A display driving circuit includes a command sync controller, a command pre-buffer and a command register. The command sync controller generates a first sync signal based on an external signal. The command pre-buffer stores a first command. The command register stores the first command provided from the command pre-buffer. The first sync signal is provided both to the command pre-buffer and to an external device of the display driving circuit. The command pre-buffer provides, in response to the first sync signal, the first command stored in the command pre-buffer to the command register.