An image forming apparatus and a method of controlling the same which may prevent brokenness of data displayed on a display are provided. The image forming apparatus performs a read operation on data previously stored at a specific address of a storage unit of an LCD module or on data stored through a write operation. The image forming apparatus compares data acquired through the read operation and known data. If the data acquired through the read operation and the known data are different, the image forming apparatus adjusts a setup time of an enable signal to prevent brokenness of data due to incorrect timing of the enable signal.