Patent ID: 6549484
Filing Date: 2003-04-15
Classification: G11C

Abstract:
A semiconductor device comprising:a signal generation circuit which outputs a selection signal; an input/output circuit; a first data transfer line and a second data transfer line connected to said input/output circuit, respectively; a first memory mat and a second memory mat each including a plurality of memory cells; and a control circuit connected between said first and second memory mats and said first and second data transfer lines, wherein (i) if said selection signal is in a first state, said control circuit is controlled such that data read out of said first memory mat is transferred to said input/output circuit using said first transfer line and data read out of said second memory mat is transferred to said input/output circuit using said second transfer line, and said input/output circuit is controlled such that input data to be stored in said first memory mat is transferred to said first memory mat using said first transfer line and input data to be stored in said second memory mat is transferred to said second memory mat using said second transfer line, or input data to be stored in said first memory mat is transferred to said first memory mat using said second transfer line and input data to be stored in said second memory mat is transferred to said second memory mat using said first transfer line, or (ii) if said selection signal is in a second state, said control circuit is controlled such that data read out of said first memory mat is transferred to said input/output circuit using said first transfer line or data read out of said second memory mat is transferred to said input/output circuit using said first transfer line, and said input/output circuit is controlled such that input data to be stored in said first memory mat is transferred to said first memory mat using said second transfer line and input data to be stored in said second memory mat is transferred to said second memory mat using said second transfer line.