The S27KL0643GABHV020 is a 64 Mb HYPERRAM™ self-refresh DRAM (PSRAM) for processor external memory, using an octal xSPI interface with DDR transfers. It supports 1.8 V or 3.0 V I/O (VCC 1.7–2.0 V or 2.7–3.6 V), up to 200 MHz clock and 400 MBps throughput, with 35 ns max access time. Hybrid Sleep and deep power-down cut standby current, and it is offered in a 24-ball FBGA package.