Memory device for controlling write recovery about cas latency

The present invention is to provide a memory device that can be adjusted according to the frequency of the operation clock the write recovery time from a memory device having a CAS latency mode, the CAS latency control signal in the present invention corresponding to the set CAS latency mode for this purpose CAS latency mode detecting means for outputting; And in response to the automatic free the execution timing of the charge operation CAS latency control signal and provides the memory device with the auto precharge control means for regulating. Semiconductors, memory, light recovery time, precharge, CAS latency.