Seongjong Kim

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Advanced CMOS technologies are highly susceptible to process, voltage, and temperature (PVT) variations due to sub-wavelength lithography and other manufacturing challenges. These variations cause performance uncertainty for which timing margins must be added to guarantee correct operation. Ultimately, this results in lost performance or energy: performance(More)
This paper presents Razor-Lite, which is a low-overhead register for use in error detection and correction (EDAC) systems. These systems are able to eliminate timing margins by using specialized registers to detect setup time violations. However, these EDAC registers incur significant area and energy overheads, which mitigates some the system benefits.(More)
This paper presents on-chip temperature sensor circuits for dense thermal monitoring in digital VLSI systems. The sensor directly captures the temperature dependency of threshold voltage. The prototype in a 65nm demonstrates that as compared to the state of the arts it can achieve a 9&#x00D7; smaller footprint of 30.1&#x03BC;m<sup>2</sup> and a 3&#x00D7;(More)
This paper presents a design approach for upgrading the resiliency of ultra-low-voltage (ULV) microprocessors through a voltage-scalable and low-overhead in-situ error detection and correction (EDAC) technique. Particular efforts are made to overcome the poor voltage scalability and area/energy/throughput overhead of the existing EDAC techniques when(More)
In-situ error-detection and correction techniques have a strong potential to eliminate the worst-case margins in ultra-low-voltage (ULV) pipelines while achieving high variation tolerance. Adding the capability of error detection, however, can incur large hardware overhead, especially in ULV due to the larger variability. In this paper, we analyze the(More)