ADXL343 - Triple-Axis Accelerometer (+-2g/4g/8g/16g) w/ I2C/SPI

Analog Devices ADXL343 triple-axis accelerometer with selectable ±2/4/8/16g range, I2C and SPI interfaces. Near-drop-in replacement for the ADXL345.

Logical pinout · physical placement not verified

One grouped connection is listed in the table but omitted from the graphic until individual pins are available.

VINPower pins
Input to 3.3V regulator and logic-level reference.
Type · Power
3V3Power pins
3.3V regulator output.
Type · Power
GNDPower pins
Common ground connection.
Type · Ground
SCLI2C pins
I2C clock line.
Type · I2C
SDAI2C pins
I2C data line.
Type · I2C
SCKSCLSPI pins
SPI clock when used in SPI mode.
Type · I2C, SPI
SDISDASPI pins
SPI MOSI when used in SPI mode.
Type · I2C, SPI
SDOALT ADDROther pins
SPI MISO, also I2C alternate address select.
Type · SPI
CSSPI pins
SPI chip select.
Type · SPI
INT1Interrupt pins
Interrupt output 1.
Type · GPIO
INT2Interrupt pins
Interrupt output 2.
Type · GPIO

Pin	Position	Type	Function
VIN	Power pins	Power	Input to 3.3V regulator and logic-level reference.
3V3	Power pins	Power	3.3V regulator output.
GND	Power pins	Ground	Common ground connection.
SCL	I2C pins	I2C	I2C clock line.
SDA	I2C pins	I2C	I2C data line.
SCKSCL	SPI pins	I2C, SPI	SPI clock when used in SPI mode.
SDISDA	SPI pins	I2C, SPI	SPI MOSI when used in SPI mode.
SDOALT ADDR	Other pins	SPI	SPI MISO, also I2C alternate address select.
CS	SPI pins	SPI	SPI chip select.
INT1	Interrupt pins	GPIO	Interrupt output 1.
INT2	Interrupt pins	GPIO	Interrupt output 2.

Logical pinout · physical placement not verified

One grouped connection is omitted from the graphic until individual pins are available.

Pin details

11 connections

VIN
Input to 3.3V regulator and logic-level reference.
Power
Power pins
3V3
3.3V regulator output.
Power
Power pins
GND
Common ground connection.
Ground
Power pins
SCL
I2C clock line.
I2C
I2C pins
SDA
I2C data line.
I2C
I2C pins
SCKSCL
SPI clock when used in SPI mode.
I2C, SPI
SPI pins
SDISDA
SPI MOSI when used in SPI mode.
I2C, SPI
SPI pins
SDOALT ADDR
SPI MISO, also I2C alternate address select.
SPI
Other pins
CS
SPI chip select.
SPI
SPI pins
INT1
Interrupt output 1.
GPIO
Interrupt pins
INT2
Interrupt output 2.
GPIO
Interrupt pins

Start wiring

I2C · SPI · Analog · 3.3 – 5 V · Breakout

Confirm the data interface matches your host board.

Module pins: VIN, 3V3, GND, SCL, SDA, SCK/SCL, SDI/SDA, SDO/ALT ADDR. Schematik maps them to your board in the app.

IMU & motion

88 other options

Analog accelerometers, 6-DoF accel/gyro chips, 9-DoF combos, on-chip-fusion IMUs and standalone magnetometers — about 90 listings from the ADXL335 to the ICM-20948.

View all 88

Related groups

4 groups

Biometrics

UART/I2C fingerprint modules, MAX30102 PPG breakouts, and analog ECG/EMG front-ends for access control and hobby biometric sensing.

Sensors · Biometric sensors · 26 parts

Cameras

Pi CSI modules, USB cameras, MCU-class OV2640/OV5640 boards, on-camera AI like HuskyLens and OpenMV, and thermal or ToF imagers — over 130 listings across very different pipelines.

Sensors · Cameras & vision · 141 parts

Power monitors

INA-series I2C monitors, Hall-effect sensors like the ACS723 and Gravity 20A/50A boards, and non-invasive CT clamps for everything from 3.3V rail telemetry to mains current sensing.

Sensors · Current & voltage · 25 parts

Distance sensors

About 180 listings spanning VL53-series ToF breakouts, HC-SR04 and MaxSonar ultrasonics, 360° triangulation LiDARs, IR proximity sensors, 24GHz mmWave presence detection and laser break-beam sensors.

Sensors · Distance sensors · 177 parts