Cypress Semiconductor Corp CY7C2565XV18-600BZXC

Overview

CY7C2565XV18-600BZXC 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 telecom switching fabric.

For engineers reviewing the CY7C2565XV18-600BZXC datasheet, CY7C2565XV18-600BZXC pinout, CY7C2565XV18-600BZXC application, or CY7C2565XV18-600BZXC equivalent, key selection criteria include DDR read/write ports at 1200 Mbps effective data rate, HSTL I/O compatibility, 1.8 V core / 1.5 V I/O supply support, and 165-ball FBGA (13 × 15 × 1.4 mm) package constraints.

Technical Context

This SRAM implements true dual-port synchronous pipelined architecture with physically separate read and write data paths-enabling concurrent read and write transactions without bus turnaround. It uses two independent input clocks (K and K) for precise DDR timing control, with all synchronous inputs latched on rising edges and outputs edge-aligned to echo clocks CQ/CQ.

The device integrates a phase-locked loop (PLL) for accurate data placement, supports programmable ODT impedance selection via ODT and ZQ pins, and provides QVLD as a dedicated valid-data indicator synchronized to echo clocks-critical for reliable capture in 600 MHz systems with tight setup/hold margins.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T36130L10BG and IS61WV102436BLL-15BLI, CY7C2565XV18-600BZXC delivers 2× density at 600 MHz with integrated ODT and echo-clock timing-reducing system-level timing validation effort and eliminating 72 external terminators required by the IDT part.

Availability

CY7C2565XV18-600BZXC is available at Aetrix Electronics and suitable for network packet buffering, telecom switch fabric, and high-speed test equipment requiring stable component supply, long-lifecycle availability, and Pb-free compliance.

Supply support for CY7C2565XV18-600BZXC 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) is a fabless semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

CY7C2565XV18 belongs to the QDR® II+ Xtreme SRAM product line-engineered specifically for deterministic, high-throughput memory subsystems in networking infrastructure where concurrent access, low latency, and signal integrity are non-negotiable.

FAQ

What is the function of the DOFF pin on CY7C2565XV18-600BZXC?

The DOFF (Data-Off) pin configures read latency mode: when asserted HIGH, the device operates in QDR II+ mode with 2.5-cycle read latency; when LOW, it reverts to QDR I mode with 1-cycle latency. This pin is sampled at power-up and remains static during operation-enabling hardware-selectable timing behavior without firmware intervention.

How does on-die termination (ODT) work on this SRAM?

ODT is enabled via the ODT pin and calibrated using an external resistor on the ZQ pin. When ODT is active, it applies programmable termination (RQ/3.33 or RQ/1.66) to D[35:0], BWS[3:0], and K/K inputs-eliminating the need for 72 discrete 35–50 Ω surface-mount resistors and reducing PCB layer count and signal reflection.

Can CY7C2565XV18-600BZXC be used with a 1.35 V I/O supply?

No. The device specifies I/O supply range as 1.4 V to 1.6 V (VDDQ), with 1.5 V as the nominal target. Operation below 1.4 V violates DC electrical specifications-including setup/hold timing, output drive strength, and ODT accuracy-and is not characterized or guaranteed by Cypress.

What is the role of CQ and CQ echo clocks?

CQ and CQ are free-running, K/K-synchronized output clocks that mirror the input clock phase with minimal skew. They provide source-synchronous timing references for capturing Q[35:0] data, allowing receivers to align sampling windows precisely-critical for reliable operation at 600 MHz with tight 250 ps setup/hold windows.