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//
Microcontrollers // 8-bit Microcontrollers

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. By leveraging optimized analog and digital peripherals, flexible pin mapping, and high system clock speeds, our 8-bit MCUs allow you to do more in less time, for lower power, and with lower latency. Take advantage of our free tool set that includes an IDE, programmer, compiler, software development kit (SDK), and more, enabling you to evaluate, develop, debug and ultimately, get to market faster.

  1. Hardware
  2. Kits and Boards
  3. Software and Tools
  1. Hardware
8-bit MCUs Select Columns
Select Columns
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 8, 16, 32 1.28, 2.30 16, 25, 29 12-bit, 12-ch., 12-bit, 16-ch, 12-bit, 16-ch. — -, 10-bit, 1-ch, 10-bit, 1-ch. 2 1 1, 2 1,2 QFN20, QFN32, TSSOP20, TSSOP28 4 5.5 1.8 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, 18, 20, 21, 22, 28, 29 12-bit, 12-ch., 12-bit, 13-ch., 12-bit, 15-ch., 12-bit, 16-ch., 12-bit, 20-ch. — 12-bit, 2-ch., 12-bit, 4-ch., — 2 1 1, 2 1 1 QFN20, QFN24, QFN28, QFN32, QFP32, QSOP24, 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, 21, 28, 29 14-bit, 12-ch., 14-bit, 13-ch., 14-bit, 20-ch. — 12-bit, 2-ch., 12-bit, 4-ch., — 2 1 2 1 1 QFN24, QFN32, QFP32, QSOP24 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, QSOP24 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, 17, 22, 25, 40 10-bit, 20-ch., 10-bit, 32-ch., 12-bit, 11-ch., 12-bit, 15-ch., 12-bit, 20-ch. — — 2 1 2 2 1 QFN20, QFN28, QFN32, QFP32, QFP48, QSOP24 5, 6 2.2, 2.7 3.8, 5.25 3, 5
C8051F00x/01x
Analog-Intensive MCUs
20, 25 32 0.25, 2.25 8, 16, 32 10-bit, 4-ch., 100 ksps, 10-bit, 8-ch., 100 ksps, 12-bit, 4-ch., 100 ksps, 12-bit, 8-ch., 100 ksps — 12-bit, 2-ch. 1, 2 1 1 1 QFP32, QFP48, QFP64 4 2.7 3.6 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
C8051F2xx
C8051F2xx Small Form Factor Microcontrollers
25 8 0.25, 1.25 22, 32 12-bit, 32-ch., 100 ksps, 8-bit, 22-ch., 100 ksps, 8-bit, 32-ch., 100 ksps, — — — 2 1 1 QFP32, QFP48 3 2.7 3.6 0
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, 5.25 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 16, 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
C8051F52x Automotive & Industrial MCUs
25 2, 4, 8 0.25 6 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, QFP32 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
C8051F57x Automotive & Industrial MCUs
50 16, 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, 33, 40 12-bit, 25-ch., 200 ksps, 12-bit, 32-ch., 200 ksps — — 3 1 2 1 QFN32, QFN40, QFN48, QFP32, QFP48 6 1.8 5.25 12
C8051F59x
C8051F59x Automotive & Industrial MCUs
50 96 8 33 12-bit, 32-ch., 200 ksps — — 3 1 2 1 QFN40 6 1.8 5.25 12
C8051F80x/1x/2x/3x
C8051F80x/1x/2x/3x Capacitive Touch Sense MCUs
25 4, 8, 16 0.25, 0.5 13, 17 10-bit, 12-ch., 500 ksps, 10-bit, 16-ch., 500 ksps, — — — 1 1 1 1 QFN20, SOIC16 3 1.8 3.6 3
C8051F85x
C8051F85x Small Form Factor MCUs
25 2, 4, 8 0.25, 0.5 16, 18 — — — 2 1 1 1 QFN20, QSOP24 4 2.2 3.6 3
C8051F86x
C8051F86x Small Form Factor MCUs
25 2, 4, 8 0.25, 0.5 13 12-bit, 12-ch., 200 ksps, — — — 2 1 1 1 SOIC16 4 2.2 3.6 3
C8051F90x-91x
C8051F90x/91x Ultra Low-Power MCUs
25 8, 16 0.75 16 10-bit, 15-ch., 300 ksps, 12-bit, 15-ch., 75 ksps — — 2 2 1 1 QFN24 4 0.9 3.6 6
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
C8051F97x
C8051F97x Low-Power Capacitive Sense MCUs
25 16, 32 4, 8 19, 28, 43 10-bit, 19-ch., 300 ksps, 10-bit, 28-ch., 300 ksps, 10-bit, 43-ch., 300 ksps — — 0 1 1 1 1 QFN24, QFN32, QFN48 4 1.8 3.6 3
C8051F98x
C8051F98x Ultra Low-Power Microcontrollers
25 2, 4, 8 0.5 16, 17 10-bit, 10-ch., 300 ksps, 10-bit, 9-ch., 300 ksps, 12-bit, 10-ch., 75 ksps, 12-bit, 9-ch., 75 ksps, — — — 1 0, 1 1 1 QFN20, QFN24, QSOP24 4 1.8 3.6 3
C8051F99x
C8051F99x Low Power Capacitive Touch Sense MCUs
25 8 0.5 16, 17 12-bit, 10-ch., 75 ksps, 12-bit, 9-ch., 75 ksps, — — — 1 1 1 1 QFN20, QFN24, QSOP24 4 1.8 3.6 3
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      1. Kits and Boards
      8-bit MCU Kits & Boards
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      Explorer Kits
      Low cost exploratory kits - to get you started
      Starter Kits
      Modular kits for software development and feature evaluation of IoT devices
      Development Kits
      Full-featured application development kits
      Evaluation Kits
      Product and feature evaluation kits
      Demo Kits
      Use case and feature-specific demos
      Reference Designs
      Application-specfic designs showcasing complete system solutions
      Radio Boards
      Wireless starter kit plug-in boards featuring specific SoC or module wireless devices
      Expansion Boards
      Starter kit and ecosystem accessory boards
      Thunderboard Kits
      Low-cost software development and prototyping kits for IoT devices
      Debug and Programming Tools
      Debugging and programming tools and accessories
      Featured Kit

      EFM8BB1 Low Cost 8-bit MCU Explorer Kit

      EFM8BB1 Low-Cost 8-bit MCU Explorer Kit is an easy-to-use yet powerful development starting point. It contains an integrated debugger and a simple USB micro connection to allow rapid prototyping.

      EFM8BB1 Low Cost 8-bit MCU Explorer Kit

      EFM8BB1 Low-Cost 8-bit MCU Explorer Kit is an easy-to-use yet powerful development starting point. It contains an integrated debugger and a simple USB micro connection to allow rapid prototyping.
      MSRP $6.25
      Add to Cart
      Learn More
      1. Software and Tools

      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   Simplicity Studio is designed to make the development process easier, faster, and more efficient by providing designers with everything they need to complete their projects from initial concept to final product. The Simplicity Studio platform provides unified development support for EFM8 and 8051 SoCs, complete with wireless stacks.
      8-bit Microcontroller Studio   These tools help develop, download, and debug firmware to the 8051 8-bit MCU devices. Now includes an unlimited Keil® PK51 Professional Developer's Kit
      EFM8 IEC-60730 Class B Safety Software   The EFM8 IEC-60730 software package enables end products using the EFM8 MCUs to quickly comply with the IEC-60730 Class B standard.



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