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  • Top down view of a Adafruit Stereo FM Transmitter with RDS/RBDS Breakout next to a 11-pin header and under blue string coiled up. Adafruit Stereo FM Transmitter with RDS/RBDS Breakout - Si4713 No Longer Stocked
  • Angled shot of a VCNL4010 Proximity/Light sensor. VCNL4010 Proximity/Light sensor Out of Stock
  • Angled shot of a small, blue, rectangular temperature sensor breakout board. MCP9808 High Accuracy I2C Temperature Sensor Breakout Board $4.95 Add to Cart
  • Top down view of a Adafruit LIS3DH Triple-Axis Accelerometer. Adafruit LIS3DH Triple-Axis Accelerometer (+-2g/4g/8g/16g) $4.95 Add to Cart
  • Angled shot of blue, square-shaped accelerometer breakout. Adafruit Triple-Axis Accelerometer - ±2/4/8g @ 14-bit - MMA8451 $7.95 Add to Cart
  • Angled shot of a Adafruit Precision NXP 9-DOF Breakout Board. Adafruit Precision NXP 9-DOF Breakout Board No Longer Stocked
  • Top down view of a FLORA 9-DOF Accelerometer/Gyroscope/Magnetometer. FLORA 9-DOF Accelerometer/Gyroscope/Magnetometer - LSM9DS0 No Longer Stocked
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171 Beginner Skill guide

The List

OMG Can you believe it? We didn't include every I2C device in the known universe! Fear not, you can now submit a pull request on GitHub to add your favorite device! Visit https://github.com/adafruit/I2C_Addresses/ for more information. All I2C addresses here are in 7-bit format Special cases:
  • PCA9685 can use any address between 0x40 to 0x7F. Some of these addresses are fixed. See the datasheet for details. This chip is used in:
    • PWM/Servo Breakout
    • PWM/Servo Shield
    • PWM/Servo HAT
    • PWM/Servo Bonnet
    • PWM/Servo Wing
    • DC & Stepper Motor Shield
    • DC & Stepper Motor HAT
    • DC & Stepper Motor Bonnet
    • DC & Stepper Motor Wing
  • 0x00 - 0x07 and 0x78 - 0x7F are reserved I2C addresses
0x00 - 0x0F

0x00

  • Reserved - general call address

0x01

  • Reserved for CBUS compatibility

0x02

  • Reserved for I2C-compatible bus variants

0x03

  • Reserved for future use

0x04

  • Reserved for HS-mode controller

0x05

  • Reserved for HS-mode controller

0x06

  • Reserved for HS-mode controller

0x07

  • Reserved for HS-mode controller

0x0B

  • LC709203F Fuel Gauge and Battery Monitor (0x0B only)

0x0C

  • MLX90393 3-Axis Magnetometer (0x0C - 0x0F)

0x0D

  • MLX90393 3-Axis Magnetometer (0x0C - 0x0F)

0x0E

  • MAG3110 3-Axis Magnetometer (0x0E only)
  • MLX90393 3-Axis Magnetometer (0x0C - 0x0F)

0x0F

  • MLX90393 3-Axis Magnetometer (0x0C - 0x0F)
0x10 - 0x1F

0x10

  • PA1010D GPS Module (0x10 only)
  • VEML6075 UV Sensor (0x10 only)
  • VEML7700 Ambient Light Sensor (0x10 only)

0x11

  • Si4713 FM Transmitter with RDS (0x11 or 0x63)

0x12

  • PMSA0031 Gas Sensor (0x12 only)

0x13

  • VCNL40x0 Proximity Sensor (0x13 only)

0x18

  • LIS331 3-Axis Accelerometer (0x18 or 0x19)
  • LIS3DH 3-Axis Accelerometer (0x18 or 0x19)
  • MCP9808 Temperature Sensor (0x18 - 0x1F)
  • MPRLS Pressure Sensor (0x18)

0x19

  • LIS331 3-Axis Accelerometer (0x18 or 0x19)
  • LIS3DH 3-Axis Accelerometer (0x18 or 0x19)
  • LSM303 Accelerometer/Magnetometer (0x19 for accelerometer and 0x1E for magnetometer)
  • MCP9808 Temperature Sensor (0x18 - 0x1F)

0x1A

  • AGS02MA TVOC Gas Sensor (0x1A)
  • MCP9808 Temperature Sensor (0x18 - 0x1F)

0x1B

  • MCP9808 Temperature Sensor (0x18 - 0x1F)

0x1C

  • FXOS8700 Accelerometer/Magnetometer (0x1C, 0x1D, 0x1E or 0x1F)
  • LIS3MDL Magetometer (0x1C & 0x1E)
  • MCP9808 Temperature Sensor (0x18 - 0x1F)
  • MMA7455L (0x1C or 0x1D)
  • MMA845x 3-Axis Accelerometer (0x1C or 0x1D)

0x1D

  • ADXL343 3-Axis Accelerometer (0x1D or 0x53)
  • ADXL345 3-Axis Accelerometer (0x1D or 0x53)
  • FXOS8700 Accelerometer/Magnetometer (0x1C, 0x1D, 0x1E or 0x1F)
  • LSM9DS0 9-Axis IMU (0x1D or 0x1E for Accel/Mag, 0x6A or 0x6B for Gyro)
  • MCP9808 Temperature Sensor (0x18 - 0x1F)
  • MMA7455L (0x1C or 0x1D)
  • MMA845x 3-Axis Accelerometer (0x1C or 0x1D)

0x1E

  • FXOS8700 Accelerometer/Magnetometer (0x1C, 0x1D, 0x1E or 0x1F)
  • HMC5883 Magnetometer (0x1E only)
  • LIS2MDL Magnetometer (0x1E only)
  • LIS3MDL Magnetometer (0x1C & 0x1E)
  • LSM303 Accelerometer/Magnetometer (0x19 for accelerometer and 0x1E for magnetometer)
  • LSM9DS0 9-Axis IMU (0x1D or 0x1E for Accel/Mag, 0x6A or 0x6B for Gyro)
  • MCP9808 Temperature Sensor (0x18 - 0x1F)

0x1F

  • FXOS8700 Accelerometer & Magnetometer (0x1C, 0x1D, 0x1E or 0x1F)
  • MCP9808 Temperature Sensor (0x18 - 0x1F)
0x20 - 0x2F

0x20

  • Chirp! Water Sensor (0x20)
  • FXAS21002 Gyroscope (0x20 or 0x21)
  • MCP23008 GPIO Expander (0x20 - 0x27)
  • MCP23017 GPIO Expander (0x20 - 0x27)

0x21

  • FXAS21002 Gyroscope (0x20 or 0x21)
  • MCP23008 GPIO Expander (0x20 - 0x27)
  • MCP23017 GPIO Expander (0x20 - 0x27)

0x22

  • MCP23008 GPIO Expander (0x20 - 0x27)
  • MCP23017 GPIO Expander (0x20 - 0x27)

0x23

  • BH1750 Light Sensor (0x23 or 0x5C)
  • MCP23008 GPIO Expander (0x20 - 0x27)
  • MCP23017 GPIO Expander (0x20 - 0x27)

0x24

  • MCP23008 GPIO Expander (0x20 - 0x27)
  • MCP23017 GPIO Expander (0x20 - 0x27)
  • PN532 NFC/RFID reader (0x24 only, unless manually configured)

0x25

  • MCP23008 GPIO Expander (0x20 - 0x27)
  • MCP23017 GPIO Expander (0x20 - 0x27)

0x26

  • MCP23008 GPIO Expander (0x20 - 0x27)
  • MCP23017 GPIO Expander (0x20 - 0x27)
  • MSA301 3-Axis Accelerometer (0x26 only)

0x27

  • MCP23008 GPIO Expander (0x20 - 0x27)
  • MCP23017 GPIO Expander (0x20 - 0x27)

0x28

  • BNO055 IMU (0x28 or 0x29)
  • CAP1188 8-Channel Capacitive Touch (0x28 - 0x2D)
  • DS1841 Digital Logarithmic Potentiometer (0x28-0x2B)
  • DS3502 Digital 10K Potentiometer (0x28-0x2B)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TSL2591 Light Sensor (0x29 and 0x28)

0x29

  • BNO055 IMU (0x28 or 0x29)
  • CAP1188 8-Channel Capacitive Touch (0x28 - 0x2D )
  • DS1841 Digital Logarithmic Potentiometer (0x28-0x2B)
  • DS3502 Digital 10K Potentiometer (0x28-0x2B)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TCS34725 Color Sensor (0x29 only)
  • TSL2561 Light Sensor (0x29, 0x39 or 0x49)
  • TSL2591 Light Sensor (0x29 and 0x28)
  • VL53L0x ToF Sensor (0x29, software selectable)
  • VL6180X ToF Sensor (0x29)

0x2A

  • CAP1188 8-Channel Capacitive Touch (0x28 - 0x2D)
  • DS1841 Digital Logarithmic Potentiometer (0x28-0x2B)
  • DS3502 Digital 10K Potentiometer (0x28-0x2B)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)

0x2B

  • CAP1188 8-Channel Capacitive Touch (0x28 - 0x2D)
  • DS1841 Digital Logarithmic Potentiometer (0x28-0x2B)
  • DS3502 Digital 10K Potentiometer (0x28-0x2B)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)

0x2C

  • CAP1188 8-Channel Capacitive Touch (0x28 - 0x2D)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)

0x2D

  • CAP1188 8-Channel Capacitive Touch (0x28 - 0x2D)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)

0x2E

  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
0x30 - 0x3F

0x30

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)

0x31

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)

0x32

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)

0x33

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • MLX90640 IR Thermal Camera (0x33 only)

0x34

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)

0x35

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)

0x36

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • Adafruit Stemma QT Rotary Encoder with NeoPixel (0x36 - 0x3D)
  • MAX17048 LiPoly/LiIon Fuel Gauge and Battery Monitor (0x36 only)

0x37

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • Adafruit Stemma QT Rotary Encoder with NeoPixel (0x36 - 0x3D)

0x38

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • Adafruit Stemma QT Rotary Encoder with NeoPixel (0x36 - 0x3D)
  • AHT20 Humidity/Temperature Sensor (0x38 only)
  • DHT20 Humidity/Temperature Sensor (0x38 only)
  • FT6x06 Capacitive Touch Driver (0x38 only)
  • NCP5623 RGB LED Driver
  • NEWOPTO XYC-ALS21C-K1 Ambient light sensor (0x38)
  • VEML6070 UV Index (0x38 and 0x39)

0x39

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • Adafruit Stemma QT Rotary Encoder with NeoPixel (0x36 - 0x3D)
  • APDS-9960 IR/Color/Proximity Sensor (0x39 only)
  • AS7341 Color Sensor (0x39)
  • TSL2561 Light Sensor (0x29, 0x39 or 0x49)
  • VEML6070 UV Light Sensor (0x38 and 0x39)

0x3A

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • Adafruit Stemma QT Rotary Encoder with NeoPixel (0x36 - 0x3D)
  • PCF8577C LCD direct/duplex driver (0x3A only, with parallel adressing)

0x3B

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • Adafruit Stemma QT Rotary Encoder with NeoPixel (0x36 - 0x3D)

0x3C

All OLED controllers below use either 0x3C or 0x3D depending on a control pin. Hardware selectable on some displays with a solder jumper.

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • Adafruit Stemma QT Rotary Encoder with NeoPixel (0x36 - 0x3D)
  • CH1115 Monochrome OLED (0x3C or 0x3D)
  • CH1116 Monochrome OLED (0x3C or 0x3D)
  • SSD1305 Monochrome OLED (0x3C or 0x3D)
  • SSD1306 Monochrome OLED (0x3C or 0x3D)
  • SSD1309 Monochrome OLED (0x3C or 0x3D)
  • SSD1315 Monochrome OLED (0x3C or 0x3D)
  • SH1106 Monochrome OLED (0x3C or 0x3D)
  • SSD1327 16-Level Grayscale OLED (0x3C or 0x3D)
  • ST75256 4-Level Grayscale LCD (0x3C - 0x3F)

0x3D

All OLED controllers below use either 0x3C or 0x3D depending on a control pin. Hardware selectable on some displays with a solder jumper.

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • Adafruit Stemma QT Rotary Encoder with NeoPixel (0x36 - 0x3D)
  • CH1115 Monochrome OLED (0x3C or 0x3D)
  • CH1116 Monochrome OLED (0x3C or 0x3D)
  • SSD1305 Monochrome OLED (0x3C or 0x3D)
  • SSD1306 Monochrome OLED (0x3C or 0x3D)
  • SSD1309 Monochrome OLED (0x3C or 0x3D)
  • SSD1315 Monochrome OLED (0x3C or 0x3D)
  • SH1106 Monochrome OLED (0x3C or 0x3D)
  • SSD1327 16-Level Grayscale OLED (0x3C or 0x3D)
  • ST75256 4-Level Grayscale LCD (0x3C - 0x3F)

0x3E

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • ST75256 4-Level Grayscale LCD (0x3C - 0x3F)

0x3F

  • Adafruit NeoKey 1x4 Four Mechanical Key Switches with NeoPixels (0x30-0x3F)
  • Adafruit NeoSlider Slide Potentiometer with 4 NeoPixels (0x30-0x3F)
  • ST75256 4-Level Grayscale LCD (0x3C - 0x3F)
0x40 - 0x4F
  • PCA9685. See "Special Cases"

0x40

  • HDC1008 Humidity/Temperature Sensor (0x40, 0x41, 0x42 or 0x43)
  • HTU21D-F Humidity/Temperature Sensor (0x40 only)
  • HTU31D Humidity/Temperature Sensor (0x40 or 0x41)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • MS8607 Humidity/Temperature/Pressure Sensor (0x40 for Humidity and 0x76 for Temperature/Pressure)
  • Si7021 Humidity/Temperature Sensor (0x40 only)
  • PCA9685 16-Channel PWM Driver (default address) (0x40 - 0x7F)
  • TMP007 IR Temperature Sensor (0x40 - 0x47)
  • TMP006 IR Temperature Sensor (0x40 - 0x47)

0x41

  • HDC1008 Humidity/Temperature Sensor (0x40, 0x41, 0x42 or 0x43)
  • HTU31D Humidity/Temperature Sensor (0x40 or 0x41)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • STMPE610/STMPE811 Resistive Touch Controller (0x41 or 0x44)
  • TMP007 IR Temperature Sensor (0x40 - 0x47)
  • TMP006 IR Temperature Sensor (0x40 - 0x47)

0x42

  • HDC1008 Humidity/Temperature Sensor (0x40, 0x41, 0x42 or 0x43)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • TMP007 IR Temperature Sensor (0x40 - 0x47)
  • TMP006 IR Temperature Sensor (0x40 - 0x47)

0x43

  • HDC1008 Humidity/Temperature Sensor (0x40, 0x41, 0x42 or 0x43)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • TMP007 IR Temperature Sensor (0x40 - 0x47)
  • TMP006 IR Temperature Sensor (0x40 - 0x47)

0x44

  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • ISL29125 Color Sensor (0x44 only)
  • SHT45 Humidity/Temperature Sensor (0x44)
  • SHT40 Humidity/Temperature Sensor (0x44)
  • SHT31 Humidity/Temperature Sensor (0x44 or 0x45 selectable)
  • STMPE610/STMPE811 Resistive Touch controller (0x41 or 0x44)
  • TMP007 IR Temperature Sensor (0x40 - 0x47)
  • TMP006 IR Temperature Sensor (0x40 - 0x47)

0x45

  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • SHT31 Humidity/Temperature Sensor (0x44 or 0x45 selectable)
  • TMP007 IR Temperature Sensor (0x40 - 0x47)
  • TMP006 IR Temperature Sensor (0x40 - 0x47)

0x46

  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • TMP007 IR Temperature Sensor (0x40 - 0x47)
  • TMP006 IR Temperature Sensor (0x40 - 0x47)

0x47

  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • TMP007 IR Temperature Sensor (0x40 - 0x47)
  • TMP006 IR Temperature Sensor (0x40 - 0x47)

0x48

  • ADS1115 4-channel 16-Bit ADC (0x48 0x49 0x4A or 0x4B)
  • ADT7410 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • ATSAMD09 Breakout with seesaw (0x48-0x4B)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • PCF8591 Quad 8-Bit ADC + 8-Bit DAC (0x48 - 0x4F)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TMP102 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • TMP117 Temperature Sensor (0x48 0x49 0x4A or 0x4B)

0x49

  • ADS1115 4-Channel 16-Bit ADC (0x48 0x49 0x4A or 0x4B)
  • ADT7410 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • AS7262 Light/Color Sensor (0x49)
  • ATSAMD09 Breakout with seesaw (0x48-0x4B)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • PCF8591 Quad 8-Bit ADC + 8-Bit DAC (0x48 - 0x4F)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TMP102 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • TMP117 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • TSL2561 Light Sensor (0x29, 0x39 or 0x49)

0x4A

  • ADS1115 4-channel 16-Bit ADC (0x48 0x49 0x4A or 0x4B)
  • ADT7410 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • ATSAMD09 Breakout with seesaw (0x48-0x4B)
  • BNO085 9-DoF IMU (0x4A or 0x4B)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • PCF8591 Quad 8-Bit ADC + 8-Bit DAC (0x48 - 0x4F)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TMP102 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • TMP117 Temperature Sensor (0x48 0x49 0x4A or 0x4B)

0x4B

  • ADS1115 4-channel 16-Bit ADC (0x48 0x49 0x4A or 0x4B)
  • ADT7410 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • ATSAMD09 Breakout with seesaw (0x48-0x4B)
  • BNO085 9-DoF IMU (0x4A or 0x4B)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • PCF8591 Quad 8-Bit ADC + 8-Bit DAC (0x48 - 0x4F)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TMP102 Temperature Sensor (0x48 0x49 0x4A or 0x4B)
  • TMP117 Temperature Sensor (0x48 0x49 0x4A or 0x4B)

0x4C

  • Designer Systems pHAT-NBIOT multi-band LTE Cat NB1 module (0x4C)
  • EMC2101 Fan Controller (0x4C)
  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • PCF8591 Quad 8-Bit ADC + 8-Bit DAC (0x48 - 0x4F)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x30-0x37, 0x48-0x4F)

0x4D

  • Designer Systems pHAT-GSM pHAT-GSM quad-band GSM/GPRS module (0x4D)- INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • PCF8591 Quad 8-Bit ADC + 8-Bit DAC (0x48 - 0x4F)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)

0x4E

  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • PCF8591 Quad 8-Bit ADC + 8-Bit DAC (0x48 - 0x4F)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)

0x4F

  • INA219 High-Side DC Current/Voltage Sensor (0x40 - 0x4F)
  • INA260 Precision DC Current/Power Sensor (0x40 - 0x4F)
  • PCF8591 Quad 8-Bit ADC + 8-Bit DAC (0x48 - 0x4F)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
0x50 - 0x5F
  • 24LCxx series EEPROMs of various sizes and makes. Example: PC Monitor's EDID (0x50)
  • PCA9685. See "Special Cases"

0x50

  • Adafruit Mini I2C Gamepad with seesaw (0x50 - 0x53)
  • MB85RC FRAM (0x50 - 0x57)

0x51

  • Adafruit Mini I2C Gamepad with seesaw (0x50 - 0x53)
  • MB85RC FRAM (0x50 - 0x57)

0x52

  • Adafruit Mini I2C Gamepad with seesaw (0x50 - 0x53)
  • MB85RC FRAM (0x50 - 0x57)

  • Nintendo Nunchuck Controller (0x52 only)

    0x53

  • Adafruit Mini I2C Gamepad with seesaw (0x50 - 0x53)

  • ADXL343 3-Axis Accelerometer (0x1D or 0x53)

  • ADXL345 3-Axis Accelerometer (0x1D or 0x53)

  • LTR390 UV Sensor (0x53)

  • MB85RC FRAM (0x50 - 0x57)

0x54

  • MB85RC FRAM (0x50 - 0x57)

0x55

  • MB85RC FRAM (0x50 - 0x57)

0x56

  • MB85RC FRAM (0x50 - 0x57)

0x57

  • MB85RC FRAM (0x50 - 0x57)
  • MAX3010x Pulse & Oximetry Sensor (0x57)

0x58

  • AW9523 GPIO Expander and LED Driver (0x58 - 0x5B)
  • SGP30 Gas Sensor (0x58 only)
  • TPA2016 Class-D Audio Amplifier (0x58 only)

0x59

  • AW9523 GPIO Expander and LED Driver (0x58 - 0x5B)
  • SGP40 Gas Sensor (0x59 only)

0x5A

  • AW9523 GPIO Expander and LED Driver (0x58 - 0x5B)
  • MPR121 12-Point Capacitive Touch Sensor (0x5A, 0x5B, 0x5C, 0x5D)
  • CCS811 VOC Sensor (0x5A or 0x5B)
  • DRV2605 Haptic Motor Driver (0x5A only)
  • MLX9061x IR Temperature Sensor (0x5A only)

0x5B

  • AW9523 GPIO Expander and LED Driver (0x58 - 0x5B)
  • CCS811 VOC Sensor (0x5A or 0x5B)
  • MPR121 12-Point Capacitive Touch Sensor (0x5A, 0x5B, 0x5C, 0x5D)

0x5C

  • AM2315 Humidity/Temp Sensor (0x5C only)
  • AM2320 Humidity/Temp Sensor (0x5C only)
  • BH1750 Light Sensor (0x23 or 0x5C)
  • LPS22 Pressure Sensor (0x5C, 0x5D)
  • LPS25 Pressure Sensor (0x5C, 0x5D)
  • LPS33HW Ported Pressure Sensor (0x5C, 0x5D)
  • LPS35HW Pressure Sensor (0x5C, 0x5D)
  • MPR121 12-Point Capacitive Touch Sensor (0x5A, 0x5B, 0x5C, 0x5D)

0x5D

  • LPS22 Pressure Sensor (0x5C, 0x5D)
  • LPS25 Pressure Sensor (0x5C, 0x5D)
  • LPS33HW Ported Pressure Sensor (0x5C, 0x5D)
  • LPS35HW Pressure Sensor (0x5C, 0x5D)
  • MPR121 12-Point Capacitive Touch Sensor (0x5A, 0x5B, 0x5C, 0x5D)

0x5E

  • TLV493D 3-Axis Magnetometer (0x5E)

0x5F

  • HTS221 Humidity/Temperature Sensor (0x5F)
0x60 - 0x6F
  • PCA9685. See "Special Cases"

0x60

  • ATECC608 Cryptographic Co-Processor (0x60)
  • MCP4725A0 12-Bit DAC (0x60 or 0x61)
  • MCP4728 Quad DAC (0x60 only)
  • MCP9600 Temperature Sensor (0x60 - 0x67)
  • MPL115A2 Barometric Pressure (0x60 only)
  • MPL3115A2 Barometric Pressure (0x60 only)
  • Si5351A Clock Generator (0x60 or 0x61)
  • Si1145 Light/IR Sensor (0x60 only)
  • TEA5767 Radio Receiver (0x60 only)
  • VCNL4040 Proximity and Ambient Light Sensor (0x60 only)

0x61

  • MCP4725A0 12-Bit DAC (0x60 or 0x61)
  • MCP9600 Temperature Sensor (0x60 - 0x67)
  • Si5351A Clock Generator (0x60 or 0x61)
  • SCD30 Humidity/Temperature/CO2 Sensor (0x61)

0x62

  • MCP4725A1 12-Bit DAC (0x62 or 0x63)
  • MCP9600 Temperature Sensor (0x60 - 0x67)

0x63

  • MCP4725A1 12-Bit DAC (0x62 or 0x63)
  • MCP9600 Temperature Sensor (0x60 - 0x67)
  • Si4713 FM Transmitter with RDS (0x11 or 0x63)

0x64

  • MCP4725A2 12-Bit DAC (0x64 or 0x65)
  • MCP9600 Temperature Sensor (0x60 - 0x67)

0x65

  • MCP4725A2 12-Bit DAC (0x64 or 0x65)
  • MCP9600 Temperature Sensor (0x60 - 0x67)

0x66

  • MCP4725A3 12-Bit DAC (0x66 or 0x67)
  • MCP9600 Temperature Sensor (0x60 - 0x67)

0x67

  • MCP4725A3 12-Bit DAC (0x66 or 0x67)
  • MCP9600 Temperature Sensor (0x60 - 0x67)

0x68

This address is really popular with real time clocks, almost all of them use 0x68!

  • AMG8833 IR Thermal Camera Breakout (0x68 or 0x69)
  • DS1307 RTC (0x68 only)
  • DS3231 RTC (0x68 only)
  • ICM-20649 Accelerometer + Gyroscope (0x68 or 0x69)
  • ITG3200 Gyroscope (0x68 or 0x69)
  • MPU-9250 9-DoF IMU (0x68 or 0x69)
  • MPU-60X0 Accelerometer + Gyroscope (0x68 or 0x69)
  • PCF8523 RTC (0x68 only)

0x69

  • AMG8833 IR Thermal Camera Breakout (0x68 or 0x69)
  • ICM-20649 Accelerometer + Gyroscope (0x68 or 0x69)
  • ITG3200 Gyroscope (0x68 or 0x69)
  • MPU-9250 9-DoF IMU (0x68 or 0x69)
  • MPU-60X0 Accelerometer + Gyroscope (0x68 or 0x69)

0x6A

  • ICM330DHC 6-Axis IMU (0x6A or 0x6B)
  • L3GD20H Gyroscope (0x6A or 0x6B)
  • LSM6DS33 6-Axis IMU (0x6A or 0x6B)
  • LSM6DSOX 6-Axis IMU (0x6A or 0x6B)
  • LSM9DS0 9-Axis IMU (0x1D or 0x1E for Accel/Mag, 0x6A or 0x6B for Gyro)

0x6B

  • ICM330DHC 6-Axis IMU (0x6A or 0x6B)
  • L3GD20H Gyroscope (0x6A or 0x6B)
  • LSM6DS33 6-Axis IMU (0x6A or 0x6B)
  • LSM6DSOX 6-Axis IMU (0x6A or 0x6B)
  • LSM9DS0 9-Axis IMU (0x1D or 0x1E for Accel/Mag, 0x6A or 0x6B for Gyro)
0x70 - 0x7F
  • PCA9685 Shields, HATs, Breakouts, Wings etc - See "Special Cases"

0x70

  • HT16K33 LED Matrix Driver (0x70 - 0x77)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • SHTC3 Temp and Humidity Sensor (0x70)
  • TCA9548 1-to-8 I2C Multiplexer (0x70 - 0x77)

0x71

  • HT16K33 LED Matrix Driver (0x70 - 0x77)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TCA9548 1-to-8 I2C Multiplexer (0x70 - 0x77)

0x72

  • HT16K33 LED Matrix Driver (0x70 - 0x77)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TCA9548 1-to-8 I2C Multiplexer (0x70 - 0x77)

0x73

  • HT16K33 LED Matrix Driver (0x70 - 0x77)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TCA9548 1-to-8 I2C Multiplexer (0x70 - 0x77)

0x74

  • HT16K33 LED Matrix Driver (0x70 - 0x77)
  • IS31FL3731 144-LED CharliePlex driver (0x74 0x75 0x66 or 0x77)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TCA9548 1-to-8 I2C Multiplexer (0x70 - 0x77)

0x75

  • HT16K33 LED Matrix Driver (0x70 - 0x77)
  • IS31FL3731 144-LED CharliePlex driver (0x74 0x75 0x66 or 0x77)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TCA9548 1-to-8 I2C Multiplexer (0x70 - 0x77)

0x76

  • BME280 Temp/Barometric/Humidity (0x76 or 0x77)
  • BME680 Temp/Barometric/Humidity/Gas (0x76 or 0x77)
  • BMP280 Temp/Barometric (0x76 or 0x77)
  • BMP388 Temp/Barometric (0x76 or 0x77)
  • BMP390 Temp/Barometric (0x76 or 0x77)
  • DPS310 Barometric Sensor (0x76 or 0x77)
  • HT16K33 LED Matrix Driver (0x70 - 0x77)
  • IS31FL3731 144-LED CharliePlex driver (0x74 0x75 0x66 or 0x77)
  • MS5607/MS5611 Barometric Pressure (0x76 or 0x77)
  • MS8607 Temp/Barometric/Humidity (0x40 for Humidity and 0x76 for Barometric/Temperature)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TCA9548 1-to-8 I2C Multiplexer (0x70 - 0x77)

0x77

  • BMA180 Accelerometer (0x77 only)
  • BME280 Temp/Barometric/Humidity (0x76 or 0x77)
  • BME680 Temp/Barometric/Humidity/Gas (0x76 or 0x77)
  • BMP180 Temp/Barometric (0x77 only)
  • BMP085 Temp/Barometric (0x77 only)
  • BMP280 Temp/Barometric (0x76 or 0x77)
  • BMP388 Temp/Barometric (0x76 or 0x77)
  • BMP390 Temp/Barometric (0x76 or 0x77)
  • DPS310 Barometric Sensor (0x76 or 0x77)
  • HT16K33 LED Matrix Driver (0x70 - 0x77)
  • IS31FL3731 144-LED CharliePlex driver (0x74 0x75 0x66 or 0x77)
  • MS5607/MS5611 Barometric Pressure (0x76 or 0x77)
  • PCT2075 Temperature Sensor (0x28-0x2E, 0x48-0x4F, 0x70-0x77)
  • TCA9548 1-to-8 I2C Multiplexer (0x70 - 0x77)

0x78

  • Reserved for 10-bit I2C addressing

0x79

  • Reserved for 10-bit I2C addressing

0x7A

  • Reserved for 10-bit I2C addressing

0x7B

  • Reserved for 10-bit I2C addressing

0x7C

  • Reserved for future purposes

0x7D

  • Reserved for future purposes

0x7E

  • Reserved for future purposes

0x7F

  • Reserved for Future Purposes

Page last edited January 22, 2025

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