A clock stretcher mechanism is provided for shifting a rising edge of a negative active global clock signal beyond a rising edge of a feedback path signal. A negative active global clock signal and a clock chopper signal are received in a base block. First base block circuitry modifies the clock chopper signal in order to form the feedback path signal. Second base block circuitry shifts the rising edge of the negative active global clock signal beyond the rising edge of the feedback path signal using a delay negative active global clock signal.