Obsolete — sourcing path for the CY7C11481KV18-400BZXC
The 400 MHz clock rate on a DDR II+ (Double Data Rate, second-generation plus) interface means data is transferred on both edges of the clock, yielding an effective 800 MT/s data rate per pin. For a system architect sizing a high-throughput cache or FIFO buffer, this part delivers 1.8 GB/s peak bandwidth on an 18-bit-wide data bus (1M x 18 organization). The 1.7V–1.9V supply rail is narrow — it requires a dedicated 1.8V core regulator, not a legacy 3.3V or 2.5V SRAM rail.
Package and footprint — 165-FBGA (13x15)
This is a surface-mount package requiring a reflow profile compatible with 1.7V–1.9V SRAM devices. The BGA pitch and ball layout are specific to the Cypress DDR II+ SRAM family; any replacement candidate must match the footprint exactly to avoid a board respin. The shipping medium is Tray, not Tape & Reel, which affects pick-and-place feeder setup for volume assembly.