Hardware
8-bit MCUs
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| 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. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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EFM8 BB5
EFM8 BB5 8-bit Microcontrollers (MCUs)
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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 | |
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EFM8 Busy Bee
EFM8 Busy Bee 8-bit MCUs
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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 | |
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EFM8 Laser Bee
EFM8 Analog Intensive Laser Bee 8-bit MCUs
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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 | |
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EFM8 Sleepy Bee
EFM8 Ultra Low Power Sleepy Bee 8-bit MCUs
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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 | |
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EFM8 Universal Bee
EFM8 USB Capable Universal Bee 8-bit MCUs
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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 | |
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C8051F00x/01x
Analog-Intensive MCUs
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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 | |
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C8051F02x
Analog-Intensive MCUs
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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 | |
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C8051F2xx
Small Form Factor Microcontrollers
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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 | ||
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C8051F04x
Analog-Intensive MCUs
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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 | |
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C8051F06x
Analog-Intensive MCUs
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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 | |
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C8051F12x/13x
Analog-Intensive MCUs
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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 | |
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C8051F30x
Small Form Factor Microcontrollers
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25 | 2, 4, 8 | 0.25 | 8 | 8-bit, 8-ch., 500 ksps, — | — | — | 1 | 0 | 1 | 1 | QFN11 | 3 | 2.7 | 3.6 | 3 | |
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C8051F31x
Small Form Factor Microcontrollers
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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 | |
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C8051F32x/34x
USB Microcontrollers
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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 | |
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C8051F33x
Small Form Factor Microcontrollers
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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 | |
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C8051F35x
Analog-Intensive MCUs
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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 | |
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C8051F36x
Small Form Factor Microcontrollers
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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 | |
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C8051F38x
USB Microcontrollers
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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 | |
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C8051F39x
Small Form Factor Microcontrollers
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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 | |
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C8051F41x
Small Form Factor Microcontrollers
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50 | 16, 32 | 2.25 | 20, 24 | — | — | 12-bit, 2-ch. | 2 | 1 | 1 | 1 | QFN28, QFP32 | 4 | 2 | 5.25 | 6 | |
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C8051F50x
Automotive & Industrial MCUs
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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 | |
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C8051F51x
Automotive & Industrial MCUs
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50 | 32 | 4.25 | 33 | 12-bit, 32-ch., 200 ksps | — | — | 2 | 1 | 1 | 1 | QFN40 | 4 | 1.8 | 5.25 | 6 | |
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C8051F52x
Automotive & Industrial MCUs
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25 | 2, 4, 8 | 0.25 | 6 | 12-bit, 6-ch., 200 ksps | — | — | 1 | 1 | 1 | DFN10 | 3 | 2 | 5.25 | 3 | ||
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C8051F53x
Automotive & Industrial MCUs
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25 | 2, 4, 8 | 0.25 | 16 | 12-bit, 16-ch., 200 ksps | — | — | 1 | 1 | 1 | QFN20, TSSOP20 | 3 | 2 | 5.25 | 3 | ||
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C8051F54x
Automotive & Industrial MCUs
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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 | ||
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C8051F55x
Automotive & Industrial MCUs
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50 | 16, 32 | 2.25 | 18 | 12-bit, 18-ch., 200 ksps | — | — | 2 | 1 | 1 | 1 | QFN24 | 4 | 1.8 | 5.25 | 6 | |
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C8051F56x
Automotive & Industrial MCUs
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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 | |
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C8051F57x
Automotive & Industrial MCUs
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50 | 16, 32 | 2.25 | 33 | 12-bit, 32-ch., 200 ksps | — | — | 2 | 1 | 1 | 1 | QFN40 | 4 | 1.8 | 5.25 | 6 | |
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C8051F58x
Automotive & Industrial MCUs
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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 | |
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C8051F59x
Automotive & Industrial MCUs
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50 | 96 | 8 | 33 | 12-bit, 32-ch., 200 ksps | — | — | 3 | 1 | 2 | 1 | QFN40 | 6 | 1.8 | 5.25 | 12 | |
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C8051F80x/1x/2x/3x
Capacitive Touch Sense MCUs
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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 | |
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C8051F85x
Small Form Factor MCUs
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25 | 2, 4, 8 | 0.25, 0.5 | 16, 18 | — | — | — | 2 | 1 | 1 | 1 | QFN20, QSOP24 | 4 | 2.2 | 3.6 | 3 | |
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C8051F86x
Small Form Factor MCUs
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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 | |
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C8051F90x-91x
Ultra Low-Power MCUs
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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 | |
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C8051F92x-93x
Ultra Low-Power MCUs
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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 | |
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C8051F96x
Ultra Low-Power Microcontrollers
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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 | |
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C8051F97x
Low-Power Capacitive Sense MCUs
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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 | |
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C8051F98x
Ultra Low-Power Microcontrollers
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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 | |
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C8051F99x
Low Power Capacitive Touch Sense MCUs
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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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Kits and Boards
8-bit MCU Kits & Boards
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.
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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