 I/O	4.35 kB	2.2 V	3.6 V	- 40 C	+ 125 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: $3.88 995In Stock 1,500Expected 30/11/2026	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	995In Stock 1,500Expected 30/11/2026	Cut Tape $3.88 $2.88 $2.64 $2.37 Reel $2.14 View $2.24 $2.19 $2.12 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-24	CIP-51 8051	64 kB	8 bit	10 bit, 12 bit	50 MHz	20 I/O	4.35 kB	2.2 V	3.6 V	- 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 EFM8BB31F64G-D-QFN24 Silicon Labs 1: $3.44 5,987In 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	5,987In Stock	$3.44 $2.90 $2.53 $2.37 View $2.12 $1.97 $1.82 $1.75	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	CIP-51 8051	64 kB	8 bit	10 bit, 12 bit	50 MHz	20 I/O	4.35 kB	2.2 V	3.6 V	- 40 C	+ 85 C	Tube