Dimensions:
                                    
                                    
                                        4 x 4 x 0.75mm
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of I2C Channels:
                                    
                                    
                                        1
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of USART Channels:
                                    
                                    
                                        0
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        USB Channels:
                                    
                                    
                                        0
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Width:
                                    
                                    
                                        4mm
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Program Memory Size:
                                    
                                    
                                        16 kB
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of PWM Units:
                                    
                                    
                                        1
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        RAM Size:
                                    
                                    
                                        2.304 kB
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Automotive Standard:
                                    
                                    
                                        AEC-Q100
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Data Bus Width:
                                    
                                    
                                        8bit
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Instruction Set Architecture:
                                    
                                    
                                        8051
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Program Memory Type:
                                    
                                    
                                        Flash
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Package Type:
                                    
                                    
                                        QFN
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Maximum Frequency:
                                    
                                    
                                        50MHz
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of PCI Channels:
                                    
                                    
                                        0
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of LIN Channels:
                                    
                                    
                                        0
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Maximum Operating Temperature:
                                    
                                    
                                        +125 °C
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of UART Channels:
                                    
                                    
                                        2
                                    
                                                                                                        
                                                                                                                
                                    
                                                                                                                
                                    
                                        Minimum Operating Temperature:
                                    
                                    
                                        -40 °C
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Maximum Number of Ethernet Channels:
                                    
                                    
                                        0
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Family Name:
                                    
                                    
                                        EFM8BB3
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Device Core:
                                    
                                    
                                        CIP-51
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Length:
                                    
                                    
                                        4mm
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of ADC Units:
                                    
                                    
                                        1
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Pin Count:
                                    
                                    
                                        24
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Pulse Width Modulation:
                                    
                                    
                                        1 (6 Channel)
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Mounting Type:
                                    
                                    
                                        Surface Mount
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of Ethernet Channels:
                                    
                                    
                                        0
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Height:
                                    
                                    
                                        0.75mm
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Typical Operating Supply Voltage:
                                    
                                    
                                        2.2 → 3.6 V
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        ADCs:
                                    
                                    
                                        12 x 12 bit
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of CAN Channels:
                                    
                                    
                                        0
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of SPI Channels:
                                    
                                    
                                        1
                                    
                                                                                                                                                                    
                                    
                                                                                                                
                                    
                                        HTSUS:
                                    
                                    
                                        8542.31.0001
                                    
                                                                                                        
                                                                                                                
                                    
                                                                                                                
                                    
                                        Program Memory Size:
                                    
                                    
                                        16KB (16K x 8)
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Number of I/O:
                                    
                                    
                                        20
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Operating Temperature:
                                    
                                    
                                        -40°C ~ 125°C (TA)
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Voltage - Supply (Vcc/Vdd):
                                    
                                    
                                        2.2V ~ 3.6V
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Package / Case:
                                    
                                    
                                        24-WFQFN Exposed Pad
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        RAM Size:
                                    
                                    
                                        2.25K x 8
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Peripherals:
                                    
                                    
                                        Brown-out Detect/Reset, POR, PWM, WDT
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Program Memory Type:
                                    
                                    
                                        FLASH
                                    
                                                                                                        
                                                                                                                
                                    
                                                                                                                
                                    
                                        Connectivity:
                                    
                                    
                                        I²C, SMBus, SPI, UART/USART
                                    
                                                                                                        
                                                                                                                
                                                                                                                
                                    
                                                                                                                
                                    
                                        Package:
                                    
                                    
                                        Tube
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        EEPROM Size:
                                    
                                    
                                        -
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Oscillator Type:
                                    
                                    
                                        Internal
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Moisture Sensitivity Level (MSL):
                                    
                                    
                                        2  (1 Year)
                                    
                                                                                                        
                                                                                                                
                                    
                                                                                                                
                                    
                                        Core Size:
                                    
                                    
                                        8-Bit
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Mounting Type:
                                    
                                    
                                        Surface Mount
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Series:
                                    
                                    
                                        Busy Bee
                                    
                                                                                                        
                                                                                                                
                                    
                                                                                                                
                                    
                                        Supplier Device Package:
                                    
                                    
                                        24-QFN (4x4)
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Data Converters:
                                    
                                    
                                        A/D 12x10/12b SAR; D/A 2x12b
                                    
                                                                                                        
                                                                                                                
                                                                                                                
                                    
                                                                                                                
                                    
                                        Core Processor:
                                    
                                    
                                        CIP-51 8051
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Speed:
                                    
                                    
                                        50MHz
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        Base Product Number:
                                    
                                    
                                        EFM8BB31
                                    
                                                                                                        
                                    
                                                                                                                
                                    
                                        ECCN:
                                    
                                    
                                        3A991A2