.hide-partial { max-height: none; } .show-more { display: none; }

8051 microcontroller Embedded Processors & Controllers

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Embedded Processors & Controllers

List Images

Results: 576

Applied Filters:

Manufacturer

Product Type

Mounting Style

Package/Case

Core

Data Bus Width

Maximum Clock Frequency

Program Memory Size

Data RAM Size

ADC Resolution

Number of I/Os

Minimum Operating Temperature

Maximum Operating Temperature

Qualification

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Mounting Style	Package/Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
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 3,518In 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	3,518In Stock 16,500Expected 30/10/2026	Cut Tape $1.85 $1.43 $1.26 $1.15 Reel $1.04 View $1.12 $1.04 $0.917 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-20	CIP-51 8051	8 bit	25 MHz	2 kB	256 B	12 bit	16 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
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: $1.39 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	$1.39 $1.00 $0.90 $0.792 View $0.74 $0.709 $0.685 $0.656 $0.639	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	SOIC-16		8 bit	50 MHz	4 kB	512 B	12 bit	12 I/O	- 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	8-bit Microcontrollers - MCU	SMD/SMT	SOIC-16		8 bit	50 MHz	8 kB	512 B	12 bit	12 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL AT89LP51-20AU Microchip Technology 1: $2.34 130In Stock 480Expected 4/11/2026	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 4/11/2026	$2.34 $2.12 $1.93	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	TQFP-44	8051	8 bit	20 MHz	4 kB	256 B	No ADC	36 I/O	- 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: $1.51 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 $1.51 $1.09 $0.982 $0.864 Reel $0.715 View $0.808 $0.772 $0.748 $0.698	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-32				16 kB	1.28 kB		16 I/O	- 40 C	+ 85 C	Reel, Cut Tape
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	8-bit Microcontrollers - MCU	SMD/SMT	TQFP-100	8051	8 bit	67 MHz	64 kB	8 kB	20 bit	72 I/O	- 40 C	+ 85 C	Tray
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	8-bit Microcontrollers - MCU	SMD/SMT	QFN-12		8 bit	50 MHz	4 kB	512 B	12 bit	9 I/O	- 40 C	+ 85 C	Cut Tape
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	8-bit Microcontrollers - MCU	SMD/SMT	QFN-68	8051	8 bit	50 MHz	32 kB	4 kB	12 bit	46 I/O	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU EFM8BB10F2G-A-QFN20R Silicon Labs 1: $1.17 15,521In Stock	Mfr. Part No. EFM8BB10F2G-A-QFN20R Mouser Part No 634-8BB10F2GAQF20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	15,521In Stock	Cut Tape $1.17 $0.90 $0.804 $0.733 Reel $0.605 View $0.709 $0.653 $0.619 $0.597 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-20	CIP-51 8051	8 bit	25 MHz	2 kB	256 B	12 bit	16 I/O	- 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 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-24	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	20 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
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: $4.12 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 $4.12 $3.07 $2.80 $2.52 Reel $2.14 View $2.38 $2.33 $2.20 $2.09 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-24	CIP-51 8051	8 bit	72 MHz	32 kB	2.25 kB	10 bit/12 bit/14 bit	20 I/O	- 40 C	+ 105 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	8-bit Microcontrollers - MCU	SMD/SMT	QFN-24	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	20 I/O	- 40 C	+ 85 C	Tube
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: $1.51 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 $1.51 $1.29 $1.13 $1.04 Reel $0.732 View $0.964 $0.883 $0.808 $0.62	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-20				16 kB	1.28 kB		16 I/O	- 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-QFN32R Silicon Labs 1: $3.63 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 $3.63 $2.69 $2.46 $2.20 Reel $1.89 View $2.08 $2.01 $1.93 $1.84	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	29 I/O	- 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-QFN32 Silicon Labs 1: $3.79 3,323In Stock 4,900Expected 27/10/2026	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	3,323In Stock 4,900Expected 27/10/2026	$3.79 $2.99 $2.68 $2.46 View $2.31 $2.08	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	29 I/O	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V AT89C4051-24SU Microchip Technology 1: $2.03 515In Stock	Mfr. Part No. AT89C4051-24SU Mouser Part No 556-A89C4051-24SU	Microchip Technology	8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V	Datasheet	515In Stock	$2.03 $1.86 $1.66	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	SOIC-20	8051	8 bit	24 MHz	4 kB	128 B	No ADC	15 I/O	- 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: $1.35 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	$1.35 $0.97 $0.873 $0.767 View $0.718 $0.687 $0.665 $0.636 $0.62	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	QFN-12		8 bit	50 MHz	16 kB	512 B	12 bit	9 I/O	- 40 C	+ 85 C	Cut Tape
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: $4.81 3,892In 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	3,892In Stock	Cut Tape $4.81 $3.74 $3.33 $3.06 View Reel $2.42 $2.98 $2.86 $2.42	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-32	CIP-51 8051	8 bit	72 MHz	64 kB	4.25 kB	10 bit/12 bit/14 bit	29 I/O	- 40 C	+ 105 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F16G-A-QFN16R Silicon Labs 1: $1.39 1,000In Stock	Mfr. Part No. EFM8BB50F16G-A-QFN16R Mouser Part No 634-M8BB50F16GAFN16R	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	1,000In Stock	Cut Tape $1.39 $1.00 $0.90 $0.792 Reel $0.656 View $0.74 $0.709 $0.685 $0.639 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	8-bit Microcontrollers - MCU	SMD/SMT	QFN-16		8 bit	50 MHz	16 kB	512 B	12 bit	12 I/O	- 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-QFN32R Silicon Labs 1: $2.53 1,582In 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	1,582In 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	8-bit Microcontrollers - MCU	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	10 bit, 12 bit	29 I/O	- 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: $1.39 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	$1.39 $1.00 $0.90 $0.792 View $0.74 $0.709 $0.685 $0.656 $0.639	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	QFN-16		8 bit	50 MHz	16 kB	512 B	12 bit	12 I/O	- 40 C	+ 85 C	Cut Tape
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: $4.16 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 $4.16 $3.10 $2.83 $2.54 Reel $2.16 View $2.39 $2.34 $2.23 $2.12	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	29 I/O	- 40 C	+ 125 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246AXI-131 Infineon Technologies 1: $20.13 666In Stock	Mfr. Part No. CY8C3246AXI-131 Mouser Part No 727-CY8C3246AXI-131	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	666In Stock	$20.13 $15.63 $13.72 $13.27 View $12.70 $12.55 Quote	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	TQFP-100	8051	8 bit	50 MHz	64 kB	8 kB	12 bit	70 I/O	- 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: $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 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	QFN-24	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	20 I/O	- 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-QFN32 Silicon Labs 1: $4.18 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	$4.18 $3.11 $2.84 $2.56 View $2.41 $2.35 $2.24 $2.16 $2.12	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	29 I/O	- 40 C	+ 125 C	Tray