72 Mbit QDR II+ SRAM for high-throughput data paths
The CY7C2565KV18-400BZXI is a 72 Mbit synchronous SRAM built on QDR II+ architecture, organized as 2M x 36 and clocked at 400 MHz. The QDR II+ interface delivers independent read and write data ports on every clock edge, eliminating bus-turnaround dead cycles that limit conventional SRAM throughput in packet-processing and line-card applications.
Infineon has classified the CY7C2565KV18-400BZXI as Obsolete. No direct replacement or successor part is listed in the product line. For BOM positions still requiring this exact order code, procurement must source from the open market through independent distributors. The 0.65 mm ball pitch demands a multi-layer PCB with controlled-impedance routing; the layout engineer should verify escape-routing feasibility early in the design cycle.
Industrial temperature and package constraints
The 1.7V–1.9V supply rail is tighter than standard 1.8V ±5%; the power supply must be regulated to stay within this window, especially under load transients from the 400 MHz clock. The 165-ball FBGA (13x15 mm) package requires a 4-layer or more PCB for fan-out. Decoupling capacitors should be placed within 2 mm of the BGA balls on the bottom layer; the 0.65 mm pitch limits the via size to 0.25 mm finished diameter.