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승산-누산기 유닛을 위한 in-situ 타이밍 모니터 기반의 적응형 주파수 스케일링 기법
황봉구(Bong-Gu Hwang),황인철(In-Chul Hwang) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6
This paper presents An Adaptive Frequency Scaling Technic Based on In-situ Timing Monitor for Multiplier-Accumulator Unit. The short channel devices are becoming more vulnerable to local as well as global variations. Typically, the circuits are designed with wider voltage and frequency margins to withstand these variations. However, the performance of these circuits can be adversely affected in terms of speed and power due to these additional margins. Considering these issues, we present an in-situ timing detection technique which senses the timing of the critical path with the proposed timing monitor. In our structure, an 8-bit MAC unit models the critical path. The proposed AFS technique is deigned in 65-nm CMOS process.