8-bit Microcontrollers - MCU

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EFM8BB51 & EFM8BB52 Busy Bee 8-Bit MCUs

Silicon Labs EFM8BB51 and EFM8BB52 Busy Bee MCUs are multi-purpose microcontrollers with a comprehensive feature set in compact packages. These devices offer high value by integrating advanced analog and communication peripherals into a small footprint, making them ideal for space-constrained applications. With an efficient 8051 core, 5V capable I/O, precision analog, and enhanced pulse-width modulation, the EFM8BB51 and EFM8BB52 MCUs are optimal for embedded applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (TWD) Filter the results in the table by unit price based on your quantity.	Qty.	Program Memory Size	Data RAM Size	Package / Case	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F32I-C-QFN32R Silicon Labs 1: NT$43.38 11,275In Stock	Mfr. Part # EFM8BB52F32I-C-QFN32R Mouser Part # 634-EFM852F32IQFN32R	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	11,275In Stock	Cut Tape NT$43.38 NT$31.19 NT$28.07 NT$24.70 Reel NT$20.43 View NT$23.09 NT$22.12 NT$21.40 NT$19.93	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 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU EFM8BB52F16G-C-TSSOP28 Silicon Labs 1: NT$43.02 8,033In Stock	Mfr. Part # EFM8BB52F16G-C-TSSOP28 Mouser Part # 634-EFM852F16GTSOP28	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	8,033In Stock	NT$43.02 NT$31.15 NT$28.21 NT$24.92 View NT$23.34 NT$22.37 NT$21.40 NT$20.79 NT$20.29	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-28		25 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8I-C-TSSOP20 Silicon Labs 1: NT$40.87 166In Stock	Mfr. Part # EFM8BB51F8I-C-TSSOP20 Mouser Part # 634-EFM851F8ICTSOP20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	166In Stock	NT$40.87 NT$29.54 NT$26.60 NT$23.41 View NT$21.87 NT$20.94 NT$20.29 NT$19.39 NT$18.89	Min.: 1 Mult.: 1	8 kB	1.28 kB	TSSOP-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 125 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU EFM8BB52F16I-C-TSSOP28R Silicon Labs 1: NT$42.66 2,435In Stock	Mfr. Part # EFM8BB52F16I-C-TSSOP28R Mouser Part # 634-EFM852F16ITOP28R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	2,435In Stock	Cut Tape NT$42.66 NT$31.15 NT$28.18 NT$24.88 Reel NT$20.79 View NT$23.34 NT$22.37 NT$21.40 NT$20.29	Min.: 1 Mult.: 1 : 2,500	16 kB	1.28 kB	TSSOP-28		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-QFN32 Silicon Labs 1: NT$34.77 1,681In Stock	Mfr. Part # EFM8BB52F32G-C-QFN32 Mouser Part # 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	1,681In Stock	NT$34.77 NT$24.81 NT$22.33 NT$19.65 View NT$18.32 NT$17.53 NT$16.99 NT$16.24 NT$15.85	Min.: 1 Mult.: 1	32 kB	2.25 kB	QFN-32		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
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: NT$42.30 Non-Stocked Lead-Time 24 Weeks	Mfr. Part # EFM8BB52F32I-C-QFN20R Mouser Part # 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 NT$42.30 NT$30.40 NT$27.35 NT$24.06 Reel NT$19.90 View NT$22.51 NT$21.55 NT$20.86 NT$19.39	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 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-QFN20R Silicon Labs 1: NT$39.79 12,398In Stock	Mfr. Part # EFM8BB51F16I-C-QFN20R Mouser Part # 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 NT$39.79 NT$33.91 NT$29.76 NT$27.32 Reel NT$19.29 View NT$25.42 NT$23.27 NT$21.29 NT$16.35	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: NT$39.79 4,000In Stock	Mfr. Part # EFM8BB52F32G-C-QFN32R Mouser Part # 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 NT$39.79 NT$28.75 NT$25.88 NT$22.76 Reel NT$18.86 View NT$21.29 NT$20.36 NT$19.72 NT$18.39	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 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-TSSOP20 Silicon Labs 1: NT$35.85 1,452In Stock	Mfr. Part # EFM8BB51F16G-C-TSSOP20 Mouser Part # 634-EFM8516GCTSSOP20	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	1,452In Stock	NT$35.85 NT$28.36 NT$27.93 NT$25.74 View NT$19.90 NT$19.39	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-QFN20 Silicon Labs 1: NT$38.72 151In Stock	Mfr. Part # EFM8BB51F16G-C-QFN20 Mouser Part # 634-EFM851F16GCQFN20	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	151In Stock	NT$38.72 NT$27.96 NT$25.17 NT$22.12 View NT$20.69 NT$19.83 NT$19.18 NT$18.32 NT$17.89	Min.: 1 Mult.: 1	16 kB	1.28 kB	QFN-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-QFN20R Silicon Labs 1: NT$33.34 1,016In Stock 7,500On Order	Mfr. Part # EFM8BB51F16G-C-QFN20R Mouser Part # 634-EFM851F16GQFN20R	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	1,016In Stock 7,500On Order	Cut Tape NT$33.34 NT$23.98 NT$21.62 NT$19.00 View Reel NT$16.99 NT$17.78 NT$17.03 NT$16.99	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 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-QFN20 Silicon Labs 1: NT$40.87 194In Stock	Mfr. Part # EFM8BB51F16I-C-QFN20 Mouser Part # 634-EFM851F16ICQFN20	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	194In Stock	NT$40.87 NT$29.54 NT$26.60 NT$23.41 View NT$21.87 NT$20.94 NT$20.29 NT$19.39 NT$18.89	Min.: 1 Mult.: 1	16 kB	1.28 kB	QFN-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-TSSOP20 Silicon Labs 1: NT$42.66 146In Stock	Mfr. Part # EFM8BB51F16I-C-TSSOP20 Mouser Part # 634-EFM851F16TSSOP20	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	146In Stock	NT$42.66 NT$31.15 NT$28.18 NT$24.88 View NT$23.34 NT$22.37 NT$21.40 NT$20.79 NT$20.29	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8G-C-TSSOP20 Silicon Labs 1: NT$39.79 297In Stock	Mfr. Part # EFM8BB51F8G-C-TSSOP20 Mouser Part # 634-EFM851F8GCTSOP20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	297In Stock	NT$39.79 NT$28.75 NT$25.88 NT$22.76 View NT$21.29 NT$20.36 NT$19.72 NT$18.86 NT$18.39	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F16G-C-QFN20 Silicon Labs 1: NT$32.98 234In Stock	Mfr. Part # EFM8BB52F16G-C-QFN20 Mouser Part # 634-EFM852F16GCQFN20	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	234In Stock	NT$32.98 NT$26.28 NT$18.71 NT$17.89 View NT$17.17 NT$16.46 NT$16.02	Min.: 1 Mult.: 1	16 kB	1.28 kB	QFN-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F16G-C-QFN32 Silicon Labs 1: NT$34.77 722In Stock 400On Order	Mfr. Part # EFM8BB52F16G-C-QFN32 Mouser Part # 634-EFM852F16GCQFN32	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	722In Stock 400On Order	NT$34.77 NT$26.67 NT$26.03 NT$23.23 View NT$21.37 NT$17.42	Min.: 1 Mult.: 1	16 kB	1.28 kB	QFN-32	12 bit	29I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F16G-C-QFN20R Silicon Labs 1: NT$34.42 874In Stock	Mfr. Part # EFM8BB52F16G-C-QFN20R Mouser Part # 634-EFM852F16GQFN20R	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	874In Stock	Cut Tape NT$34.42 NT$24.77 NT$22.30 NT$19.61 Reel NT$16.24 View NT$18.32 NT$17.53 NT$16.99 NT$15.85	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 EFM8BB52F32I-C-QFN32 Silicon Labs 1: NT$43.02 606In Stock	Mfr. Part # EFM8BB52F32I-C-QFN32 Mouser Part # 634-EFM852F32ICQFN32	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	606In Stock	NT$43.02 NT$36.57 NT$32.09 NT$28.68 View NT$26.46 NT$21.44 NT$20.47 NT$19.97	Min.: 1 Mult.: 1	16 kB	1.28 kB	QFN-32		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F32I-C-TSSOP20 Silicon Labs 1: NT$45.89 402In Stock	Mfr. Part # EFM8BB52F32I-C-TSSOP20 Mouser Part # 634-EFM852F32ICTOP20	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	402In Stock	NT$45.89 NT$35.81 NT$34.06 NT$25.74 View NT$24.59 NT$23.91 NT$23.34	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8G-C-QFN20 Silicon Labs 1: NT$35.49 294In Stock	Mfr. Part # EFM8BB51F8G-C-QFN20 Mouser Part # 634-EFM8B51F8GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	294In Stock	NT$35.49 NT$25.56 NT$23.02 NT$20.22 View NT$18.93 NT$18.10 NT$17.53 NT$16.78 NT$16.35	Min.: 1 Mult.: 1	16 kB	1.28 kB	QFN-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F16I-C-QFN32 Silicon Labs 1: NT$34.42 1,045In Stock 2,200On Order	Mfr. Part # EFM8BB52F16I-C-QFN32 Mouser Part # 634-EFMB52F16ICQFN32	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	1,045In Stock 2,200On Order	NT$34.42 NT$24.02 NT$21.55 NT$18.82 View NT$17.49 NT$17.17 NT$17.14	Min.: 1 Mult.: 1	16 kB	1.28 kB	QFN-32		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F16G-C-TSSOP20 Silicon Labs 1: NT$40.87 179Expected 10/27/2026	Mfr. Part # EFM8BB52F16G-C-TSSOP20 Mouser Part # 634-EFM852F16GCTOP20	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	179Expected 10/27/2026	NT$40.87 NT$29.54 NT$26.60 NT$23.41 View NT$21.87 NT$20.94 NT$20.29 NT$19.39 NT$18.89	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F16I-C-TSSOP20 Silicon Labs 1: NT$41.94 198Expected 1/1/2027	Mfr. Part # EFM8BB52F16I-C-TSSOP20 Mouser Part # 634-EFM852F16ITSOP20	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	198Expected 1/1/2027	NT$41.94 NT$30.36 NT$27.32 NT$24.02 View NT$22.48 NT$21.51 NT$20.83 NT$19.90 NT$19.39	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F32G-C-TSSOP20 Silicon Labs 1: NT$48.04 197Expected 12/18/2026	Mfr. Part # EFM8BB52F32G-C-TSSOP20 Mouser Part # 634-EFM852F32GCTOP20	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	197Expected 12/18/2026	NT$48.04 NT$35.03 NT$31.69 NT$28.00 View NT$26.24 NT$25.20 NT$24.06 NT$23.37 NT$22.84	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-20		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU EFM8BB52F32I-C-TSSOP28 Silicon Labs 1: NT$50.55 199Expected 12/4/2026	Mfr. Part # EFM8BB52F32I-C-TSSOP28 Mouser Part # 634-EFM852F32ICTOP28	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	199Expected 12/4/2026	NT$50.55 NT$39.44 NT$34.99 NT$31.44 View NT$30.40 NT$28.46 NT$27.82 NT$27.43 NT$27.10	Min.: 1 Mult.: 1	16 kB	1.28 kB	TSSOP-28		16 I/O	1.8 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Cut Tape

EFM8BB51 & EFM8BB52 Busy Bee 8-Bit MCUs

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EFM8BB51 & EFM8BB52 Busy Bee 8-Bit MCUs

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