Clock pulse extender mode for clocked memory devices having prec

Details Clock pulse extender mode for clocked memory devices having prec Clock pulse extender mode for clocked memory devices having prec

1997-04-30

1999-06-29

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

327264, 327285, H03K 708

Patent

active

059173530

ABSTRACT:
According to the present invention, clock control logic circuitry of a clocked memory device using precharged data path techniques generates a self-timed pulse. The self-timed pulse is representative of a pulsed path active strobe or a reset strobe of the clocked memory device. The clock control logic circuitry of the present invention is characterized as having at least a first delay timing chain, a second delay timing chain, and means for selectively changing the width of a self-timed pulse generated by the clock control logic circuitry. Selectively changing the width of the self-timed pulse is accomplished by selectively adding the delay of the first delay timing chain to the delay of the second delay timing chain during a special mode of operation of the clocked memory device. Selectively changing the width of the self-timed pulse allows a user to compensate for variations in the width of the self-timed pulse which may be caused by process parameter variations, voltage variations, and external temperature bias, for instance, such that the self-timed pulse has an optimal width for both correct circuit action and maximum clock frequency of the clocked memory device.

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