Patent ID: 6806731
Filing Date: 2004-10-19
Classification: G01R

Abstract:
A semiconductor integrated circuit device, including storage elements and logic gates which constitute a scan flip-flop, said device comprising:a first storage element having inputs and an output; a first logic gate having inputs and an output, wherein the inputs to said first logic gate include a first signal, the output signal of the first storage element, and a second signal; a second logic gate having inputs and an output, wherein the inputs to said second logic gate include the output signal of the first logic gate, a third signal, and a fourth signal, wherein the output signal of the second logic gate and a fifth signal are input into the first storage element; a second storage element having inputs and an output; and a third logic sate having inputs and an output, wherein the inputs to said third logic gate include the output signal of the first storage element, the output signal of the second storage element, and the fourth signal, further wherein the inputs of said second storage element include the output signal of the third logic gate and the fifth signal.