PCA9663B,118

The PCA9663B,118 from NXP Semiconductors is a fourth-generation I2C-bus controller designed for data-intensive transfers. It offers three independent I2C-bus channels, each capable of data rates up to 1 Mbits/s using Fast-mode Plus (Fm+).

Each channel is equipped with a substantial 4352-byte data buffer, totaling 13056 bytes of buffer space, making it ideal for applications requiring the transmission and reception of large amounts of serial data. The device functions as an 8-bit parallel-bus to I2C-bus protocol converter. It can communicate with up to 64 slaves on each channel in a single serial sequence without CPU intervention.

Key features include an onboard oscillator and PLL for clock generation, sequence looping with an interval timer, and support for SCL clock stretching. The controller and parallel bus interfaces operate at 3.3V, while the I2C-bus I/Os are 5V tolerant. The package is a 48-LQFP (7x7).

This controller is suitable for fault-tolerant applications where data refresh is critical, reducing CPU overhead. Error reporting is handled at transaction, channel, and controller levels with maskable interrupts for customization. An external trigger input allows data synchronization with external events.