DDR II SRAM at 250 MHz — what it delivers on the bus
The CY7C1320BV18-250BZI is a 18 Mbit DDR II synchronous SRAM from Infineon (formerly Cypress), organized as 512K x 36 and clocked at 250 MHz. The DDR II architecture delivers two data transfers per clock cycle, giving the bus an effective data rate of 500 MT/s per pin — the kind of throughput a network packet buffer or high-speed cache line needs. The 36-bit word width matches a 32-bit data bus plus parity or ECC bits without needing a second device.
Industrial temperature in a 165-ball FBGA
Infineon lists the CY7C1320BV18-250BZI as obsolete. There is no last-time-buy window open from the factory, and no direct pin-compatible successor on the official record.