Infineon Technologies CY7C2565XV18-600BZC

Overview

CY7C2565XV18 from Cypress Semiconductor is a 2M × 36, 72-Mbit QDR® II+ Xtreme SRAM with four-word burst architecture, 2.5-cycle read latency (DOFF = HIGH), 600 MHz clock operation, and on-die termination (ODT) for D[35:0], BWS[3:0], and K/K inputs-designed for high-bandwidth packet buffering in network line cards and switch fabric controllers.

For engineers reviewing the CY7C2565XV18 datasheet, CY7C2565XV18 pinout, CY7C2565XV18 application, or CY7C2565XV18 equivalent, this device delivers deterministic 1200 MT/s DDR throughput per port, echo-clock–synchronized data capture, and depth-expansion support via independent RPS/WPS controls-critical for low-latency, concurrent memory access in telecom infrastructure.

Technical Context

The CY7C2565XV18 implements a synchronous pipelined QDR II+ architecture with physically separate read and write ports, enabling true concurrent read/write operations without bus turnaround. Its 512K × 36 internal organization uses 19 address bits, latched on alternating rising edges of K and K clocks to support full-duplex addressing.

It integrates a PLL for precise data placement, HSTL I/O with variable drive strength, and programmable ODT with dual-range selection (RQ/3.33 or RQ/1.66) controlled by the ODT pin. The QVLD signal edge-aligns with CQ/CQ to unambiguously indicate valid output data during each burst transfer.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-bandwidth burst SRAM applications.

Compared with IDT72T36120 and IS61WV102436B, the CY7C2565XV18 uniquely combines 600 MHz DDR throughput, on-die termination, and echo-clock–assisted data capture-enabling simpler PCB layout and higher system-level timing margin in next-generation telecom and test equipment.

Availability

CY7C2565XV18 is available at Aetrix Electronics and suitable for network packet buffering, switch fabric controller memory, telecom baseband processing, and high-speed test equipment requiring stable component supply across extended production lifecycles.

Supply support for CY7C2565XV18 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) designs high-performance memory and programmable solutions for networking, automotive, and industrial applications.

The QDR® II+ Xtreme SRAM product line targets ultra-low-latency, high-throughput memory subsystems in carrier-grade infrastructure-emphasizing deterministic timing, concurrent access, and signal integrity at multi-GHz data rates.

FAQ

What is the function of the DOFF pin on CY7C2565XV18?

The DOFF (Data Output OFF) pin configures read latency mode: when asserted HIGH, it enables 2.5-cycle QDR II+ mode for maximum bandwidth; when LOW or tied to VSS, it reverts to 1-cycle QDR I mode for minimal latency. This pin is sampled at power-up and remains static during operation-no dynamic switching is supported.

How does on-die termination (ODT) work on CY7C2565XV18?

ODT applies programmable termination resistance to D[35:0], BWS[3:0], and K/K inputs using an external ZQ resistor (175–350 Ω). The ODT pin selects range: LOW sets RQ/3.33 (~53–105 Ω), HIGH sets RQ/1.66 (~106–210 Ω). Termination activates only during active input sampling windows-not continuously-to minimize power.

Can CY7C2565XV18 be used with a 1.5 V I/O supply?

Yes-VDDQ supports 1.4 V to 1.6 V, making 1.5 V nominal operation fully compliant. HSTL Class I input thresholds and variable-drive output buffers are specified across this range. Core VDD remains fixed at 1.8 V ± 0.1 V and must be independently regulated.

What is the role of CQ and CQ echo clocks?

CQ and CQ are free-running, K/K-synchronized output clocks that replicate input clock phase and jitter characteristics. They provide a clean, low-skew reference for capturing Q[35:0] data in receiving logic-eliminating need for complex deskew circuits and relaxing FPGA input timing constraints at 1266 MHz DDR rates.