QDR II SRAM at 200 MHz – what it means for the bus
The CY7C1315BV18-200BZXC is an 18 Mbit QDR II synchronous SRAM organized as 512K x 36, clocked at 200 MHz. QDR II architecture eliminates bus-turnaround dead cycles by dedicating separate read and write data ports, so back-to-back throughput hits the full 200 MHz rate without idle cycles. That makes it a fit for high-bandwidth buffer applications in network switches, telecom line cards, and test equipment where sustained read-write throughput matters more than density.
Temperature grade limits the deployment environment
Rated for commercial temperature range (0°C to 70°C). That means indoor, temperature-controlled equipment only – server rooms, central offices, lab instrumentation. Not rated for industrial enclosures, outdoor cabinets, or any environment where ambient can drift outside that window.
Obsolete – no direct replacement listed
Infineon has marked the CY7C1315BV18-200BZXC as obsolete. No official successor order code appears in the lifecycle record. For a BOM line that needs this exact density and package, the supply path is surplus and independent distribution – quoted to order against an RFQ. Availability and current pricing confirmed at quote time.