INPUT/OUTPUT TIMING-CONTROLLED INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To make performable a precise delay control operation without using many external input terminals in order to decide the delay amount in an input/ output timing-controlled integrated circuit. SOLUTION: A signal which is used to decide the delay amount is controlled by a memory element 3 and a memory element 9. The memory elements 3, 9 for timing control are constituted of a shift register, and they are controlled by an external terminal 1 and an external terminal 2. In addition, in order to eliminate an irregularity in a wiring delay between a delay element 5 and a delay element 10, the delay elements 5, 10 are built in an input/output cell.