Accelerating Memory Access with Address Phase Skipping in LPDDR2-NVM

Jaehyun Park, Donghwa Shin, Naehyuck Chang, Hyung Gyu Lee
2014 JSTS Journal of Semiconductor Technology and Science  
Low power double data rate 2 non-volatile memory (LPDDR2-NVM) has been deemed the standard interface to connect non-volatile memory devices such as phase-change memory (PCM) directly to the main memory bus. However, most of the previous literature does not consider or overlook this standard interface. In this paper, we propose address phase skipping by reforming the way of interfacing with LPDDR2-NVM. To verify effectiveness and functionality, we also develop a system-level prototype that
more » ... es our customized LPDDR2-NVM controller and commercial PCM devices. Extensive simulations and measurements demonstrate up to a 3.6% memory access time reduction for commercial PCM devices and a 31.7% reduction with optimistic parameters of the PCM research prototypes in industries. Index Terms-Phase-change memory, LPDDR2-NVM, main memory, address phase skipping, system-level implementation
doi:10.5573/jsts.2014.14.6.741 fatcat:bbddxucf6jaunck3m5aftvd4m4