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SX1509QBIULTRT +BOM

I/O Expander 16 I2C 400 kHz 28-QFN-UT (4x4)

Manufacturer:

Semtech Corporation
Mfr.Part #:

SX1509QBIULTRT
Datasheet:

SX1509QBIULTRT Datasheet (PDF)
Pin Count:

29
Released Date:

Nov 13, 2019
Last Modified Date:

Mar 7, 2023 4:10 PM UTC
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SX1509QBIULTRT General Description

The SX1509QBIULTRT is a member of the SX1509 family, which is known for its I/O expanders with features like GPIO control, LED drivers, and keypad scanning. These ICs are designed to provide additional digital I/O and control capabilities for microcontrollers and embedded systems.

Key Features

GPIO Expansion: The SX1509QBIULTRT offers multiple digital I/O pins that can be used to expand the number of available GPIOs in a microcontroller or system.
LED Drivers: It features LED drivers with PWM (Pulse Width Modulation) control, making it suitable for applications involving LED lighting or display control.
Keypad Scanning: The IC includes features for scanning and detecting keypad key presses, which is valuable in applications that involve user interfaces and input devices.
Integrated Clock: Some members of the SX1509 family include an internal oscillator, reducing the need for an external clock source.
Low Power: These ICs are often designed to operate at low power to minimize energy consumption in battery-powered applications.
I2C Interface: The SX1509QBIULTRT typically communicates with a microcontroller via the I2C (Inter-Integrated Circuit) interface, which simplifies interfacing and control.
Interrupt Support: The IC can generate interrupts to the microcontroller based on events or conditions, which can be useful for real-time applications.
Operating Voltage: The operating voltage range may vary depending on the specific model, so it's important to check the datasheet for precise details.

Application

I/O Expansion: They are used to expand the number of available digital I/O pins on microcontrollers, making them suitable for systems that require more I/O ports than the microcontroller provides.
LED Lighting Control: The integrated LED drivers and PWM control make these ICs ideal for LED lighting control applications, such as dimming and color control.
Keypad and Button Interfaces: They can be used for creating user interfaces with buttons and keypads, often used in consumer electronics and industrial control systems.
Sensor Interface: These ICs can be used to interface with various sensors, including capacitive touch sensors, providing a bridge between sensors and the microcontroller.
Home Automation: In home automation systems, these ICs can help control and monitor devices and sensors throughout a smart home.
IoT (Internet of Things): IoT devices often use GPIO expanders to interface with sensors and control external devices.