A delay locked loop includes a delay amount setting unit configured to set a delay amount of an external clock signal, a coarse delay unit configured to primarily delay the external clock signal by the set delay amount based on a first unit duration which is a unit delay amount of the coarse delay unit; and a fine delay unit configured to secondarily finely delay the primarily delayed clock signal based on a second unit duration, which is a unit delay amount of the fine delay unit and smaller than the first unit duration.