Electronic shelf label and method of controlling the same

There are provided an electronic shelf label and a method of controlling the same. The electronic shelf label according to an embodiment of the present invention includes: a power supply unit supplying driving power; an interrupt signal generation unit generating an interrupt signal using an input signal from the outside; and a processor unit generating display information depending on the interrupt signal, wherein the processor unit controls the power supply unit depending on the interrupt signal to determine whether to supply the driving power to the interrupt signal generation unit or interrupt the driving power.