SX1502I087TRT

The SX1502I087TRT is a low-voltage, I2C-controlled GPIO (General Purpose Input/Output) expander from Semtech. It provides additional digital I/O pins that can be controlled via the I2C interface, allowing for flexible expansion of I/O capabilities in a variety of applications, including consumer electronics, industrial automation, and IoT devices.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• VCC: Power Supply
• GND: Ground
• SDA: I2C Serial Data
• SCL: I2C Serial Clock
• GPIO0-GPIO7: General Purpose Input/Output Pins

Circuit Diagram

Incorporate a circuit diagram that illustrates the connections and operation of the SX1502I087TRT GPIO expander for a more visual representation.

Key Features

• I2C Interface: The SX1502I087TRT communicates with the host microcontroller or SoC (System-on-Chip) via the I2C interface, simplifying the control of additional GPIO pins.
• Multiple GPIO Pins: It provides 8 additional GPIO pins, which can be configured as inputs or outputs, allowing for versatile I/O expansion.
• Low Standby Current: The SX1502I087TRT features low standby current consumption, making it suitable for battery-powered applications.
• Interrupt Output: It supports interrupt functionality, allowing the host to be notified when a change occurs on any of the GPIO pins.
• Wide Operating Voltage Range: The device operates from 1.65V to 5.5V, making it compatible with a wide range of microcontrollers and SoCs.
• Small Package: The SX1502I087TRT is available in a small, space-saving package, making it suitable for compact designs.

Note: For detailed technical specifications, refer to the SX1502I087TRT datasheet.

Application

The SX1502I087TRT can be used in a variety of applications, including:

• Smartphones and Tablets: for controlling external peripherals and sensors.
• Industrial Automation: for expanding I/O capabilities in industrial control systems.
• IoT Devices: for adding additional GPIO pins to microcontroller-based IoT devices.

Functionality

The SX1502I087TRT GPIO expander provides an easy and cost-effective way to increase the number of available GPIO pins in a system, allowing for greater flexibility in design and functionality.

Usage Guide

• Connect VCC (Power Supply Pin) to the appropriate power supply voltage and GND (Ground Pin) to ground.
• Connect SDA (Serial Data) and SCL (Serial Clock) to the corresponding I2C bus pins on the host microcontroller or SoC.
• Configure the GPIO pins as inputs or outputs using the I2C interface and control registers.
• Use the interrupt output to detect and respond to changes on the GPIO pins.

Frequently Asked Questions

Q: What is the maximum current that can be sourced/sinked per GPIO pin?

A: The maximum current per GPIO pin is typically 8 mA, but please refer to the datasheet for precise details.

Q: Can the SX1502I087TRT be used in 5V systems?

A: Yes, the SX1502I087TRT is compatible with 5V systems, as it operates from 1.65V to 5.5V.

Q: Does the SX1502I087TRT support hardware addressing for multiple devices on the I2C bus?

A: Yes, the SX1502I087TRT supports hardware addressing, allowing for multiple devices to be connected to the same I2C bus.

Q: What is the maximum I2C bus speed supported by the SX1502I087TRT?

A: The SX1502I087TRT supports I2C bus speeds up to 400 kHz, depending on the operating voltage and other factors.