JPS6435794A - Semiconductor memory - Google Patents

Abstract

PURPOSE:To further shorten a memory cycle time by providing a latch or a register of one step or above from the input step of address data to the output step of a sense amplifier, executing a pipeline action and executing simultaneously plural memory reading and writing requests. CONSTITUTION:Registers 7-10 are pipeline registers and provided between address recorders 5 and 6 and a memory cell array 13. Thus, the reading and writing processing itself in the chip of a semiconductor memory is made into a pipeline, the processing which cannot be divided by the pipeline register is of the processing only in the memory cell array, the effect of the pipeline action is increased by placing the pipeline register of one step or above from when the input except the chip is fetched up to the inlet of the memory cell array and from the outlet of the memory cell array up to the outputting of the output except the chip and a memory cycle time can be shortened.