Title :
A 381 fs/bit, 51.7 nW/bit nearest hamming-distance search circuit in 65 nm CMOS
Author :
Mattausch, Hans Jürgen ; Yasuda, Masahiro ; Kawabata, Akio ; Imafuku, Wataru ; Koide, Tetsushi
Author_Institution :
Hiroshima Univ., Higashi-Hiroshima, Japan
Abstract :
The developed fully-parallel associative memory in 65nm CMOS for nearest Hamming-distance search is based on distance-frequency mapping with ring oscillators. The largest reference-data capacity of 128 pattern with 512 bit each, the shortest minimum search time of 3.81·10-13 s/bit and the lowest power dissipation of 5.17·10-8 W/bit in comparison to previous designs are reported. In particular, the power-delay product of 1.97·10-20 J/bit is improved by a factor 140.
Keywords :
CMOS memory circuits; content-addressable storage; oscillators; CMOS; distance-frequency mapping; fully-parallel associative memory; nearest Hamming-distance search circuit; ring oscillator; size 65 nm; word length 512 bit; Associative memory; Delay; Frequency conversion; Power dissipation; Registers; Ring oscillators; Very large scale integration;
Conference_Titel :
VLSI Circuits (VLSIC), 2011 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-61284-175-5
