METHOD FOR CONTROLLING AUTO PRECHARGE START TIME OF DRAM

摘要

PURPOSE: A method for controlling an auto precharge start time of a DRAM is provided, which controls the auto precharge start time of the DRAM by being synchronized to a frequency. CONSTITUTION: According to the method for controlling the auto precharge start time of a DRAM, tRAS or tWR of the above DRAM is converted into a unit clock cycle according to CAS latency of the above DRAM. Then, the auto precharge start time of the DRAM is controlled by being synchronized to the converted clock cycle. The above tRAS is a row active time, and the tWR is a minimum time enabling to write data to a memory cell of the DRAM safely.