The Cypress CY7C1041G18-15ZSXIT is a 4Mbit asynchronous SRAM organized as 256K x 16 bits. It uses a parallel interface and delivers a 15 ns access time, making it a drop-in fit for buffering, scratchpad, or cache applications in embedded systems that need fast, deterministic read/write without refresh overhead. The 1.65 V to 2.2 V supply range aligns with low-voltage core rails found in modern MCUs, FPGAs, and SoCs — no level shifting needed if the host runs at 1.8 V or 2.0 V.
For a 1.8 V core running at 50–60 MHz, this part keeps the memory bus tight without forcing the designer to insert wait states or switch to a synchronous (clocked) SRAM.
Housed in a 44-TSOP II package (0.400" body width, 10.16 mm), this is a standard surface-mount SRAM footprint. The TSOP II format is reworkable with a hot-air station — no BGA underfill or X-ray inspection needed. The Tape & Reel (TR) packaging suits automated pick-and-place lines.