NXP PCA9564APW I²C-bus Controller

The NXP PCA9564APW is a parallel-bus to I²C-bus protocol converter and interface chip, designed to provide a seamless communication bridge between a host microcontroller and an I²C-bus. This versatile component is ideal for applications where the microcontroller does not have an I²C-bus interface or where additional I²C-bus ports are needed.

Encased in a TSSOP28 package, the PCA9564APW operates over a wide temperature range, making it suitable for various industrial and commercial environments. With its built-in oscillator, no external components are required for its clock generation, simplifying the design and reducing the overall bill of materials.

One of the key features of the PCA9564APW is its ability to operate at different I²C-bus speeds, including the standard mode (100 kHz), the fast mode (400 kHz), and the high-speed mode (3.4 MHz). This flexibility ensures compatibility with a wide range of I²C devices and systems. Additionally, the device supports both 7-bit and 10-bit addressing modes on the I²C-bus, further enhancing its adaptability to different I²C specifications.

The PCA9564APW is equipped with an interrupt output that can be utilized to indicate the completion of I²C-bus transactions, simplifying the task of the host controller by reducing the need for constant polling. Moreover, the device's parallel bus can be set up in either an 8-bit or 16-bit configuration, providing versatility for interfacing with a variety of microcontrollers or processors.

With its low standby current, the PCA9564APW is also an energy-efficient choice for power-sensitive applications. Its robust design includes features like noise filtering on the SDA/SCL lines and a fail-safe I²C-bus configuration that ensures the bus is not stuck in an undefined state, enhancing system reliability.

Overall, the NXP PCA9564APW is an excellent choice for expanding I²C-bus connectivity in embedded systems, offering ease of integration, flexibility, and reliability for engineers and developers working on a broad range of applications.