The Infineon CY7C1525KV18-250BZC is a 72Mbit synchronous QDR-II SRAM organized 8M x 9, clocked at 250 MHz, operating from a 1.7V–1.9V supply. It uses a parallel memory interface and is housed in a 165-LBGA (13x15 mm FBGA) package. This part is designed for high-bandwidth, low-latency data buffering in networking, telecom, and high-performance computing applications where the QDR-II architecture eliminates bus-turnaround dead cycles by providing separate read and write ports.
250 MHz clock — timing margin and system throughput
The 250 MHz clock rate defines the peak data rate: with a 9-bit-wide data bus on each port, the device can sustain up to 2.25 Gbps per port (read and write simultaneously). For the system designer, this clock speed drives the timing closure budget on the PCB — trace-length matching and signal-integrity analysis become critical at this frequency, especially in the 165-FBGA package with its fine-pitch balls. The QDR-II interface uses source-synchronous clocking, so the controller must match the DLL-based output timing. A 250 MHz part is typically paired with an FPGA or ASIC that has dedicated QDR-II PHY hard macros.
Supply rail and 1.8V compatibility
The supply range of 1.7V–1.9V covers the nominal 1.8V logic rail with margin for ripple and tolerance. This makes the part directly compatible with 1.8V I/O systems — no level translation needed on the data or address buses. The core and I/O share the same supply, so a clean 1.8V rail with adequate decoupling (typically 0.1 µF per VDD ball, plus bulk capacitance) is essential for reliable 250 MHz operation.
Infineon lists the CY7C1525KV18-250BZC as obsolete.