SEMICONDUCTOR MEMORY DEVICE HAVING CIRCUIT FOR MINIMIZING TRANSMISSION PATHS OF INPUT/OUTPUT DATA AND DIFFERENCE BETWEEN TRANSMISSION PATHS

摘要

PURPOSE: A semiconductor memory device having a circuit for minimizing transmission paths of input/output data and a difference between transmission paths are provided to minimize transmission paths of a plurality of input/output data and a difference between the transmission paths. CONSTITUTION: The first pad group(11) is formed with a multitude of data input/output pads near to a center of a chip. The second pad group(12) is formed with the remaining data input/output pads except for the data input/output pads of the first pad group(11). The first bank(100) has the first input/output portion(61) including a plurality of input/output sense amplifiers and the second input/output portion(62) including a plurality of input/output sense amplifiers. The second bank(200) has the third input/output portion(63) including a plurality of input/output sense amplifiers and the fourth input/output portion(64) including a plurality of input/output sense amplifiers. The third bank(300) has the fifth input/output portion(65) including a plurality of input/output sense amplifiers and the sixth input/output portion(66) including a plurality of input/output sense amplifiers. The fourth bank(400) has the seventh input/output portion(67) including a plurality of input/output sense amplifiers and the eighth input/output portion(68) including a plurality of input/output sense amplifiers. The first circuit(13) and the second line(14) performs functions for multiplexing input/output data between the input/output pads of the first and the second pad groups(11,12) and the corresponding banks(100-400).