However, not that many devices are available that can use it.ĬAN is very robust in an environment with high electromagnetic interference levels and has good error correction. It allows communication and the supply of power using just one wire or trace, using a parasitic power supply technique.

We have seen that in some applications, the use of termination resistors can be beneficial.ġ-Wire is great. SPI communication speeds are great, and in addition to that, it does not need any special termination impedance matching. SPI is a fast communication protocol that allows many slaves, although with an increase in the pin count. Also, we like that the data rate can be controlled by hardware and that the slave addresses are also set by hardware. However, the more devices you connect, the more you need to reduce the data rate to maintain operation. It allows many devices to be connected using just two pins. It is very useful for communication between two devices.

UART is quite a simple asynchronous serial communication, which allows full-duplex mode. Although serial communications are several orders of magnitude slower than the parallel option, the rates achieved are sufficient for most ICs and devices to perform the required information exchange or sending of commands. Serial communications buses allow the exchange of information between many devices and perform this communication using a much smaller pin count than needed for parallel communications. Serial communication protocols and standards are fantastic, especially with many smart digital or mixed (analog-digital) devices incorporating microcontrollers is popular. We hope this resource will prove valuable next time you find yourself needing to implement a serial communication bus, helping you choose the best option for your particular circumstances. Each article has covered one of the more popular protocols in common usage, and here, at the end of this series, we have summarized the advantages and disadvantages of each. In this series of articles, we’ve been looking at some of the different Serial Communication Protocols available to transfer information between microcontrollers, data-producing, data-processing peripherals, and other smart devices.

Serial communication types