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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	Qualification	Packaging
8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB20F32G-B-QFN32 Silicon Labs 1: $4.34 587In Stock	Mfr. Part No. EFM8UB20F32G-B-QFN32 Mouser Part No 634-EFM8UBF32GBQFN32	Silicon Labs	8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	587In Stock	$4.34 $3.30 $3.02 $2.71 View $2.56 $2.50 $2.42 $2.39	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	CIP-51 8051	32 kB	8 bit	10 bit	48 MHz	25 I/O	2.25 kB	3.3 V	3.3 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 EFM8SB10F8A-A-QFN20R Silicon Labs 1: $4.43 1,221In Stock End of Life	Mfr. Part No. EFM8SB10F8A-A-QFN20R Mouser Part No 634-M8SB10F8AAQFN20R End of Life	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	1,221In Stock	Cut Tape $4.43 $3.30 $3.02 $2.71 View Reel $2.04 $2.56 $2.50 $2.33 $2.04	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	AEC-Q100	Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F64G-B-QFN24R Silicon Labs 1: $3.92 1,500In Stock	Mfr. Part No. EFM8SB20F64G-B-QFN24R Mouser Part No 634-EFM8SB64GBQFN24R	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	1,500In Stock	Cut Tape $3.92 $2.92 $2.67 $2.39 View Reel $1.80 $2.26 $2.22 $2.09 $1.80 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT		CIP-51 8051	64 kB	8 bit	10 bit	25 MHz	16 I/O	4.25 kB	1.8 V	3.6 V	- 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 EFM8BB31F16I-D-QFP32 Silicon Labs 1: $3.14 16In Stock	Mfr. Part No. EFM8BB31F16I-D-QFP32 Mouser Part No 634-EF8BB31F16IDQP32	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	16In Stock	$3.14 $2.33 $2.12 $1.89 View $1.80 $1.74 $1.71 $1.69	Min.: 1 Mult.: 1	SMD/SMT	QFP-32	CIP-51 8051	16 kB	8 bit	10 bit, 12 bit	50 MHz	28 I/O	2.3 kB	2.2 V	3.6 V	- 40 C	+ 125 C		Tray
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F64E-C-QSOP24 Silicon Labs 1: $4.83 1,905In Stock End of Life	Mfr. Part No. EFM8LB12F64E-C-QSOP24 Mouser Part No 634-LB12F64ECQSOP24 End of Life	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	1,905In Stock	$4.83 $3.60 $3.29 $2.95 View $2.80 $2.75 $2.58 $2.50 $2.46	Min.: 1 Mult.: 1	SMD/SMT	QSOP-24	CIP-51 8051	64 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	21 I/O	4.25 kB	2.2 V	3.6 V	- 40 C	+ 105 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32G-D-QFN32 Silicon Labs 1: $2.99 457In Stock	Mfr. Part No. EFM8BB31F32G-D-QFN32 Mouser Part No 634-EF8BB31F32GDQN32	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	457In Stock	$2.99 $2.20 $2.01 $1.80 View $1.69 $1.63 $1.62 $1.58	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	CIP-51 8051	32 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		Tray
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU EFM8LB10F16E-C-QFN32 Silicon Labs 1: $3.03 605In Stock	Mfr. Part No. EFM8LB10F16E-C-QFN32 Mouser Part No 634-LB10F16ECQFN32	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	605In Stock	$3.03 $2.23 $2.04 $1.82 View $1.71 $1.65 $1.63 $1.60 $1.58	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	CIP-51 8051	16 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	29 I/O	1.25 kB	2.2 V	3.6 V	- 40 C	+ 105 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-QFN32 Silicon Labs 1: $2.41 1,683In Stock	Mfr. Part No. EFM8BB52F32G-C-QFN32 Mouser Part No 634-EFM852F32GCQFN32	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	1,683In Stock	$2.41 $1.54 $1.37 $1.20 View $1.02 $0.819 $0.794	Min.: 1 Mult.: 1	SMD/SMT	QFN-32		32 kB				16 I/O	2.25 kB	1.8 V	5.5 V	- 40 C	+ 85 C		Cut Tape
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: $2.91 92In Stock	Mfr. Part No. EFM8LB10F16E-C-QFN24 Mouser Part No 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	92In Stock	$2.91 $2.15 $1.96 $1.75 View $1.65 $1.59 $1.55 $1.52	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	CIP-51 8051	16 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	20 I/O	1.25 kB	2.2 V	3.6 V	- 40 C	+ 105 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32G-D-QFP32R Silicon Labs 1: $3.40 502In Stock	Mfr. Part No. EFM8BB31F32G-D-QFP32R Mouser Part No 634-EF8BB31F32GDP32R	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	502In Stock	Cut Tape $3.40 $2.53 $2.31 $2.15 Reel $1.81	Min.: 1 Mult.: 1 : 500	SMD/SMT	QFP-32	CIP-51 8051	32 kB	8 bit	10 bit, 12 bit	50 MHz	28 I/O	2.3 kB	2.2 V	3.6 V	- 40 C	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU EFM8LB11F32E-C-QFN24 Silicon Labs 1: $3.63 813In Stock	Mfr. Part No. EFM8LB11F32E-C-QFN24 Mouser Part No 634-LB11F32ECQFN24	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	813In Stock	$3.63 $2.69 $2.46 $2.20 View $2.08 $2.01 $1.94 $1.65	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	CIP-51 8051	32 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	20 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 105 C		Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F32I-C-QFN20R Silicon Labs 1: $1.40 Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB52F32I-C-QFN20R Mouser Part No 634-EFM852F32IQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Cut Tape $1.40 $1.00 $0.902 $0.793 Reel $0.656 View $0.741 $0.71 $0.687 $0.639	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20		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 Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL AT89LP3240-20MU Microchip Technology 1: $6.46 315In Stock	Mfr. Part No. AT89LP3240-20MU Mouser Part No 556-AT89LP3240-20MU	Microchip Technology	8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL	Datasheet	315In Stock	$6.46 $5.94 $5.39	Min.: 1 Mult.: 1	SMD/SMT	VQFN-44	8051	32 kB	8 bit	10 bit	20 MHz	38 I/O	4.25 kB	2.4 V	3.6 V	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3446LTI-073 Infineon Technologies 1: $19.73 2,600In Stock	Mfr. Part No. CY8C3446LTI-073 Mouser Part No 727-CY8C3446LTI-073	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	2,600In Stock	$19.73 $16.09 $14.38 $13.83 View $13.25 $12.74 $12.47 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-48	8051	64 kB	8 bit	12 bit	50 MHz	31 I/O	8 kB	1.71 V	5.5 V	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU AT89LP52-20AU Microchip Technology 1: $2.34 2,784In Stock	Mfr. Part No. AT89LP52-20AU Mouser Part No 556-AT89LP52-20AU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU Learn More about Microchip Technology atmelat89lp52	Datasheet	2,784In Stock	$2.34 $2.12 $1.93	Min.: 1 Mult.: 1	SMD/SMT	TQFP-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		Tray
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V AT89C51RC-24PU Microchip Technology 1: $7.03 396In Stock 690Expected 1/10/2026	Mfr. Part No. AT89C51RC-24PU Mouser Part No 556-A89C51RC-24PU	Microchip Technology	8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	396In Stock 690Expected 1/10/2026	$7.03 $6.46 $6.36	Min.: 1 Mult.: 1	Through Hole	PDIP-40	8051	32 kB	8 bit	No ADC	24 MHz	32 I/O	512 B	4 V	5.5 V	- 40 C	+ 85 C		Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU EFM8BB50F8G-A-QFN12 Silicon Labs 1: $2.37 10,835In Stock	Mfr. Part No. EFM8BB50F8G-A-QFN12 Mouser Part No 634-M8BB50F8GAQFN12	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	10,835In Stock	$2.37 $1.44 $1.21 $0.877 View $0.792 $0.745 $0.734	Min.: 1 Mult.: 1	SMD/SMT	QFN-12		8 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 8bit 67MHz 64KB CY8C3866AXI-040T Infineon Technologies 1: $36.60 559In Stock	Mfr. Part No. CY8C3866AXI-040T Mouser Part No 727-CY8C3866AXI-040T	Infineon Technologies	8-bit Microcontrollers - MCU 8051 8bit 67MHz 64KB Learn More about Infineon Technologies cypress psoc	Datasheet	559In Stock	Cut Tape $36.60 $29.38 $26.53 $25.55 View Reel $23.24 $25.06 $24.45 $23.45 $23.24 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	TQFP-100	8051	64 kB	8 bit	20 bit	67 MHz	72 I/O	8 kB	1.71 V	1.89 V	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
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 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V AT89C4051-24PU Microchip Technology 1: $2.88 944In 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	944In 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 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246PVI-147 Infineon Technologies 1: $16.31 371In Stock	Mfr. Part No. CY8C3246PVI-147 Mouser Part No 727-CY8C3246PVI-147	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	371In Stock	$16.31 $15.37 $11.23 $10.81 View $10.17 $9.86 Quote	Min.: 1 Mult.: 1	SMD/SMT	SSOP-48	8051	64 kB	8 bit	12 bit	50 MHz	31 I/O	8 kB	1.71 V	5.5 V	- 40 C	+ 85 C		Tube
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V CY8C3866AXI-040 Infineon Technologies 1: $36.60 297In Stock	Mfr. Part No. CY8C3866AXI-040 Mouser Part No 727-CY8C3866AXI-040	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	297In Stock	$36.60 $29.38 $25.77 $25.02 View $24.78 $23.92 Quote	Min.: 1 Mult.: 1	SMD/SMT	TQFP-100	8051	64 kB	8 bit	20 bit	67 MHz	72 I/O	8 kB	1.71 V	1.89 V	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V CY8C3866PVI-070 Infineon Technologies 1: $30.08 237In Stock	Mfr. Part No. CY8C3866PVI-070 Mouser Part No 727-CY8C3866PVI-070	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	237In Stock	$30.08 $28.48 $21.39 $20.69 View $20.67 $19.57 Quote	Min.: 1 Mult.: 1	SMD/SMT	SSOP-48	8051	64 kB	8 bit	20 bit	67 MHz	29 I/O	8 kB	1.71 V	1.89 V	- 40 C	+ 85 C		Tube
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3245LTI-139 Infineon Technologies 1: $13.11 449In Stock	Mfr. Part No. CY8C3245LTI-139 Mouser Part No 727-CY8C3245LTI-139	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	449In Stock	$13.11 $10.20 $9.03 $8.66 View $8.27 $8.04 $7.72 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-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		Tray
8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL AT89LP51-20AU Microchip Technology 1: $2.34 130In Stock 480Expected 23/10/2026	Mfr. Part No. AT89LP51-20AU Mouser Part No 556-AT89LP51-20AU	Microchip Technology	8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL Learn More about Microchip Technology atmelat89lp52	Datasheet	130In Stock 480Expected 23/10/2026	$2.34 $2.12 $1.93	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	4 kB	8 bit	No ADC	20 MHz	36 I/O	256 B	2.4 V	5.5 V	- 40 C	+ 85 C		Tray