Semiconductor device

摘要

The yield of a semiconductor device is improved which has a large-scale logic circuit or which has both a logic circuit and a memory. A basic circuit block (1) is provided with an input/output circuit (2). A transmission line (3) and a branch line (4) connect the input/output circuits (2) so that information can be exchanged through the input/output circuits (2) between one basic circuit block (1) and another basic circuit block (1). The memory in each basic circuit block (1) or in each input/output circuit (2) can be programmed from the outside to designate the destination of a signal. By thus changing the program in the memory, the transmission destination of a signal can be changed to give various functions efficiently with a limited circuit scale. Moreover, if a basic circuit block fails another basic circuit block substitutes for it to improve the yield drastically.