Title
An Energy-Efficient 24t Flip-Flop Consisting Of Standard Cmos Gates For Ultra-Low Power Digital Vlsis
Abstract
In this paper, we propose a low-power circuit-shared static flip-flop ((CSFF)-F-2) for extremely low power digital VLSIs. The (CSFF)-F-2 consists of five static NORs and two inverters (INVs). The (CSFF)-F-2 utilizes a positive edge of a buffered clock signal, which is generated from a root clock, to take data into a master latch and a negative edge of the root clock to hold the data in a slave latch. The total number of transistors is only 24, which is the same as the conventional transmission-gate flip flop (TGFF) used in the most standard cell libraries. SPICE simulations in 0.18-mu m standard CMOS process demonstrated that our proposed (CSFF)-F-2 achieved clock-to-Q delay of 18.3 ns, setup time of 10.0 ns, hold time of 5.5 ns, and power dissipation of 9.7nW at 1-MHz clock frequency and 0.5-V power supply. The physical design area increased by 16% and power dissipation was reduced by 13% compared with those of conventional TGFF. Measurement results demonstrated that our proposed (CSFF)-F-2 can operate at 0.352V with extremely low energy of 5.93 fJ.
Year
DOI
Venue
2015
10.1587/transfun.E98.A.2600
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Keywords
Field
DocType
D flip-flop, low-power, low-voltage, energy-efficient, compact
Efficient energy use,CMOS,Low voltage,Flip-flop,Electrical engineering,Mathematics
Journal
Volume
Issue
ISSN
E98A
12
0916-8508
Citations 
PageRank 
References 
0
0.34
4
Authors
5
Name
Order
Citations
PageRank
Yuzuru Shizuku171.59
Tetsuya Hirose218338.44
Nobutaka Kuroki35712.88
Masahiro Numa48220.87
Mitsuji Okada501.01