Cypress Semiconductor Corp CY7C2265KV18-450BZC

Overview

CY7C2265KV18 from Cypress Semiconductor is a 1 M × 36, 36-Mbit QDR® II+ SRAM with 2.5-cycle read latency, 450 MHz clock operation (900 MT/s DDR), on-die termination (ODT), and HSTL I/O interfaces. It implements separate read/write ports for concurrent transactions and uses echo clocks (CQ/CQ) and QVLD for precise high-speed data capture in networking packet buffers and baseband processing.

For engineers reviewing the CY7C2265KV18 datasheet, CY7C2265KV18 pinout, CY7C2265KV18 application, or CY7C2265KV18 equivalent, key selection criteria include its 1 M × 36 organization, 450 MHz maximum frequency, ODT support on D[35:0]/BWS[3:0]/K/K inputs, and 165-ball FBGA (13 × 15 × 1.4 mm) package with VDD = 1.8 V ± 0.1 V and VDDQ = 1.4–1.8 V.

Technical Context

The CY7C2265KV18 employs a synchronous pipelined architecture with independent read and write ports sharing a multiplexed 18-bit address bus (A[17:0]). Each port operates with double-data-rate interfaces synchronized to K and K clocks, enabling four-word bursts per access at 450 MHz.

It integrates a PLL for accurate data placement, supports depth expansion via RPS/WPS controls, and implements on-die termination configurable via ODT and ZQ pins for D[35:0], BWS[3:0], and K/K inputs - eliminating external termination resistors while maintaining signal integrity at 900 MT/s.

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 option available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T3615L10BG and ISSI IS61WV102436B, CY7C2265KV18 uniquely balances 450 MHz performance, 1.4–1.8 V I/O flexibility, and programmable 2.5/1-cycle latency - making it optimal for systems needing adaptive timing behavior without sacrificing bandwidth or voltage margin.

Availability

CY7C2265KV18 is available at Aetrix Electronics and suitable for networking packet buffers, baseband digital front-ends, and high-speed test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CY7C2265KV18 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) designs high-performance memory and programmable solutions for communications, industrial, and automotive markets.

CY7C2265KV18 belongs to Cypress's QDR® II+ SRAM product line, engineered specifically for deterministic, high-bandwidth memory interfacing in packet-processing and signal-processing systems demanding concurrent read/write access and sub-5 ns latency.

FAQ

What is the function of the DOFF pin on CY7C2265KV18?

The DOFF (Delay OFF) pin selects read latency mode: when asserted HIGH, the device operates with 2.5-cycle read latency; when LOW, it reverts to 1-cycle latency like QDR I. This allows system designers to optimize for bandwidth (2.5-cycle) or minimal latency (1-cycle) without changing hardware, and the setting is sampled at power-up initialization.

How does on-die termination (ODT) work on CY7C2265KV18?

ODT is enabled via the ODT pin and calibrated using an external resistor on the ZQ pin. When ODT is active, it applies programmable termination (RQ/1.66 or RQ/3.33) to D[35:0], BWS[3:0], and K/K inputs. This replaces discrete 50 Ω resistors, reducing PCB layer count, improving signal integrity, and simplifying layout - especially critical for 450 MHz DDR routing.

Can CY7C2265KV18 be used with a 1.5 V VDDQ supply?

Yes. The device supports VDDQ from 1.4 V to 1.8 V, fully compatible with 1.5 V systems. HSTL Class I drivers and receivers are specified across this range, and DC/AC electrical characteristics (including setup/hold times and ODT values) are guaranteed at 1.5 V - confirmed in the "Operating Range" and "DC Electrical Characteristics" sections of datasheet 001-57843 Rev. *L.

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 serve as source-synchronous strobes for capturing Q[35:0] output data, eliminating skew-dependent timing margins. Unlike conventional clocks, they track K/K jitter and duty cycle variations, enabling robust 900 MT/s DDR sampling in FPGAs without manual delay tuning or IDELAYCTRL calibration.