Infineon Technologies CY7C2165KV18-550BZC

Overview

CY7C2165KV18 from Infineon Technologies (formerly Cypress) is a 512K × 36-bit, 18-Mbit QDR® II+ SRAM with four-word burst architecture, 2.5-cycle read latency, and on-die termination (ODT). It operates at 550 MHz with DDR interfaces on both read and write ports (1100 MT/s), supports 1.8 V core and 1.4–1.8 V I/O supply, and is packaged in a 165-ball FBGA (13 × 15 × 1.4 mm) for high-bandwidth networking buffer applications.

For engineers reviewing the CY7C2165KV18 datasheet, CY7C2165KV18 pinout, CY7C2165KV18 application, or CY7C2165KV18 equivalent, key selection criteria include its 550 MHz clock frequency, 2.5-cycle read latency mode, ODT support on D[35:0]/BWS[3:0]/K/K inputs, echo clocks (CQ/CQ) for timing margin, and JTAG 1149.1 test access port compatibility.

Technical Context

This QDR II+ SRAM implements fully independent read and write ports with separate data paths-eliminating bus turnaround-and uses dual input clocks (K and K) to latch addresses and data on rising edges only. Its PLL ensures precise data placement, while echo clocks CQ and CQ are free-running and synchronized to K/K for simplified high-speed capture.

The device supports two latency modes: 2.5-cycle read latency when DOFF = HIGH (default QDR II+ operation), and 1-cycle latency when DOFF = LOW (QDR I compatibility mode). Depth expansion is enabled via RPS/WPS and BWS[3:0], and all writes are synchronous, self-timed, and fully coherent across the 4-array internal structure (128K × 36 per array).

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 non-lead-free construction.

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 MT47H64M16HR-37E, CY7C2165KV18 uniquely delivers concurrent read/write at 1100 MT/s with guaranteed 2.5-cycle latency and integrated ODT-making it irreplaceable for QDR II+ protocol-compliant, high-throughput buffer designs.

Availability

CY7C2165KV18 is available at Aetrix Electronics and suitable for high-speed network switch buffers, telecom line card packet memory, and baseband processing memory requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CY7C2165KV18 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, industrial, and memory solutions.

CY7C2165KV18 belongs to Infineon's QDR® II+ SRAM product line, engineered specifically for deterministic, high-bandwidth packet buffering in networking and communications infrastructure where zero bus turnaround and sub-3-cycle latency are critical.

FAQ

What is the function of the DOFF pin on CY7C2165KV18?

The DOFF (Data Off) pin configures read latency mode: when asserted HIGH, the device operates in standard QDR II+ mode with 2.5-cycle read latency; when LOW, it emulates QDR I behavior with 1-cycle latency. This pin is sampled at power-up and remains latched during operation, enabling system-level latency tuning without firmware changes.

How does on-die termination (ODT) work on CY7C2165KV18?

ODT is controlled by the ODT pin and calibrated using the ZQ pin connected to an external precision resistor (175–350 Ω). When ODT is enabled, it applies programmable termination to D[35:0], BWS[3:0], and K/K inputs-reducing reflections and eliminating 72 discrete resistors. The ODT range (low/high) is selected by ODT pin logic level at power-up initialization.

Can CY7C2165KV18 be used with a 1.5 V I/O supply?

Yes. The device supports VDDQ from 1.4 V to 1.8 V, explicitly including 1.5 V operation per datasheet Note 1. All HSTL-compatible I/O buffers (inputs and outputs) are fully functional at 1.5 V, enabling interoperability with 1.5 V FPGAs and ASICs without level-shifting circuitry.

What is the role of CQ and CQ echo clocks?

CQ and CQ are free-running, edge-aligned copies of the K and K input clocks, respectively. They serve as source-synchronous strobes for capturing Q[35:0] output data, providing timing margin in high-speed systems. Unlike K/K, they do not control internal logic-only aid external data capture-and are guaranteed to track K/K with minimal skew per datasheet AC specifications.