Adafruit AW9523 GPIO Expander and LED Driver Breakout

Name: Adafruit AW9523 GPIO Expander and LED Driver Breakout
Brand: Adafruit
SKU: 4886

AW9523 I2C breakout providing 16 GPIO pins that can individually function as push-pull outputs, open-drain outputs, inputs, or constant-current LED drivers. Configurable I2C address via solder jumpers.

Logical pinout · physical placement not verified

One grouped source record is expanded into separate logical pads where unambiguous; physical placement is not implied.

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 · UnknownVoltage · I2C connector follows board power/logic level.
0-15
AW9523 GPIO expander pins for LED current-source dimming or GPIO input/output. Adafruit notes no internal pull-ups or pull-downs.
Type · GPIO
INT
Interrupt output pin that can alert when an input value changes.
Type · Signal
RST
Hardware reset input, set low to reset. Adafruit notes a 10kΩ pull-up resistor.
Type · Control
A0A1 jumpers
I2C address configuration jumpers: default 0x58, A0 shorted 0x59, A1 shorted 0x5A, both shorted 0x5B.
Type · Analog, Control

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	Unknown	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	Signal	Interrupt output pin that can alert when an input value changes.
RST	Control	Hardware reset input, set low to reset. Adafruit notes a 10kΩ pull-up resistor.
A0A1 jumpers	Analog, Control	I2C address configuration jumpers: default 0x58, A0 shorted 0x59, A1 shorted 0x5A, both shorted 0x5B.

Logical pinout · physical placement not verified

One grouped source record is expanded into separate logical pads where unambiguous; physical placement is not implied.

Pin details

9 connections

VIN
Board power input, use the same power as the microcontroller logic level.
PowerVoltage · 3V to 5V logic-level board power, per Adafruit Learn.
GND
Common ground for power and logic.
GroundVoltage · 0V
SCL
I2C clock line to the host microcontroller.
I2CVoltage · Host I2C logic level.
SDA
I2C data line to the host microcontroller.
I2CVoltage · Host I2C logic level.
STEMMA QT
STEMMA QT/Qwiic I2C connector for compatible boards and accessories.
UnknownVoltage · I2C connector follows board power/logic level.
0-15
AW9523 GPIO expander pins for LED current-source dimming or GPIO input/output. Adafruit notes no internal pull-ups or pull-downs.
GPIO
INT
Interrupt output pin that can alert when an input value changes.
Signal
RST
Hardware reset input, set low to reset. Adafruit notes a 10kΩ pull-up resistor.
Control
A0A1 jumpers
I2C address configuration jumpers: default 0x58, A0 shorted 0x59, A1 shorted 0x5A, both shorted 0x5B.
Analog, Control

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