Infineon Technologies CY7C2663KV18-550BZXI

Overview

CY7C2663KV18 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 and telecom line cards where concurrent read/write operations and precise DDR timing are critical.

For engineers reviewing the CY7C2663KV18 datasheet, CY7C2663KV18 pinout, CY7C2663KV18 application, or CY7C2663KV18 equivalent, key selection criteria include its 1100 MT/s effective data rate, separate read/write ports, echo clock (CQ/CQ) support for timing margining, HSTL I/O compatibility, and 165-ball FBGA package with VDD = 1.8 V / VDDQ = 1.4–1.8 V operation.

Technical Context

This device implements a true dual-port synchronous SRAM architecture with independent read and write pipelines-each using DDR interfaces synchronized to complementary K/K clocks. The 2.5-cycle read latency is enabled via DOFF pin assertion, while internal PLL ensures accurate data placement relative to echo clocks CQ/CQ.

It supports four-word burst transfers per access, eliminating address bus turnover overhead. ODT is configurable per D[17:0], BWS[1:0], and K/K inputs via ZQ resistor tuning, and JTAG 1149.1 boundary scan enables system-level testability without external probes.

Key Specifications

Pinout & Package

Package: 165-ball fine-pitch ball grid array (FBGA), 15 mm × 17 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 AS7C3256A-15JCIN and IS61WV102418BLL-10BLI, CY7C2663KV18 delivers 16.5× higher effective bandwidth, eliminates bus turnaround overhead, and integrates ODT-making it irreplaceable in systems demanding deterministic 550 MHz dual-port operation with sub-nanosecond timing margins.

Availability

CY7C2663KV18 is available at Aetrix Electronics and suitable for network packet processors, telecom line cards, baseband processing units, and high-frequency trading systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for CY7C2663KV18 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 maintains full product continuity, documentation, and support for the QDR® II+ SRAM portfolio originally developed by Cypress.

This device belongs to Infineon's high-performance memory product line, engineered specifically for deterministic, low-latency data buffering in infrastructure-class networking and communications equipment operating at multi-gigabit speeds.

FAQ

What is the function of the DOFF pin on CY7C2663KV18?

The DOFF (Disable Off) pin selects read latency mode: when asserted high, it enables 2.5-cycle read latency for maximum bandwidth; when low, it reverts to 1-cycle latency like QDR I devices. This pin is sampled during power-up initialization and remains latched until reset. Its state directly determines burst timing alignment and must match system controller expectations.

How does on-die termination (ODT) work on CY7C2663KV18?

ODT is configured via the ODT pin and calibrated against an external ZQ resistor (typically 240 Ω). When ODT is enabled, internal termination resistors (175–350 Ω range) are activated on D[17:0], BWS[1:0], and K/K inputs. This replaces discrete parallel termination, reducing signal reflections and simplifying PCB layout-especially critical at 550 MHz clock rates.

Can CY7C2663KV18 operate with VDDQ = 1.5 V?

Yes. The device supports VDDQ from 1.4 V to 1.8 V, including 1.5 V nominal. At 1.5 V, AC timing parameters such as tAC (address-to-data) and tHZ (output hold) remain within spec per datasheet Table 10, provided VDD remains at 1.8 V ± 0.1 V and ambient temperature stays within –40°C to +85°C industrial range.

What is the role of CQ and CQ echo clocks?

CQ and CQ are free-running, phase-aligned copies of the K and K input clocks, respectively. They are driven out synchronously with Q[17:0] data and serve as timing references for the receiving device (e.g., FPGA) to sample data with minimal skew. Their edge alignment with QVLD enables robust setup/hold margining in 1100 MT/s DDR interfaces.