Cypress Semiconductor Corp CY7C2563XV18-600BZXC

Overview

CY7C2563XV18-600BZXC from Cypress Semiconductor is a 4M × 18, 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[17:0], BWS[1:0], and K/K inputs-designed for high-bandwidth packet buffering in network line cards and telecom switching fabric.

For engineers reviewing the CY7C2563XV18-600BZXC datasheet, CY7C2563XV18-600BZXC pinout, CY7C2563XV18-600BZXC application, or CY7C2563XV18-600BZXC equivalent, key selection criteria include DDR read/write ports, HSTL I/O compatibility, echo clock (CQ/CQ) timing support, and 165-ball FBGA package integration with depth expansion via RPS/WPS control.

Technical Context

This SRAM implements true dual-port synchronous pipelined architecture: independent read and write ports share one multiplexed address bus but use separate data paths (Q[17:0] outputs, D[17:0] inputs), eliminating bus turnaround overhead. Each port operates at DDR rates-data transferred on both rising edges of K and K clocks-enabling 1200 MT/s effective throughput at 600 MHz clock frequency.

The device integrates a PLL for precise data placement, echo clocks (CQ/CQ) synchronized to K/K for simplified high-speed capture, and programmable ODT with two impedance ranges selected by the ODT pin and ZQ-referenced resistor. Read latency is configurable: 2.5 cycles (QDR II+ mode, DOFF = HIGH) or 1 cycle (QDR I mode, DOFF = LOW).

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm, 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 IDT72T3615L10PF and IS61WV102418B, CY7C2563XV18-600BZXC uniquely delivers 72-Mbit density with DDR QDR II+ timing, integrated ODT, and 1.5 V HSTL I/O-making it the sole fit for 600 MHz–1200 MT/s synchronous packet buffering with minimal board-level components.

Availability

CY7C2563XV18-600BZXC is available at Aetrix Electronics and suitable for network packet buffering, telecom switch fabric, high-speed test equipment memory, and defense radar signal processing requiring stable component supply across extended production lifecycles.

Supply support for CY7C2563XV18-600BZXC 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 U.S.-based semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

CY7C2563XV18 belongs to the QDR® II+ Xtreme SRAM product line, engineered specifically for deterministic, low-latency, high-throughput memory subsystems in networking and telecom infrastructure where concurrent read/write bandwidth and signal integrity are mission-critical.

FAQ

What is the function of the DOFF pin on CY7C2563XV18-600BZXC?

The DOFF (Data-Off) pin configures read latency mode: when asserted HIGH, it enables QDR II+ operation with 2.5-cycle read latency; when LOW or tied to VSS, it reverts to QDR I mode with 1-cycle latency. This pin is sampled at power-up and remains latched during operation-no runtime reconfiguration is supported.

Does CY7C2563XV18-600BZXC require external termination resistors?

No. The device integrates on-die termination (ODT) for D[17:0], BWS[1:0], and K/K inputs, selectable via the ODT pin and calibrated against the ZQ pin's external 240 Ω resistor. This eliminates the need for 20+ discrete 50 Ω resistors, reducing PCB area and improving high-speed signal integrity.

How does the echo clock (CQ/CQ) improve system timing margin?

CQ and CQ are free-running, K/K-synchronized output clocks that track the same phase relationship as the Q[17:0] data outputs. By using CQ/CQ as capture clocks at the receiving end, systems achieve source-synchronous timing-removing skew between clock and data paths and enabling reliable 1200 MT/s operation without complex deskew circuitry.

Can CY7C2563XV18-600BZXC be used in depth-expanded configurations?

Yes. The device supports depth expansion using RPS (Read Port Select) and WPS (Write Port Select) pins to enable independent operation of multiple devices on the same data bus. Each chip responds only when its RPS or WPS is asserted, allowing seamless 4M × 18 → 8M × 18 or wider expansions without external logic.