| 摘要 |
PROBLEM TO BE SOLVED: To execute an instruction in which the timing conditions of transmission of the data of a semiconductor element is changed, and read by a branch instruction, under predetermined timing conditions. SOLUTION: Instruction data (100) of a branch instruction are read, and instruction data (011) passing through a critical path are read, and one of two clock signals clk1 is masked for preparing the passage of the instruction data (011) through the critical path, and even when the decrease of the frequency of the clock signal clk to be input to the semiconductor element of the critical path is started (T9), the masking of the clock signal clk1 is stopped (T10) in the case of reading and executing the instruction data according to the instruction data (100) of a branch instruction. Thus, the instruction read according to the branch instruction is executed under predetermined timing conditions. COPYRIGHT: (C)2011,JPO&INPIT |
