8-bit Microcontrollers - MCU – Mouser Hong Kong

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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 analogue and communication peripherals into a small footprint, making them ideal for space-constrained applications. With an efficient 8051 core, 5V capable I/O, precision analogue 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	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 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU EFM8BB52F16G-C-TSSOP28 Silicon Labs Restricted Availability	Mfr. Part No. EFM8BB52F16G-C-TSSOP28 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F32I-C-QFN32R Silicon Labs Restricted Availability	Mfr. Part No. EFM8BB52F32I-C-QFN32R Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8I-C-TSSOP20 Silicon Labs Restricted Availability	Mfr. Part No. EFM8BB51F8I-C-TSSOP20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F16I-C-TSSOP28R Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 16 GPIO BB5 8-bit MCU EFM8BB52F32I-C-QFN20R Silicon Labs Restricted Availability	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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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-QFN32 Silicon Labs Restricted Availability	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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-QFN20R Silicon Labs Restricted Availability	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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB51F16G-C-TSSOP20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB51F16G-C-QFN20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB51F16G-C-QFN20R Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet	More Info Available	Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB51F16I-C-QFN20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB51F16I-C-TSSOP20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB51F8G-C-TSSOP20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F16G-C-QFN20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F16G-C-QFN32 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet	More Info Available	Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F16G-C-QFN20R Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F32I-C-QFN32 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F32I-C-TSSOP20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB51F8G-C-QFN20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet		Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F16I-C-QFN32 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet	More Info Available	Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F16G-C-TSSOP20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet	More Info Available	Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F16I-C-TSSOP20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet	More Info Available	Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F32G-C-TSSOP20 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet	More Info Available	Restricted Availability	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 Restricted Availability	Mfr. Part No. EFM8BB52F32I-C-TSSOP28 Mouser Part No 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 Mouser does not sell this product in your region.	Datasheet	More Info Available	Restricted Availability	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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