Cypress Semiconductor Corp CY7C2263XV18-600BZXC

Overview

CY7C2263XV18 from Infineon Technologies (formerly Cypress) is a 36-Mbit QDR® II+ Xtreme SRAM with 2 M × 18 organization, 600 MHz maximum clock frequency, 2.5-cycle read latency, and on-die termination (ODT). It implements separate read/write DDR ports for concurrent high-bandwidth memory access in networking packet buffers and FPGA co-processor caches.

For engineers reviewing the CY7C2263XV18 datasheet, CY7C2263XV18 pinout, CY7C2263XV18 application, or CY7C2263XV18 equivalent, key selection criteria include its 1266 MT/s effective data rate, HSTL I/O compatibility, 165-ball FBGA package, DOFF-configurable latency mode, and echo-clock–assisted timing closure in 10G+ switch fabric designs.

Technical Context

This SRAM uses synchronous pipelined architecture with independent read and write ports, each operating at DDR rates on dedicated K/K clocks. Address latching occurs on alternating rising edges of K and K, enabling four-word burst transfers per access without bus turnaround.

The device integrates a PLL for precise data placement, supports ODT on D[17:0], BWS[1:0], and K/K inputs, and provides QVLD-synchronized valid-data indication. Its 1.8 V core supply and 1.4–1.6 V I/O supply enable low-power, high-speed operation compatible with modern FPGA and ASIC memory interfaces.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body height, 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 CY7C2263XV18, CY7C2265XV18 offers identical performance in a wider, shallower configuration ideal for 36-bit buses, while AS7C336000B-600BIN trades timing assist features for lower cost in less demanding signal-integrity environments.

Availability

CY7C2263XV18 is available at Aetrix Electronics and suitable for 10G Ethernet line cards, FPGA-based protocol accelerators, optical transport network framers, and high-frequency trading engine buffers requiring stable component supply across multi-year production cycles.

Supply support for CY7C2263XV18 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, technical support, and long-term supply commitment for the QDR® II+ Xtreme SRAM portfolio.

This device belongs to Infineon's high-performance synchronous SRAM product line, engineered specifically for deterministic, low-latency memory interfacing in wireline communications infrastructure and real-time embedded processing systems.

FAQ

What is the function of the DOFF pin on CY7C2263XV18?

The DOFF (Delay OFF) pin configures read latency mode: when asserted HIGH, it enables 2.5-cycle latency optimized for QDR II+ timing; when LOW, it reverts to 1-cycle latency compatible with legacy QDR I systems. This pin is sampled at power-up and remains static during operation, allowing system-level timing flexibility without firmware intervention.

How does On-Die Termination (ODT) work on CY7C2263XV18?

ODT applies programmable termination resistance to D[17:0], BWS[1:0], and K/K inputs using an external ZQ resistor tied to the ZQ pin. The ODT pin selects between two ranges: LOW sets RQ/3.33 (175–350 Ω), HIGH sets RQ/1.66 (175–250 Ω). Floating defaults to HIGH range, eliminating need for external 50 Ω resistors and improving signal integrity at 1266 MT/s.

Can CY7C2263XV18 operate with a single-ended clock source?

No - the device requires differential K/K clock inputs for proper DDR timing and echo clock generation. Driving K with a clock signal and tying K to ground or VDD violates AC timing specifications and disables CQ/CQ outputs and QVLD synchronization. A true differential clock source or dedicated clock buffer with complementary outputs is mandatory.

What is the role of the QVLD signal in system timing design?

QVLD is an edge-aligned valid-data indicator that pulses synchronously with CQ and CQ outputs. It signals exactly when Q[17:0] data is stable and ready for sampling by downstream logic, eliminating setup/hold uncertainty in high-speed receivers. Unlike simple clock-enable schemes, QVLD accounts for internal propagation delays and ensures reliable capture even under PVT variation.