DATA INPUT AND OUTPUT CIRCUIT FOR INPUTTING AND OUTPUTTING DATA IN A READ OPERATION OR WRITE OPERATION AND A SEMICONDUCTOR MEMORY DEVICE

摘要

PURPOSE: A data input and output circuit and a semiconductor memory device are provided to minimize an area by using an amplification unit shared in a read operation and a write operation.;CONSTITUTION: An amplification unit(21) generates a data signal by amplifying the data of a first input and output line connected to a bank in a read operation and generates a driving signal by amplifying the data of a second input and output line in a write operation. A read driving unit(22) drives a second input and output line in response to the data signal in the read operation. A write driving unit(23) drives the first input and output line in response to the driving signal in the write operation.;COPYRIGHT KIPO 2013;[Reference numerals] (21) Amplification unit; (22) Read driving unit; (23) Write driving unit