MULTI-PATH ACCESSIBLE SEMICONDUCTOR MEMORY DEVICE AND METHOD FOR MATCHING DATA THEREFORE

摘要

A multi-path accessible semiconductor memory device for assuring data matching in case of independent data unit per port and a method for matching data therefor are provided to access a shared memory region and a dedicated memory region in the semiconductor memory device in independent bit unit per port. A semiconductor memory device comprises a memory cell array. The memory cell array has a first memory bank, a second memory bank and a third memory bank. The first memory bank is connected to a first processor through a first port having N data input/output bits. The second memory bank is connected to a second processor through a second port having 2N data input/output bits. The third memory bank is connected to the first and the second processor in common through the first and the second port. An address coding shifting part(500) performs bit-shifting of a first and a second column address applied in a read operation mode selectively, in order for data stored in the third memory bank to match the first and the second processors according to the first and the second column address applied through the first and the second port correspondingly.