PCAL6416AHF,128

The PCAL6416AHF,128 is an I/O expander integrated circuit (IC) manufactured by NXP Semiconductors. It provides additional input/output (I/O) pins to a microcontroller or other digital devices, expanding their capability to interface with external sensors, switches, LEDs, and other peripherals.

Key Features:

• I²C Interface: Supports communication via the Inter-Integrated Circuit (I²C) protocol, allowing easy integration with microcontrollers and other I²C-compatible devices.
• 16-Bit I/O Expander: Provides 16 additional general-purpose I/O pins for interfacing with external devices.
• Programmable Configuration: Allows configuration of each I/O pin as input, output, or input with pull-up resistor through software.
• Interrupt Output: Includes interrupt functionality to signal the microcontroller of input status changes, reducing the need for continuous polling.
• Low Standby Current: Features low standby current consumption for power-efficient operation in battery-powered devices.
• Schmitt Trigger Inputs: Offers Schmitt trigger inputs for improved noise immunity and signal integrity.
• Wide Voltage Range: Supports a wide voltage range, enabling compatibility with various microcontroller and system voltage levels.

Applications:

• Embedded Systems: Used in embedded systems and microcontroller-based designs to expand the number of available I/O pins for interfacing with peripherals.
• Keypad Scanning: Applied in keypad scanning applications to interface with matrix keypads and detect key presses.
• LED Control: Integrated into LED control circuits to drive and control multiple LEDs with limited microcontroller pins.
• Sensor Interfaces: Employed in sensor interface circuits to interface with various sensors such as temperature sensors, light sensors, and proximity sensors.
• Industrial Automation: Deployed in industrial automation systems for monitoring and controlling external devices and sensors.