8-bit Microcontrollers
As an industry leader in delivering the fastest speeds and lowest power, let us help solve your mixed-signal and low-latency embedded challenges. Our innovative, 8-bit microcontrollers (MCUs) are ideal for a broad range of IoT applications and beyond.
Introducing the EFM8BB5
Silicon Labs has announced the newest addition to the 8-bit portfolio, the EFM8BB5, which empowers developers with a versatile, highly integrated platform, ideal for transitioning from older 8-bit offerings. With compact package options as small as 2 mm x 2 mm and competitive pricing to cater to even the most budget-conscious designers, the BB5 family excels both as a means to augment existing products with simple functionality and as the primary MCU.
EFM8 BB5 General Purpose Microcontroller
EFM8 BB5 General Purpose Microcontroller
The EFM8BB5, part of the wide supply voltage EFM8 family of MCUs, is a multi-purpose line of 8-bit microcontrollers with a comprehensive feature set in small packages. These devices offer advanced analog and communication peripherals in small packages, making them ideal for space-constrained applications. The pipelined 8051 core gives users a proven, high-performance 8-bit platform that is flexible enough to be used in a wide variety of applications. The BB50, BB51, and BB52 families of devices provide a flexible platform for even the most cost-conscious applications without the overhead of a 32-bit platform.
EFM8 Cheapest General Purpose Microcontroller
EFM8 Cheapest General Purpose Microcontroller
The Busy Bee family of EFM8 microcontrollers (MCUs) includes general purpose MCUs. These MCUs offer high-value by integrating advanced analog and communication peripherals into small packages, making them ideal for low-latency, BOM and space-constrained embedded applications.
EFM8 8-bit Optical Module Microcontroller
EFM8 8-bit Optical Module Microcontroller
The Laser Bee family of EFM8 microcontrollers (MCUs) includes analog intensive MCUs that operate at up to 72 MHz. These MCUs offer high performance analog including 14-bit ADC, 12-bit DAC, ±3 °C temperature sensor and high speed communication peripherals in packages as small as 3 mm x 3 mm, making them ideal for applications that require performance analog.
| Frequency | Flash (kB) | RAM (kB) | GPIO | ADC 1 | ADC 2 | DAC | ACMP | USB | SPI | UART | I2C | Packages | Timers | Vdd (Min) | Vdd (Max) | PWM/PCA Ch. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
EFM8 BB5
EFM8 BB5 8-bit Microcontrollers (MCUs)
|
50 | 4, 8, 16, 32 | 0.5, 1.28, 2.30 | 9, 12, 16, 25, 29 | 12-bit, 12-ch., 12-bit, 16-ch, 12-bit, 16-ch., 12-bit, 5-ch., 12-bit, 8-ch. | — | -, 10-bit, 1-ch, 10-bit, 1-ch. | 0, 2 | 1 | 1, 2 | 1,2 | QFN12, QFN16, QFN20, QFN32, SOIC16, TSSOP20, TSSOP28 | 4 | 1.8 | 5.5 | 3 | |
|
EFM8 Busy Bee
EFM8 Busy Bee 8-bit Microcontrollers (MCUs)
|
25, 50 | 2, 4, 8, 16, 32, 64 | 0.25, 0.5, 2.25, 4.25 | 13, 16, 20, 22, 28, 29 | 12-bit, 12-ch., 12-bit, 15-ch., 12-bit, 20-ch. | — | 12-bit, 2-ch., 12-bit, 4-ch., — | 2 | 1 | 1, 2 | 1 1 | QFN20, QFN24, QFN28, QFN32, QFP32, SOIC16 | 4, 5, 6 | 2.2 | 3.6 | 3, 6 | |
|
EFM8 Laser Bee
EFM8 Analog Intensive Laser Bee 8-bit Microcontrollers (MCUs)
|
72 | 16, 32, 64 | 1.25, 2.25, 4.25 | 20, 28, 29 | 14-bit, 12-ch., 14-bit, 20-ch. | — | 12-bit, 2-ch., 12-bit, 4-ch., — | 2 | 1 | 2 | 1 1 | QFN24, QFN32, QFP32 | 6 | 2.2 | 3.6 | 6 | |
|
EFM8 Sleepy Bee
EFM8 Ultra Low Power Sleepy Bee 8-bit Microcontrollers (MCUs)
|
25 | 2, 4, 8, 16, 32, 64 | 0.25, 0.5, 4 | 13, 16, 17, 24 | 10-bit, 15-ch., 10-bit, 23-ch., 12-bit, 10-ch., 12-bit, 9-ch. | — | — | 1, 2 | 1, 2 | 1 | 1 | CSP16, QFN20, QFN24, QFN32, QFP32 | 4 | 1.8 | 3.6 | 3, 6 | |
|
EFM8 Universal Bee
EFM8 USB Capable Universal Bee 8-bit Microcontrollers (MCUs)
|
48 | 8, 16, 32, 64 | 2, 4 | 13, 22, 25, 40 | 10-bit, 20-ch., 10-bit, 32-ch., 12-bit, 11-ch., 12-bit, 20-ch. | — | — | 2 | 1 | 2 | 2 1 | QFN20, QFN28, QFN32, QFP32, QFP48 | 5, 6 | 2.2, 2.7 | 3.8, 5.25 | 3, 5 | |
|
C8051F02x
C8051F02x Analog-Intensive MCUs
|
25 | 64 | 4.25 | 32, 64 | 10-bit, 8-ch., 100 ksps, 12-bit, 8-ch., 100 ksps | 8-bit, 8-ch., 500 ksps | 12-bit, 2-ch. | 2 | 1 | 2 | 1 | QFP100, QFP64 | 5 | 2.7 | 3.6 | 5 | |
|
C8051F04x
C8051F04x Analog-Intensive MCUs
|
25 | 32, 64 | 4.25 | 32, 64 | 10-bit, 13-ch., 100 ksps, 12-bit, 13-ch., 100 ksps | 8-bit, 8-ch., 500 ksps, — | 12-bit, 2-ch., — | 3 | 1 | 2 | 1 | QFP100, QFP64 | 5 | 2.7 | 3.6 | 6 | |
|
C8051F06x
C8051F06x Analog-Intensive MCUs
|
25 | 32, 64 | 4.25 | 24, 59 | 16-bit, 1-ch., 1 Msps | 16-bit, 1-ch., 1 Msps | 12-bit, 2-ch., — | 3 | 1 | 2 | 1 | QFP100, QFP64 | 5 | 2.7 | 3.6 | 6 | |
|
C8051F12x/13x
C8051F12x/13x Analog-Intensive MCUs
|
50, 100 | 64, 128 | 8 | 32, 64 | 10-bit, 8-ch., 100 ksps, 12-bit, 8-ch., 100 ksps | 8-bit, 8-ch., 500 ksps, — | 12-bit, 2-ch., — | 2 | 1 | 2 | 1 | QFP100, QFP64 | 5 | 2.7 | 3.6 | 6 | |
|
C8051F30x
C8051F30x Small Form Factor Microcontrollers
|
25 | 2, 4, 8 | 0.25 | 8 | 8-bit, 8-ch., 500 ksps, — | — | — | 1 | 0 | 1 | 1 | QFN11 | 3 | 2.7 | 3.6 | 3 | |
|
C8051F31x
C8051F31x Small Form Factor Microcontrollers
|
25 | 8, 16 | 1.25 | 21, 25, 29 | 10-bit, 13-ch.,200 ksps, 10-bit, 17-ch., 200 ksps, 10-bit, 21-ch., 200 ksps, — | — | — | 2 | 1 | 1 | 1 | QFN24, QFN28, QFP32 | 4 | 2.7 | 3.6 | 5 | |
|
C8051F32x/34x
C8051F32x/34x USB Microcontrollers
|
25, 50 | 16, 32, 64 | 1.5, 2.25, 4.25 | 15, 21, 25, 40 | 10-bit, 13-ch., 200 ksps, 10-bit, 17-ch., 200 ksps, 10-bit, 20-ch., 200 ksps, 10-bit, 21-ch., 200 ksps, — | — | — | 0, 2 | 0, 1 | 1, 2 | 1 | QFN28, QFN32, QFP32, QFP48 | 2, 4 | 2.7, 4 | 5.25 | 0, 5 | |
|
C8051F33x
C8051F33x Small Form Factor Microcontrollers
|
25 | 2, 4, 8, 16 | 0.75 | 17, 21 | 10-bit, 16-ch., 200 ksps, — | — | 10-bit, 1-ch., — | 1 | 1 | 1 | 1 | QFN20, QFN24 | 4 | 2.7 | 3.6 | 3 | |
|
C8051F35x
C8051F35x Analog-Intensive MCUs
|
50 | 8 | 0.75 | 17 | 16-bit, 8-ch., 1 ksps, 24-bit, 8-ch., 1 ksps | — | 8-bit, 2-ch. | 1 | 1 | 1 | 1 | QFN28, QFP32 | 4 | 2.7 | 3.6 | 3 | |
|
C8051F36x
C8051F36x Small Form Factor Microcontrollers
|
50, 100 | 32 | 1.25 | 25, 29, 39 | 10-bit, 17-ch., 200 ksps, 10-bit, 21-ch., 200 ksps | — | 10-bit, 1-ch. | 2 | 1 | 1 | 1 | QFN28, QFP32, QFP48 | 4 | 2.7 | 3.6 | 6 | |
|
C8051F38x
C8051F38x Microcontrollers
|
50 | 16, 32, 64 | 2.25, 4.25 | 25, 40 | 10-bit, 21-ch., 500 ksps, 10-bit, 32-ch., 500 ksps, — | — | — | 2 | 1 | 2 | 2 | QFN32, QFP32, QFP48 | 6 | 2.7 | 5.25 | 5 | |
|
C8051F39x
C8051F39x Small Form Factor Microcontrollers
|
50 | 4, 8, 16 | 1 | 17, 21 | 10-bit, 16-ch., 500 ksps, — | — | 10-bit, 2-ch., — | 1 | 1 | 1 | 2 | QFN20, QFN24 | 6 | 1.8 | 3.6 | 3 | |
|
C8051F41x
C8051F41x Small Form Factor Microcontrollers
|
50 | 16, 32 | 2.25 | 20, 24 | — | — | 12-bit, 2-ch. | 2 | 1 | 1 | 1 | QFN28, QFP32 | 4 | 2 | 5.25 | 6 | |
|
C8051F50x
C8051F50x Automotive & Industrial MCUs
|
50 | 32, 64 | 4.25 | 25, 33, 40 | 12-bit, 25-ch., 200 ksps, 12-bit, 32-ch., 200 ksps | — | — | 2 | 1 | 1 | 1 | QFN32, QFN40, QFN48, QFP32, QFP48 | 4 | 1.8 | 5.25 | 6 | |
|
C8051F51x
C8051F51x Automotive & Industrial MCUs
|
50 | 32 | 4.25 | 33 | 12-bit, 32-ch., 200 ksps | — | — | 2 | 1 | 1 | 1 | QFN40 | 4 | 1.8 | 5.25 | 6 | |
|
C8051F52x
Automotive & Industrial MCUs
|
25 | 2, 4, 8 | 0.25 | 6 | 12-bit, 6-ch, 200 ksps, 12-bit, 6-ch., 200 ksps | — | — | 1 | 1 | 1 | DFN10 | 3 | 2 | 5.25 | 3 | ||
|
C8051F53x
C8051F53x Automotive & Industrial MCUs
|
25 | 2, 4, 8 | 0.25 | 16 | 12-bit, 16-ch., 200 ksps | — | — | 1 | 1 | 1 | QFN20, TSSOP20 | 3 | 2 | 5.25 | 3 | ||
|
C8051F54x
C8051F54x Automotive & Industrial MCUs
|
50 | 8, 16 | 1.25 | 18, 25 | 12-bit, 18-ch., 200 ksps, 12-bit, 25-ch., 200 ksps | — | — | 2 | 1 | 1 | QFN24, QFN32 | 4 | 1.8 | 5.25 | 6 | ||
|
C8051F55x
C8051F55x Automotive & Industrial MCUs
|
50 | 16, 32 | 2.25 | 18 | 12-bit, 18-ch., 200 ksps | — | — | 2 | 1 | 1 | 1 | QFN24 | 4 | 1.8 | 5.25 | 6 | |
|
C8051F56x
C8051F56x Automotive & Industrial MCUs
|
50 | 16, 32 | 2.25 | 25, 33 | 12-bit, 25-ch., 200 ksps, 12-bit, 32-ch., 200 ksps | — | — | 2 | 1 | 1 | 1 | QFN32, QFN40, QFP32 | 4 | 1.8 | 5.25 | 6 | |
|
C8051F57x
Automotive & Industrial MCUs
|
50 | 32 | 2.25 | 33 | 12-bit, 32-ch., 200 ksps | — | — | 2 | 1 | 1 | 1 | QFN40 | 4 | 1.8 | 5.25 | 6 | |
|
C8051F58x
C8051F58x Automotive & Industrial MCUs
|
50 | 96, 128 | 8 | 25, 40 | 12-bit, 25-ch., 200 ksps, 12-bit, 32-ch., 200 ksps | — | — | 3 | 1 | 2 | 1 | QFN32, QFN48, QFP32, QFP48 | 6 | 1.8 | 5.25 | 12 | |
|
C8051F92x-93x
C8051F92x-93x Ultra Low-Power MCUs
|
25 | 32, 64 | 4.25 | 16, 24 | 10-bit, 15-ch., 300 ksps, 10-bit, 23-ch., 300 ksps | — | — | 2 | 2 | 1 | 1 | QFN24, QFN32, QFP32 | 4 | 0.9 | 3.6 | 6 | |
|
C8051F96x
C8051F96x Ultra Low-Power Microcontrollers
|
25 | 16, 32, 64, 128 | 4.25, 8 | 34, 57 | 12-bit, 16-ch., 75 ksps | — | — | 2 | 1, 2 | 1 | 1 1 | QFN40, QFN76, QFP80 | 4 | 1.8 | 3.8 | 6 |
Featured 8-bit MCU Kits
EFM8 BB50 8-bit MCU Explorer Kit
EFM8 BB50 8-bit MCU Explorer Kit
EFM8 BB50 8-bit MCU Pro Kit
EFM8 BB50 8-bit MCU Pro Kit
EFM8 BB52 8-bit MCU Pro Kit
EFM8 BB52 8-bit MCU Pro Kit
EFM8 BB52 8-bit MCU Explorer Kit
EFM8 BB52 8-bit MCU Explorer Kit
EFM8 BB51 8-bit MCU Pro Kit
EFM8 BB51 8-bit MCU Pro Kit
EFM8 BB51 8-bit MCU Explorer Kit
EFM8 BB51 8-bit MCU Explorer Kit
8-bit USB Debug Adapter
8-bit USB Debug Adapter
Simplicity Link Debugger
Simplicity Link Debugger
8-bit Software Development
Simplicity Studio is the core development environment designed to support the Silicon Labs IoT portfolio of 8-bit SoCs. It provides access to target device-specific web and SDK resources in the Launcher; software and hardware configuration tools; an integrated development environment (IDE) featuring industry-standard code editors, compilers and debuggers; and advanced, value-add tools for network analysis and code-correlated energy profiling.
Silicon Labs offers an advanced 8-bit microcontroller studio, available at no charge to developers. These tools unlock the power and flexibility of the 8-bit 8051 microcontroller family. All C8051Fxxx families are supported by the 8-bit Studio. If your 8051 device does not appear in the 8-bit studio list, you can also use Simplicity Studio Software Suite.
Simplicity Studio
Making development easier and more efficient by providing everything needed - from initial concept to final product.
32-bit MCU SDK
This software package provides all of the drivers and services needed for a successful 32-bit MCU project.
Precision32 32-bit MCU Development Suite
This tool unlocks the power and flexibility of the Precision32™ 32-bit microcontroller family.
Find the Right 8-bit Microcontroller for your Application
Featured 8-bit Microcontroller Resources
Technical Documentation
Find Data Sheets, App Notes and More.
8-bit MCU Training
Discover training curriculum including written and video modules.
Questions? Visit The Community
Explore the knowledge base and forum to get help and support
Brochures
Silicon Labs Blog
