Patent ID: 6359816
Filing Date: 2002-03-19
Classification: G01R,G11C

Abstract:
A device for measuring the response time of a circuit, the circuit having a circuit output for providing a response to a stimulus at a circuit input node thereof, the device comprising first circuitry having a clock node and an output, said first circuitry being connected to store at an output thereof an output condition, said output condition corresponding to a state of said circuit output at the time of occurrence of a clock pulse at said clock node, the device further comprising second circuitry and third circuitry, said second circuitry being responsive to a second circuitry input signal at its input to provide said stimulus at said input node of said circuit, and said third circuitry being responsive to a third circuitry input signal at its input to provide a clock pulse at said clock node of said first circuitry whereby said response time is determined by time delay between said second circuitry input signal and said third circuitry input signal, and further comprising connecting circuitry disposed between said outputs of said second and third circuitry, and said circuit input and said clock node, wherein said connecting circuitry is operable alternatively to connect said second circuitry output to said circuit input and said third circuitry output to said clock node, or said second circuitry output to said clock node and said third circuitry output node to said circuit input.