What this 500 MHz QDR II+ SRAM does on the board
The CY7C1565KV18-500BZXI is a 72Mbit synchronous SRAM built on QDR II+ architecture, organized as 2M x 36. The 500 MHz clock rate gives it a burst data rate that keeps a high-performance FPGA or network processor fed without wait states — the double-data-rate interface delivers two 36-bit words per clock cycle on both read and write ports.
Housed in a 165-ball FBGA measuring 13x15 mm (supplier device package 165-FBGA), the footprint is a fine-pitch BGA that demands a multi-layer PCB with controlled-impedance traces for the QDR II+ bus. The 0.80 mm ball pitch is standard for this density — fan-out is manageable on a 6-layer board with microvias, but the 36-bit data bus width means the layout engineer should budget at least two signal layers for the parallel interface. The tray packaging is standard for this BGA format — the parts ship in anti-static trays, not tape-and-reel, so pick-and-place feeders need a tray handler or a tube adapter.
Active lifecycle and supply posture
The base product number CY7C1565 covers the family, and the -500 speed grade is the fastest in the series — if a design can tolerate a lower clock rate, the -300 or -400 variants are alternative order codes within the same footprint.