550 MHz DDR II+ SRAM with 2M x 36 organization
The CY7C25702KV18-550BZXI is a 72Mbit synchronous SRAM from the DDR II+ family, organized as 2M x 36 bits. The 550 MHz clock rate means the data bus toggles at 1.1 Gbps per pin in double-data-rate mode — the memory controller must close timing on a 0.9 ns data valid window, which drives the board layout and termination strategy. Operating from a 1.7V to 1.9V core supply, the part draws its dynamic current from the switching activity on the 36-bit parallel interface.
The 0.8 mm ball pitch is standard for this density — the board stack-up must match the 1.7V-1.9V supply plane impedance and route the 36 data lines with matched trace lengths to keep the bus skew within the timing budget. The tray packaging is typical for production-volume loading into pick-and-place machines.
No official replacement or pin-compatible successor is listed — the part is the current production variant. The base product number CY7C25702 identifies the family; the -550BZXI suffix encodes the 550 MHz speed grade, the FBGA package, and the industrial temperature range.