I²C Controller, SPI Interface, TSSOP-28.
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The PCA9665BS is an I²C bus controller manufactured by NXP Semiconductors. This device facilitates communication between a host microcontroller and peripheral devices via the I²C serial interface. It also provides a SPI interface for connection to a host processor. The component is packaged in a TSSOP-28.
This I²C controller is typically used in systems requiring communication between a host processor and multiple I²C peripherals. Its SPI interface allows for easy integration with a variety of microcontrollers in embedded systems.