HyperRAM™ KS — 64 Mbit PSRAM with HyperBus
The Infineon S27KS0642GABHI030 is a 64 Mbit Pseudo SRAM (PSRAM) from the HyperRAM™ KS family, built around a HyperBus interface that clocks at 200 MHz. It is a volatile memory — data is lost on power-down — but it reads and writes with the simplicity of an SRAM, no refresh overhead visible to the host.
The 200 MHz HyperBus clock delivers a peak data rate that keeps up with modern MCUs and FPGAs that have a HyperBus controller. The 35 ns access time is the latency from chip-select to first data — fast enough that the memory can serve as a scratchpad or execute-in-place (XIP) memory for code that does not fit in the MCU's internal SRAM. The 8M x 8 organization (64 Mbit) is a single-die density; if the design needs more, the HyperBus protocol supports multiple chip-selects for cascading.