DELAY MODELING AND POWER ANALYSIS FOR MTCMOS USING TRIMODE TECHNIQUE

Multi-threshold CMOS (MTCMOS), which is also known as power/ground gating is the most commonly used leakage power suppression technique in state-of-the-art integrated circuits. Significant power and ground distribution network noise is produced when an MTCMOS circuit blocks transitions from sleep mode to active mode. Mode transition noise is the most important reliability issue in MTCMOS circuits. Sleep signal slew rate modulation is an alternative technique that is effective for suppressing the reactivation noise in MTCMOS circuits. A tri-mode MTCMOS technique is proposed in this dissertation. With the new digital tri-mode MTCMOS techniques, fast and energy efficient mode transitions are achieved with negligible reactivation noise in MTCMOS circuits