Clock gated static pulsed flip-flop (CGSPFF) in sub 100 nm technology

In this paper, a new flip flop called clock gated static pulsed flip-flop (CGSPFF) is proposed. The dynamic power consumption in CGSPFF is reduced by avoiding unnecessary input pulse transitions with clock gating. Two transistors in the main block of the flip-flop are eliminated to achieve low leakage power as well. Using the new clock pulse generator leads to a higher operational speed and lower power consumption compared to the previously proposed flip-flops. The results of the simulation show that the PDP of the proposed flip flop is reduced by at least 58.3%.

[1]  T. Higashi,et al.  Flip-flop selection technique for power-delay trade-off [video codec] , 1999, 1999 IEEE International Solid-State Circuits Conference. Digest of Technical Papers. ISSCC. First Edition (Cat. No.99CH36278).

[2]  N. Nedovic,et al.  Hybrid latch flip-flop with improved power efficiency , 2000, Proceedings 13th Symposium on Integrated Circuits and Systems Design (Cat. No.PR00843).

[3]  Gaetano Palumbo,et al.  Evaluation on power reduction applying gated clock approaches , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[4]  Saibal Mukhopadhyay,et al.  Leakage current mechanisms and leakage reduction techniques in deep-submicrometer CMOS circuits , 2003, Proc. IEEE.

[5]  F. Weber,et al.  Flow-through latch and edge-triggered flip-flop hybrid elements , 1996, 1996 IEEE International Solid-State Circuits Conference. Digest of TEchnical Papers, ISSCC.

[6]  Yuan Taur,et al.  Fundamentals of Modern VLSI Devices , 1998 .

[7]  F. Klass Semi-dynamic and dynamic flip-flops with embedded logic , 1998, 1998 Symposium on VLSI Circuits. Digest of Technical Papers (Cat. No.98CH36215).

[8]  Hamid Mahmoodi,et al.  Dual-edge triggered static pulsed flip-flops , 2005, 18th International Conference on VLSI Design held jointly with 4th International Conference on Embedded Systems Design.

[9]  Yinshui Xia,et al.  Differential CMOS edge-triggered flip-flop with clock-gating , 2002 .