Patent ID: 8473653

Claim:
A semiconductor device comprising: at least one core chip that outputs parallel data comprising a plurality of parallel bits; and an interface chip that converts the parallel data supplied from the core chip into serial data comprising a plurality of series bits, and outputs the serial data to outside, wherein the core chip includes a timing control circuit that outputs a timing signal synchronized with an output of the parallel data to the interface chip, and the interface chip includes a data input circuit that captures the parallel data in synchronization with the timing signal transferred from the core chip, wherein the core chip includes a plurality of banks that are controlled nonexclusively with each other, and the parallel data that are output from the banks are supplied to the interface chip via signal paths different from one another, wherein, a plurality of the data input circuits each of which is associated one of the banks are provided in the interface chip, wherein the data input circuits are connected in series, wherein each of the data input circuits captures the parallel data that is supplied from one of an associated one of the banks and the data input circuit serial-connected in a previous stage, in synchronization with the timing signal supplied from the core chip, and the timing signal is generated with the core chip, and wherein the interface chip further includes a plurality of input selection circuits each activating an associated one of the data input circuits, upon receipt of a bank address that selects an associated one of the banks and the timing signal supplied from the core chip, and each of the input selection circuits activates an associated one of the data input circuits in synchronization with the timing signal supplied from the core chip when the bank address supplied is one of a bank address assigned to an associated one of the data input circuits and a bank address assigned to the data input circuit serial-connected in a previous stage.