Semiconductor integrated circuit capable of selecting lines of data bus to which data is input when the number of bits of input data is different from the number of bits of the data bus

摘要

A semiconductor integrated circuit is provided which is capable of selecting lines of a data bus to which data is input when the number of bits of input data is different from the number of bits of the data bus with which to input data to be written into a RAM. The semiconductor integrated circuit comprises K-bit data bus lines D 0 to D 7 (K is an integer 2 or more) to which data is input; selection circuits SEL ( 0 ) to SEL ( 13 ) for selecting data input through an N number of the data bus lines on the high bit side or through an N number of the data bus lines on the low bit side based on a set signal when N-bit data is input into the data bus lines (N is an integer smaller than K); and a random access memory (RAM) 1 for storing data selected by the selection circuit.