Infineon Technologies CY7C2663KV18-550BZXC

Overview

CY7C2663KV18-550BZXC from Infineon Technologies (formerly Cypress) is a 144-Mbit QDR® II+ SRAM with quad data rate architecture, 8M × 18 organization, 550 MHz clock frequency, 2.5-cycle read latency, and on-die termination (ODT). It serves as a high-bandwidth, low-latency memory buffer in network packet processors, telecom line cards, and FPGA-based acceleration systems requiring concurrent read/write access.

For engineers reviewing the CY7C2663KV18-550BZXC datasheet, CY7C2663KV18-550BZXC pinout, CY7C2663KV18-550BZXC application, or CY7C2663KV18-550BZXC equivalent, this page delivers verified specifications, FBGA-165 pin mapping, QDR II+ timing behavior, ODT configuration logic, and real-world use context for high-speed memory subsystem design.

Technical Context

The device implements true dual-port synchronous SRAM architecture with physically separate read and write data paths-eliminating bus turnaround delays. Its four-word burst transfers occur at DDR rates on both ports, achieving 1100 MT/s effective data rate at 550 MHz K/K clocks.

Internal PLL synchronizes echo clocks (CQ/CQ) to input clocks for precise data capture; DOFF pin selects between 2.5-cycle (QDR II+) and 1-cycle (QDR I-compatible) read latency modes. ODT supports programmable termination on D[17:0], BWS[1:0], and K/K inputs via ZQ calibration and ODT pin state.

Key Specifications

Pinout & Package

Package: 165-ball fine-pitch ball grid array (FBGA), 15 mm × 17 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 QDR II+ SRAM applications.

Compared with CY7C2663KV18-550BZXC, CY7C2665KV18-550BZXC offers higher data width but identical timing and packaging, while AS7C3256A-15JCIN lacks QDR architecture entirely-making it unsuitable for bandwidth-constrained datapath applications.

Availability

CY7C2663KV18-550BZXC is available at Aetrix Electronics and suitable for network packet buffering, FPGA-based acceleration, and telecom line card memory requiring stable component supply across extended product lifecycles.

Supply support for CY7C2663KV18-550BZXC 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

Infineon Technologies acquired Cypress Semiconductor in 2020 and now owns and supports the full QDR SRAM portfolio, including legacy Cypress designs like the CY7C2663 series.

This device belongs to Infineon's high-performance memory product line, engineered specifically for deterministic-latency, high-throughput data buffering in networking, wireless infrastructure, and real-time signal processing systems.

FAQ

What is the function of the DOFF pin on CY7C2663KV18-550BZXC?

The DOFF (Data-Off) pin selects the read latency mode: when asserted high, it enables QDR II+ operation with 2.5-cycle read latency; when low, it reverts to QDR I-compatible 1-cycle latency. This pin is sampled at power-up and remains latched, allowing hardware-level compatibility switching without firmware intervention.

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

ODT provides programmable input termination for D[17:0], BWS[1:0], and K/K pins using internal resistors calibrated via the ZQ pin. The ODT pin selects between two impedance ranges (RQ/3.33 or RQ/1.66), and calibration occurs automatically during power-up. No external resistors are needed, reducing BOM count and improving signal integrity at 1100 MT/s.

Can CY7C2663KV18-550BZXC operate with VDDQ = 1.5 V?

Yes - the device supports VDDQ from 1.4 V to 1.8 V, including 1.5 V operation. This allows interoperability with 1.5 V HSTL interfaces while maintaining full 550 MHz performance and 2.5-cycle latency. Core VDD must remain at 1.8 V ± 0.1 V regardless of VDDQ setting.

What is the purpose of CQ and CQ echo clocks?

CQ and CQ are free-running, source-synchronous echo clocks aligned to K and K respectively. They provide precise timing references for capturing Q[17:0] output data, eliminating setup/hold uncertainty in high-speed PCB layouts. Their phase relationship is guaranteed per datasheet AC specs, enabling reliable DDR latch timing at 1100 MT/s.