Infineon Technologies CY7C2263KV18-450BZXI

Overview

CY7C2263KV18 from Cypress Semiconductor is a 36-Mbit QDR® II+ SRAM with 2 M × 18 organization, 550 MHz clock capability, 2.5-cycle read latency, and on-die termination (ODT) supporting D[17:0], BWS[1:0], and K/K inputs. It delivers 1100 MT/s DDR throughput on separate read/write ports for high-bandwidth networking buffers and packet memory in telecom line cards.

For engineers reviewing the CY7C2263KV18 datasheet, CY7C2263KV18 pinout, CY7C2263KV18 application, or CY7C2263KV18 equivalent, key selection criteria include its 165-ball FBGA package, HSTL I/O compatibility with 1.4–1.8 V VDDQ, echo clocks (CQ/CQ) for timing margin, QVLD data validity signaling, and DOFF-configurable 1-cycle vs. 2.5-cycle latency modes.

Technical Context

This SRAM implements true dual-port QDR II+ architecture with physically independent read and write data paths-no bus turnaround required. Its pipelined synchronous design uses rising edges of both K and K clocks to latch addresses and transfer data, enabling concurrent read and write operations at full bandwidth.

The device integrates a PLL for precise data placement, supports depth expansion via RPS/WPS controls, and features programmable ODT with ZQ calibration for impedance matching. Echo clocks CQ and CQ are free-running and edge-aligned with K/K to simplify high-speed capture in FPGA- or ASIC-based systems.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body, 0.8 mm ball pitch, RoHS-compliant Pb-free construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar QDR II+ SRAM applications.

Compared with IDT72T3615L10PA, CY7C2263KV18 trades 50 MHz clock headroom for integrated ODT and ZQ calibration - reducing PCB layer count and validation effort. Versus IS61WV102418BLL-10BLI, it provides true dual-port concurrency and burst efficiency, making it unsuitable as a drop-in replacement but essential for modern high-throughput memory subsystems.

Availability

CY7C2263KV18 is available at Aetrix Electronics and suitable for high-speed network packet buffer, telecom line card memory, and FPGA-based protocol accelerator applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CY7C2263KV18 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.

CY7C2263KV18 belongs to Cypress's QDR® II+ SRAM product line, engineered specifically for ultra-low-latency, high-bandwidth memory subsystems in networking infrastructure, baseband processing, and FPGA acceleration platforms.

FAQ

What is the function of the DOFF pin on CY7C2263KV18?

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, it reverts to QDR I compatibility mode with 1-cycle latency. This pin is sampled at power-up and remains latched until reset, allowing hardware-selectable performance versus legacy interoperability.

How does on-die termination (ODT) work on CY7C2263KV18?

ODT is enabled on D[17:0], BWS[1:0], and K/K inputs using the ODT pin and ZQ calibration resistor. ODT pin state selects termination range (RQ/3.33 or RQ/1.66), while ZQ sets actual impedance to 0.2 × RQ. This eliminates external 50 Ω resistors, reduces PCB space, and improves signal integrity at 550 MHz without sacrificing timing margin.

Can CY7C2263KV18 be used with a 1.5 V VDDQ supply?

Yes - the device supports VDDQ from 1.4 V to 1.8 V, including 1.5 V operation. HSTL I/O buffers are designed for this range, and DC/AC specifications (including setup/hold times and drive strength) are guaranteed across the full 1.4–1.8 V window per the datasheet's electrical characteristics table.

What is the purpose of CQ and CQ echo clocks?

CQ and CQ are free-running, edge-aligned copies of the K and K input clocks, respectively. They provide deterministic timing references for capturing Q[17:0] output data, eliminating the need for complex phase alignment or delay-locked loops in the receiving logic - especially valuable in FPGA-based systems where clock tree skew is difficult to control.