期刊
IEEE JOURNAL OF SOLID-STATE CIRCUITS
卷 58, 期 5, 页码 1496-1504出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2022.3219091
关键词
Differential structure; effective clock load; flip-flop (FF); redundant internal clock transition; reliability; single-ended structure
A static contention-free differential flip-flop (SCDFF) is introduced for low-voltage and low-power applications, offering fully static and contention-free operation and wide-range voltage scalability.
A static contention-free differential flip-flop (SCDFF) is presented in 28-nm CMOS for low-voltage and low-power applications. The SCDFF offers fully static and contention-free operation without redundant internal clock transitions with footed differential latches and the same area as a conventional transmission-gate flip-flop (TGFF). The fully static and contention-free operation allows high variation tolerance at a low supply voltage regime, achieving wide-range voltage scalability (1-0.3 V). The measurement results with a test chip fabricated in 28-nm CMOS technology show that power consumption is reduced by 64%/56% with a 0%/10% activity ratio at 1 V compared to that of a TGFF. All 100 dies from five process corners were functional with supply voltage as low as 0.28 V.
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