The Infineon CY62256LL-55ZXET is a 256Kbit (32K x 8) parallel SRAM from the MoBL® (More Battery Life) series, designed for low-power standby in battery-backed or cache applications. The 55 ns access time sets the read-cycle floor for the memory bus — a 55 ns window means the address-to-data valid delay, so the controller must hold the address stable for at least that long before latching the output. At a 4.5V supply, this part operates on a nominal 5V rail, making it a drop-in for legacy 5V logic systems without a level translator.
The extended temperature grade means the timing parameters are guaranteed across the full range, not just at 25°C — a critical factor for outdoor telecom, engine bay controllers, or factory-floor equipment that sees thermal cycling.