Standard mode: I2C in this mode goes up to the speed of 100 kilobits per second. Fast mode: The maximum speed is 400 kilobits per second for this mode. Both the above modes are widely supported. Fast ...

The third pitfall pertains to the higher-speed modes of I2C, including Fast-Mode (FM) and Fast-Mode Plus (FM+). Backward compatibility with these higher speed versions is absent to spotty.

This affects, and sometimes, if you have choice between I2C and some other interface, speed might be a deciding factor. For example, take SSD1306 or SH1106 OLED screens – they can be connected ...

While SPI is less flexible than I2C, it offers faster, lower-latency communication, making it the preferred choice for scenarios where speed is critical, such as in automotive systems or flash memory ...