S27KL0642GABHI030 is a 64 Mb HYPERRAM self-refresh DRAM (PSRAM) with a HYPERBUS interface using an 8-bit DDR data bus (DQ[7:0]) plus RWDS and CS#. It supports single-ended or optional differential clock and optional DDR center-aligned read strobe (DCARS). Clock rates reach 200 MHz for up to 400 MBps, with 35 ns max access time. Runs from 2.7 V to 3.60 V at -40°C to +85°C industrial.