2002•1993 IEEE International Symposium on Circuits and SystemsRequires access
Superpipelined adder designs
I.H. Unwala, Earl E. Swartzlander
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Abstract
The superpipelining concept is applied to adder designs. Superpipelined designs of ripple carry, carry select, conditional sum, and carry lookahead adders are presented as examples. It is shown that the carry skip adder cannot be superpipelined. Results for the total number of latches required, the number of pipelining stages, and the total gate counts are presented. It is shown that the superpipelined carry lookahead adder is faster and less complex than the other adders.>