Adafruit AW9523 GPIO Expander and LED Driver Breakout

Expand your project possibilities, with the Adafruit AW9523 GPIO Expander and LED Driver Breakout - a cute and powerful I2C expander with a lot of tricks up its sleeve.

VIN
Board power input, use the same power as the microcontroller logic level.
Type · powerVoltage · 3V to 5V logic-level board power, per Adafruit Learn.
GND
Common ground for power and logic.
Type · groundVoltage · 0V
SCL
I2C clock line to the host microcontroller.
Type · i2cVoltage · Host I2C logic level.
SDA
I2C data line to the host microcontroller.
Type · i2cVoltage · Host I2C logic level.
STEMMA QT
STEMMA QT/Qwiic I2C connector for compatible boards and accessories.
Type · connectorVoltage · I2C connector follows board power/logic level.

Start wiring

I2C · SPI · 3V to 5V logic-level board power, per Adafruit Learn. · 0V

Confirm the data interface matches your host board.

Module pins: VIN, GND, SCL, SDA, 0-15. Schematik maps them to your board in the app.

Related groups

4 groups

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MCUs and boards

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Pin	Type	Function	Voltage
VIN	power	Board power input, use the same power as the microcontroller logic level.	3V to 5V logic-level board power, per Adafruit Learn.
GND	ground	Common ground for power and logic.	0V
SCL	i2c	I2C clock line to the host microcontroller.	Host I2C logic level.
SDA	i2c	I2C data line to the host microcontroller.	Host I2C logic level.
STEMMA QT	connector	STEMMA QT/Qwiic I2C connector for compatible boards and accessories.	I2C connector follows board power/logic level.
0-15	gpio	AW9523 GPIO expander pins for LED current-source dimming or GPIO input/output. Adafruit notes no internal pull-ups or pull-downs.
INT	interrupt	Interrupt output pin that can alert when an input value changes.
RST	reset	Hardware reset input, set low to reset. Adafruit notes a 10kΩ pull-up resistor.
A0 / A1 jumpers	configuration	I2C address configuration jumpers: default 0x58, A0 shorted 0x59, A1 shorted 0x5A, both shorted 0x5B.

Pinout

Start wiring

Connectors

Displays

Air quality

MCUs and boards