6. Related Work
Several fine-grained DRAM structures have been proposed in
conventional 2D DRAM. For example, Fujitsu implements the
Fast-cycle RAM (FCRAM) that has a sub-bank structure and
achieves faster access speed and lower power consumption
than the baseline 2D DRAM [37]. Unfortunately, FCRAM
has low cell density that leads to limited memory capacity.
Similarly, Reduced-latency DRAM (RLDRAM) [38] was introduced
with a smaller bank size for low access latency. RLDRAM,
however, also induces large area overhead so that