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AW9539TSR-Q1

AW9539-Q1 16-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers

Datasheet :
Preview - AW9539TSR-Q1 - Datasheet
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Product details

Channel 16
Addresses 4
Reset √
Constant Current √
Pull-up ×
Level Shift ×
Temperature -40℃~125℃
Power Supply (Min) (V) 1.65
Power Supply (Max) (V) 5.5
Package (mm) TSSOP-24L
TSSOP-24L
1 Full automotive qualification AEC-Q100 Grade1 2 16-bit I/O expander 3 I2C bus and SMBus compatible 4 Open-drain active-low interrupt output 5 400kHz I2C interface 6 1.65V~5.5V power supply 7 Configurable slave address with 2 address pins 8 Polarity inversion register 9 Low standby current consumption of 0.7μA (typical at 3.3V VCC) 10 No glitch on power-up 11 5.5V tolerant I/O ports 12 Noise filter on SCL/SDA inputs 13 Latched outputs with high-current drive capability for directly driving LEDs 14 Each I/O can be configured as an input or an output independently, default input 15 Operation temperature range: -40°C~125°C 16 Package: TSSOP-24L
AW9539TSR-Q1 is a 16-bit I/O expander that can be controlled through the I2C bus. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface. The AW9539TSR-Q1 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low operation) registers. At power on, all the 16 I/O ports are configured as inputs. The system master can configure each I/O as an input or an output independently by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input or Output register. The Polarity Inversion register can invert the polarity of the Input Port register. The AW9539TSR-Q1 open-drain interrupt output is activated when any input state differs from its corresponding input port register state and is used to indicate to the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine. The AW9539TSR-Q1 has a hardware RSTN pin that can be used to reset the device to its default state. Two hardware pins (A0, A1) vary the fixed I2C-bus address and allow up to four devices to share the same I2C-bus/SMBus. All I/O pins are 5.5V tolerant.

Technical documentation
Type
Title
Date
Datasheet DS_AW9539TSR-Q1_EN_V1.1   2025-05-30
Product Design Guide AW95xx Software Design Guide   2025-07-23

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

Evaluation board

AW9555_9535_9539_EVB_V1.0 — AW9555_9535_EVB_V1.0 is evaluation board for 16-bit I2C and SMBus I/O expanders with interrupt output and configuration registers. It provides general-purpose remote I/O expansion for most microcontroller series through the I2C interface.

EVB evaluation board for 16-bit I2C and SMBus I/O expanders.

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Software development

DRIVER OR LIBRARY

AW95XX_Driver — MCU Driver for AW95XX

MCU driver for AW95XX series，includeing sample code,porting guide.

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DRIVER OR LIBRARY

AW95XX_Drivers — Android and other drivers for AW95XX series

Android and other drivers for AW95XX series, including example code, porting guide, debugging guide, etc

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APPLICATION SOFTWARE&FRAMEWORK

AW95XX_GUI — AW95XX Tunning Tool

AW95XX GUI is a highly integrated and easy-to-use tool for product configuration and debugging. Intuitive interface and use-friendly operation can help customers shorten development time and complete system integration quickly.

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Hardware development

Evaluation board

AW9555_9535_9539_EVB_V1.0 — AW9555_9535_EVB_V1.0 is evaluation board for 16-bit I2C and SMBus I/O expanders with interrupt output and configuration registers. It provides general-purpose remote I/O expansion for most microcontroller series through the I2C interface.

EVB evaluation board for 16-bit I2C and SMBus I/O expanders.

View options
Software development

DRIVER OR LIBRARY

AW95XX_Driver — MCU Driver for AW95XX

MCU driver for AW95XX series，includeing sample code,porting guide.

View options

DRIVER OR LIBRARY

AW95XX_Drivers — Android and other drivers for AW95XX series

Android and other drivers for AW95XX series, including example code, porting guide, debugging guide, etc

View options

APPLICATION SOFTWARE&FRAMEWORK

AW95XX_GUI — AW95XX Tunning Tool

AW95XX GUI is a highly integrated and easy-to-use tool for product configuration and debugging. Intuitive interface and use-friendly operation can help customers shorten development time and complete system integration quickly.

View options