PCA9535PWR

The PCA9535PWR is a 16-pin I²C bus I/O port expander manufactured by NXP Semiconductors. It provides 16 additional GPIO (General Purpose Input/Output) pins to microcontrollers through the I²C interface, allowing for easy expansion of input and output capabilities. The device can operate at a voltage range of 1.8V to 5.5V, making it versatile for various applications.
The PCA9535PWR supports both input and output modes, with configurable interrupt functionality to alert microcontrollers when inputs change state. It features a 4-bit I²C address, allowing multiple devices to be connected on the same bus. This makes it suitable for applications requiring multiple sensors, switches, or other peripherals in constrained I/O environments.
Common uses include consumer electronics, industrial automation, and IoT devices, where additional I/O capability is needed without increasing the microcontroller's pin count. The PCA9535PWR is known for its reliability, low power consumption, and ease of integration into existing systems.

The PCA9535PWR is a 16-bit I/O port expander with an I2C interface, primarily designed for applications requiring additional GPIOs. Key features include:
1. 16-Bit I/O Expansion: Provides 16 additional GPIO pins, configurable as input or output.
2. I2C Interface: Supports fast-mode I2C (up to 1 MHz) for communication with microcontrollers.
3. Interrupt Capability: Generates interrupts on input state changes, allowing efficient monitoring of GPIOs.
4. Multiple Device Support: Up to 8 PCA9535 devices can be connected on the same I2C bus, increasing GPIO count.
5. Internal Pull-up Resistors: Integrated pull-up resistors for input pins facilitate easy interfacing with external devices.
6. Wide Operating Voltage: Operates at a voltage range of 1.65V to 5.5V, making it suitable for various applications.
7. Low Power Consumption: Designed for low-power operation, ideal for battery-operated devices.
8. Configurable Interrupts: Allows individual pin interrupt configuration for enhanced flexibility.
This integration of features makes the PCA9535PWR suitable for various applications, including embedded systems and consumer electronics.

The PCA9535PWR is available in a TSSOP-16 (Thin Shrink Small Outline Package) format.

The PCA9535PWR is a 16-pin I2C I/O port expander. It features the following pin count and functions:
- Pins: 16
- Functionality:
- VDD (Pin 1): Supply voltage (typically 2.3V to 5.5V).
- GND (Pin 8): Ground.
- SDA (Pin 2): I2C data line.
- SCL (Pin 3): I2C clock line.
- INT (Pin 4): Interrupt output for indicating changes on input pins.
- P0-P7 (Pins 5-7, 9-11): Configurable GPIO (general-purpose input/output) pins (8 total) that can be used as inputs or outputs.
- A0, A1 (Pins 12-13): Address selection pins to set the I2C address of the device (up to 4 different addresses).
- RESET (Pin 14): Active-low reset input to initialize the device.
The PCA9535PWR allows for remote I/O expansion via the I2C bus, making it useful in various applications such as LED control and sensor interfacing.

The PCA9535PWR is manufactured by NXP Semiconductors, a global semiconductor company that specializes in designing and supplying a wide range of integrated circuits (ICs) and system solutions. Founded in 2006 as a spin-off from Philips, NXP focuses on automotive, industrial, and Internet of Things (IoT) applications. The company is recognized for its expertise in secure connectivity and processing solutions, catering to various sectors including automotive, mobile, and consumer electronics. NXP's products include microcontrollers, processors, RF solutions, and mixed-signal devices, with an emphasis on innovation and high-performance technology.

The PCA9535PWR is an I2C I/O port expander with 16 GPIO pins. It is commonly used in applications such as remote control systems, LED displays, industrial automation, and consumer electronics. Its ability to increase the number of I/O pins allows for interfacing with multiple devices, enhancing connectivity in projects like sensor arrays and keypad inputs. Additionally, it can be employed in embedded systems for expanding functionality while conserving microcontroller resources.

Equivalent products to the PCA9535PWR chip include the MCP23017, PCF8575, and TCA9555. These devices are I2C I/O port expanders with similar functionalities, supporting multiple GPIOs and addressing schemes. Always check specific features like voltage levels and pin configurations for compatibility.