A Low Overhead, Within-a-Cycle Adaptive Clock Stretching Circuit With Wide Operating Range in 40-nm CMOS.

Adaptive voltage frequency scaling (AVFS) techniques based on in-situ timing monitoring can mitigate the excessive timing margin caused by process, voltage and temperature (PVT) variations. However, they usually adjust the frequency by clock gating, clock half-division, or phase locked loop configuration, which cause large performance loss or need a long lock time. Thus, a compact structured adapt...