That is, you can use a single I2C address pin for each device as a chip select signal just like you would have with SPI. That’s it, really. [Marv G] goes through all of the other possible ...

A small I2C chip can help you get more GPIOs for your MCU or CPU, or a multi-channel motor driver, or a thermal camera, or a heap of flash memory; if you’re adding some sort of cool chip onto ...