SEMICONDUCTOR MEMORY APPARATUS

摘要

PURPOSE: A semiconductor memory apparatus is provided to reduce the size of a circuit by including a data reading/writing common current operation part. CONSTITUTION: A data transmission part controls access to a memory cell according to a voltage level of a selection signal. A selection signal output part(250) outputs a selection signal which has a first control voltage level in a data writing state. The selection signal output part outputs a selection signal which has a second control voltage level in a data reading state. A data detection part(230) outputs reading data according to a detection result by detecting voltage generated by a sensing current supplied to the memory cell through the data transmission part. The second control voltage level is lower than the first control voltage level.