EFM8BB2 Datasheet, PDF (1/55 Pages) Silicon Laboratories – The EFM8BB2 highlighted features are listed below

EFM8 Busy Bee Family
EFM8BB2 Data Sheet
The EFM8BB2, part of the Busy Bee family of MCUs, is a multi-
purpose line of 8-bit microcontrollers with a comprehensive feature
set in small packages.
These devices offer high-value by integrating advanced analog and enhanced high-
speed communication peripherals into small packages, making them ideal for space-con-
strained applications. With an efficient 8051 core, enhanced pulse-width modulation, and
precision analog, the EFM8BB2 family is also optimal for embedded applications.
EFM8BB2 applications include the following:
• Motor control
• Consumer electronics
• Sensor controllers
• Medical equipment
• Lighting systems
• High-speed communication hub
KEY FEATURES
• Pipelined 8-bit C8051 core with 50 MHz
maximum operating frequency
• Up to 22 multifunction, 5 V tolerant I/O pins
• One 12-bit Analog to Digital converter
(ADC)
• Two Low-current analog comparators with
build-in DAC as reference input
• Integrated temperature sensor
• 3-channel PWM / PCA with special
hardware kill/safe state capability
• Five 16-bit timers
• Two UARTs, SPI, SMBus/I2C master/slave
and I2C slave
• Priority crossbar for flexible pin mapping
Core / Memory
CIP-51 8051 Core
(50 MHz)
Clock Management
External CMOS
Oscillator
High Frequency
49 MHz RC
Oscillator
Energy Management
Internal LDO
Regulator
Power-On Reset
Flash Program
Memory
(16 KB)
RAM Memory
(2304 bytes)
Debug Interface
with C2
Low Frequency
RC Oscillator
High Frequency
24.5 MHz RC
Oscillator
Brown-Out
Detector
5 V-to 3.3 V LDO
Regulator
Serial Interfaces
2 x UART
SPI
I²C / SMBus
High-Speed
I2C Slave
I/O Ports
External
Interrupts
Pin Reset
General
Purpose I/O
Pin Wakeup
8-bit SFR bus
Timers and Triggers
Timer
0/1/2
PCA/PWM
Watchdog
Timer
Timer 3/4
Lowest power mode with peripheral operational:
Normal
Idle
Suspend
Snooze
Shutdown
Analog Interfaces
ADC
Comparator 0
Comparator 1
Internal
Voltage
Reference
Security
16-bit CRC
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