One of the challenges that digital designers run into frequently involves getting rid of glitches in their design. This is typically accounted for by ensuring there is adequate set-up and hold time when data is latched. A ‘glitch’ is a signal which does not remain active for a full clock period. If a signal with a glitch feeds the clock line of numerous latches, some of the latches may get updated, while others may not. This is clearly a situation that designers want to avoid. It should also be noted that propagation delay varies with temperature, therefore, a design which does not produce glitches during development may produce glitches under different conditions. How to Overcome it?
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