4Mbit async SRAM with 45 ns access — BOM-fit for legacy parallel buses
The CY62148GN-45SXI is a 4Mbit asynchronous SRAM organized as 512K x 8 bits, accessed through a parallel interface. The 45 ns access time and 45 ns write cycle time (word, page) set the bus timing floor — the memory controller must accommodate this window for both read and write operations. This matters for bus-level compatibility: if the rest of the system runs at 3.3V, a level translator between the memory and the controller is needed.
Active lifecycle and compliance — no end-of-life worry for new designs
The MoBL® series branding indicates this is part of Infineon's low-power asynchronous SRAM family, which typically features reduced standby current — useful for battery-backed or power-sensitive applications where the memory must retain data with minimal draw.