ON Semiconductor PCA9535ECDWR2G: 16-Bit I/O Expander

The PCA9535ECDWR2G is a highly versatile 16-bit I/O (Input/Output) expander from ON Semiconductor, designed to provide additional I/O capabilities to microcontrollers when the number of available pins is limited. This integrated circuit utilizes the I²C bus interface, which allows for easy integration into most embedded systems with minimal footprint.

Featuring two 8-bit Configuration, Input, Output, and Polarity Inversion registers, this device enables individual pin configuration. This allows each port to be configured as an input or output without the need for external pull-up resistors, thanks to the built-in weak pull-up resistor. The PCA9535ECDWR2G is particularly suitable for applications where I/O expansion is necessary, such as in servers, personal computers, robotics, and industrial automation.

Key Features:

• Expansive I/O: Provides 16 additional I/O pins, divided into two 8-bit ports.
• I²C Interface: Features a fast I²C interface with a 400 kHz clock rate, facilitating easy communication with the host controller.
• Low Standby Current: Offers an extremely low standby current, making it suitable for battery-powered and power-sensitive applications.
• Wide Operating Voltage: Operates across a wide voltage range from 2.3V to 5.5V, providing flexibility for various system voltages.
• Interrupt Output: Includes an interrupt output which can be connected to the interrupt logic of the microcontroller, informing when an input state has changed.
• Software Reset: Features a software reset input that allows the device to be reset through I²C bus commands.

The PCA9535ECDWR2G comes in a surface-mount package and is designed with ON Semiconductor's high-quality standards, ensuring reliable performance in a wide range of environmental conditions. Whether you're looking to expand the I/O capabilities of your system or implement complex input/output configurations, the PCA9535ECDWR2G is an excellent choice that combines functionality, reliability, and ease of use.