S27KL0642GABHB023 is a 64 Mb HYPERRAM™ self-refresh DRAM (PSRAM) for HYPERBUS™ DDR memory expansion in MCUs/SoCs with low pin count. It uses an 8-bit DQ bus with RWDS data strobe and CS#/RESET# control, supports 16/32/64/128-byte wrapped bursts or linear burst, and runs up to 200 MHz (400 MBps) with 35 ns maximum access time. Supply is 2.7 V to 3.60 V, with Hybrid Sleep and Deep Power-down down to 15 µA.