EFM8 BB5 8-bit Microcontrollers (MCUs)

The EFM8BB5, part of the wide supply 5 Volt Busy Bee family of MCUs, is a general-purpose line of 8-bit 8051-based microcontrollers. These devices offer high-value by integrating system, analog, and communication peripherals to cut down on external components, which reduces overall BOM cost. With an efficient 8051 core, 5 Volt-capable I/O, precision analog, accurate internal oscillators, and enhanced pulse-width modulation, the EFM8BB5 family is also optimal for embedded applications.

C8051 core with 50 MHz maximum operating frequency
5 V capable I/O pins

Busy Bee Common Specs

  • Pipelined 8-bit C8051 core with 50 MHz maximum operating frequency
  • Up to 29 multifunction, 5 V tolerant I/O pins
  • Optional 10-bit digital to analog converter (DAC)
  • 1 x 12-bit Analog to Digital converter (ADC)
  • 2 x Analog comparators
  • Integrated temperature sensor
  • 3-channel PCA with PWM
  • 3-channel PWM engine
  • 4 x 16-bit timers
  • 2 x 8-bit timers
  • 2 x UART & SMBus/I2C
  • SPI with 4 byte FIFO
  • Priority crossbar for flexible pin mapping
  • 4 x configurable logic units
Find the Right EFM8 BB5 Device Select Columns
Select Columns
Part Number MCU Core MHz Flash RAM Dig I/O Pins 5 Volt Tolerant ADC 1 USB Temp Sensor Timers (16-bit) DAC Comparators UART SPI I2C HS I2C Slave I2S EMIF CAN LIN AES AEC-Q100 Vdd (min) Vdd (max) Package Type Package Size (mm) Internal Osc. VREF Debug Interface Temperature Range (ºC) Industrial Automotive PCA Channels
8051 50 16 1.28 29 12-bit, 16-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 QFN32 5x5 ±2 C2 -40 85 3
8051 50 16 1.28 16 12-bit, 12-ch. 4 - 2 1 1 1 0 0 0 0 0 5.5 1.8 QFN20 3x3 ±2 C2 -40 125 3
8051 50 8 1.28 16 12-bit, 12-ch. 4 - 2 1 1 1 0 0 0 0 0 5.5 1.8 TSSOP20 6.5x4.4 ±2 C2 -40 125 3
8051 50 16 1.28 25 12-bit, 16-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 TSSOP28 9.7x4.4 ±2 C2 -40 85 3
8051 50 32 2.30 16 12-bit, 12-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 QFN20 3x3 ±2 C2 -40 85 3
8051 50 16 1.28 16 12-bit, 12-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 TSSOP20 6.5x4.4 ±2 C2 -40 85 3
8051 50 16 1.28 16 12-bit, 12-ch. 4 - 2 1 1 1 0 0 0 0 0 5.5 1.8 TSSOP20 6.5x4.4 ±2 C2 -40 125 3
8051 50 8 1.28 16 12-bit, 12-ch. 4 - 2 1 1 1 0 0 0 0 0 5.5 1.8 QFN20 3x3 ±2 C2 -40 85 3
8051 50 16 1.28 29 12-bit, 16-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 QFN32 5x5 ±2 C2 -40 125 3
8051 50 16 1.28 16 12-bit, 12-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 QFN20 3x3 ±2 C2 -40 85 3
8051 50 16 1.28 16 12-bit, 12-ch. 4 - 2 1 1 1 0 0 0 0 0 5.5 1.8 TSSOP20 6.5x4.4 ±2 C2 -40 85 3
8051 50 32 2.30 16 12-bit, 12-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 TSSOP20 6.5x4.4 ±2 C2 -40 125 3
8051 50 32 2.30 25 12-bit, 16-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 TSSOP28 9.7x4.4 ±2 C2 -40 125 3
8051 50 16 1.28 25 12-bit, 16-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 TSSOP28 9.7x4.4 ±2 C2 -40 125 3
8051 50 32 2.30 29 12-bit, 16-ch 4 10-bit, 1-ch 2 2 1 2 0 0 0 0 0 5.5 1.8 QFN32 5x5 ±2 C2 -40 125 3
8051 50 16 1.28 16 12-bit, 12-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 QFN20 3x3 ±2 C2 -40 125 3
8051 50 16 1.28 16 12-bit, 12-ch. 4 - 2 1 1 1 0 0 0 0 0 5.5 1.8 QFN20 3x3 ±2 C2 -40 85 3
8051 50 16 1.28 16 12-bit, 12-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 TSSOP20 6.5x4.4 ±2 C2 -40 125 3
8051 50 32 2.30 16 12-bit, 12-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 QFN20 3x3 ±2 C2 -40 125 3
8051 50 32 2.30 16 12-bit, 12-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 TSSOP20 6.5x4.4 ±2 C2 -40 85 3
8051 50 32 2.30 25 12-bit, 16-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 TSSOP28 9.7x4.4 ±2 C2 -40 85 3
8051 50 32 2.30 29 12-bit, 16-ch. 4 10-bit, 1-ch. 2 2 1 2 0 0 0 0 0 5.5 1.8 QFN32 5x5 ±2 C2 -40 85 3
8051 50 8 1.28 16 12-bit, 12-ch. 4 - 2 1 1 1 0 0 0 0 0 5.5 1.8 QFN20 3x3 ±2 C2 -40 125 3
8051 50 8 1.28 16 12-bit, 12-ch. 4 - 2 1 1 1 0 0 0 0 0 5.5 1.8 TSSOP20 6.5x4.4 ±2 C2 -40 85 3

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