Basic emulation of communication protocols involves the emulation or replicating the frames of the communication protocols using the port pins. This is useful when there is a particular need for a protocol inside a microcontroller where the required communication protocol is not present. The survey on emulation is suitable for the users to have a brief knowledge about the emulation before proceeding. This survey on emulation of communication protocols gives a brief information regarding the parameters, timing, and also the issues and problems faced during the emulation. A brief comparison was made with some different communication protocol emulation using a simple timer module. This will be helpful in concluding the behavior of each communication protocol on a simple timer module using which the protocol will be emulated.

Keywords : emulation, microcontroller, timer, port pins, communication protocol.