Dual-Loop Two-Step ZQ Calibration for Dynamic Voltage-Frequency Scaling in LPDDR4 SDRAM

Chang-Kyo Lee, Junha Lee, Kiho Kim, Jin-Seok Heo, Jin-Hyeok Baek, Gil-Hoon Cha, Daesik Moon, Dong-Hun Lee, Jong-Wook Park, Seunseob Lee, Si-Hyeong Cho, Young-Ryeol Choi, Kyung-Soo Ha, Eunsung Seo, Youn-Sik Park, Seung-Jun Bae, Indal Song, Seok-Hun Hyun, Hyuck-Joon Kwon, Young-Soo Sohn, Jung Hwan Choi, Kwang-Il Park, Seong-Jin Jang. Dual-Loop Two-Step ZQ Calibration for Dynamic Voltage-Frequency Scaling in LPDDR4 SDRAM. J. Solid-State Circuits, 53(10):2906-2916, 2018. [doi]

Abstract

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