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The NXP Semiconductors PCA9555N,112 is an Integrated Circuits (ICs) device specifically known as an I/O Expander. It belongs to the PCA9555 series, and it provides general-purpose remote I/O expansion for most microcontroller families via the I²C-bus interface. Functions: 1. 16-bit remote I/O port for I²C bus. 2. Logic levels: VDD range from 2.3 V to 5.5 V. 3. Active LOW logic for register addresses, control bits, and port status. Applications: - Industrial automation - Telecommunications - Consumer electronics - Automotive settings Alternative Components: - MCP23017 from Microchip - TCA9554 from Texas Instruments - MAX7317 from Maxim Integrated Embedded Modules: There are no specific embedded modules mentioned for this IC, as it can be directly interfaced with various microcontroller families. Related Q&A: 1. What is the maximum data rate supported by the PCA9555N,112 IC? The PCA9555N,112 supports a maximum I²C-bus data rate of 400 kHz. 2. Can multiple PCA9555N,112 chips be connected to a single microcontroller? Yes, multiple PCA9555N,112 chips can be connected to a single microcontroller using unique 7-bit slave addresses. 3. What are the typical power requirements for operating the PCA9555N,112? The PCA9555N,112 operates within a VDD range of 2.3 V to 5.5 V, making it compatible with a wide range of microcontrollers. 4. Does the PCA9555N,112 have built-in interrupt capabilities? Yes, the PCA9555N,112 features interrupt output that can be configured to alert the microcontroller of input changes on the I/O ports. 5. How many GPIO pins can be controlled by a single PCA9555N,112 chip? The PCA9555N,112 provides 16 GPIO pins that can be individually controlled as inputs or outputs based on configuration registers.