Apparatus and method for operating non-volatile memory according to priority

An apparatus and a method for processing operations of a non-volatile memory according to priority are provided to reduce response time and prevent that stop and restart of operations having lower priority are frequently generated when operations having higher priority are requested while the operations having the lower priority is performed. A first time calculator(120) calculates a remained closing time of a second work if the second work having priority higher than a first work is requested during a first operation of the first work. A second time calculator(130) calculates a remained operation time of the first operation and a remained execution time of the second work. A controller(150) determines whether stop the first operation is stopped or not by comparing the times calculated in the first and second time calculators.