PCA9532PW

The PCA9532PW is a 16-bit I2C-bus and SMBus I/O expander optimized for dimming control of 16 LEDs in a backlighting application. It provides two hardware programmable LED dimming states and an additional blink mode for LED drivers. With its integrated programmable logic, it offers flexibility for various LED control applications.

Pinout

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

• A0: Device Address LSB (I2C)
• A1: Device Address MSB (I2C)
• P0-P7: 8-Bit I/O Port
• SDA: Serial Data Input/Output (I2C)
• SCL: Serial Clock Input (I2C)
• VDD: Power Supply Voltage
• GND: Ground

Circuit Diagram

An illustrative circuit diagram showcasing the connections and operation of the PCA9532PW for visual representation.

Key Features

• 16-Bit I/O Expander: Provides 16 I/O pins for flexible LED control and general-purpose input/output (GPIO) expansion.
• Two Programmable LED Dimming States: Allows hardware control of LED dimming for customized backlighting applications.
• Blink Mode: Supports an additional blink mode for LED drivers, enabling creative LED control options.
• Integrated Programmable Logic: Offers programmable control for versatile LED dimming and blinking functionalities.
• I2C-Bus and SMBus Compatible: Compatible with industry-standard I2C and SMBus communication protocols for easy integration.

Note: For detailed technical specifications, please refer to the PCA9532PW datasheet.

Application

• LED Backlighting: Ideal for LED dimming control and blink mode applications in display backlighting systems.
• General-Purpose I/O Expansion: Suitable for expanding I/O capabilities in various embedded systems and digital applications.
• Customized LED Control: Provides flexibility for customized LED control in creative lighting and display designs.

Functionality

The PCA9532PW is designed for LED dimming control and I/O expansion with flexible programmable features, making it a versatile solution for LED backlighting and general-purpose I/O applications.

Usage Guide

• Power Supply: Connect VDD (Pin 6) to the power supply voltage and GND (Pin 7) to the ground.
• I2C/SMBus Connections: Connect SDA (Pin 4) to the serial data line and SCL (Pin 5) to the serial clock line for I2C/SMBus communication.
• LED Connections: Interface the LED dimming control and blink mode logic with the P0-P7 pins for LED control.

Frequently Asked Questions

Q: Can the PCA9532PW control other types of devices besides LEDs?
A: Yes, the PCA9532PW can be used for general-purpose I/O expansion, allowing control of various digital devices beyond LEDs.

Q: Is the blink mode programmable in the PCA9532PW?
A: The blink mode in the PCA9532PW is hardware programmable to provide customizable blink patterns for LED drivers.