Infineon Technologies CY7C1414KV18-300BZXC

Overview

CY7C1414KV18 from Cypress Semiconductor is a 1M × 36, 36-Mbit QDR® II SRAM with two-word burst architecture, 333 MHz clock operation (666 MHz DDR data rate), 1.8 V core supply, and 1.4–1.8 V I/O supply. It features separate read/write ports, echo clocks (CQ/CQ), and PLL-based timing control for high-speed networking buffer applications.

For engineers reviewing the CY7C1414KV18 datasheet, CY7C1414KV18 pinout, CY7C1414KV18 application, or CY7C1414KV18 equivalent, key selection criteria include its 1M × 36 organization, dual-clock DDR interface, DOFF-configurable 1- vs 1.5-cycle read latency, and 165-ball FBGA package compatibility with high-bandwidth packet buffering systems.

Technical Context

The CY7C1414KV18 implements a synchronous pipelined QDR II architecture with physically independent read and write data paths-eliminating bus turnaround delays. Its 19-bit address bus accesses a 512K × 36 memory array split across two internal banks, latched on alternating rising edges of K/K clocks.

Read and write operations use dedicated DDR interfaces: data transfers occur on both rising edges of C/C (read) and K/K (write), enabling full-duplex concurrent access. The integrated PLL aligns echo clocks (CQ/CQ) to output clocks for precise source-synchronous capture in 10 GbE and switch fabric designs.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body, RoHS-compliant, 0.8 mm ball pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C362000B-333BIN and MT47H64M16HR-37E:H, the CY7C1414KV18 uniquely delivers deterministic 1-cycle latency, echo-clock–assisted capture, and true dual-port concurrency-making it irreplaceable in line-rate packet buffering and 5G baseband timing-critical designs.

Availability

CY7C1414KV18 is available at Aetrix Electronics and suitable for high-speed network switch buffers, telecom line card packet memory, and 5G radio unit baseband processing requiring stable component supply and long-term lifecycle support.

Supply support for CY7C1414KV18 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 networking, automotive, and industrial applications.

The QDR® II SRAM product line targets ultra-low-latency, high-bandwidth buffering in packet-switched infrastructure-optimized for deterministic timing, concurrent access, and source-synchronous data capture in ASIC/FPGA co-designs.

FAQ

What is the function of the DOFF pin on CY7C1414KV18?

The DOFF (Data Output OFFset) pin configures read latency: when asserted HIGH, it enables 1.5-cycle latency for improved timing margin at maximum frequency; when LOW, it selects 1-cycle latency for minimal delay in time-critical control paths. This setting directly affects the number of internal pipeline stages before data appears on Q[35:0].

How does the CY7C1414KV18 handle byte-level writes?

It uses four active-low byte write select signals (BWS[3:0]), each controlling a 9-bit lane of the 36-bit D[35:0] bus. During a write, only lanes with asserted BWS signals update memory; unselected bytes retain prior values-enabling efficient partial-word updates without read-modify-write cycles.

Can CY7C1414KV18 operate with a single clock domain instead of differential clocks?

Yes-when K is tied to C and K to C, the device operates in single-clock mode. In this configuration, K/K drives both input registers and output registers, eliminating need for separate C/C generation but sacrificing flight-time deskew capability provided by differential output clocks.

What is the role of CQ and CQ echo clocks in system design?

CQ and CQ are free-running output clocks synchronized to C and C, respectively. They serve as source-synchronous timing references for external receivers (e.g., FPGA IDELAYCTRL), allowing precise deskewing of data traces and compensation for PCB propagation delays-essential for reliable >500 MHz DDR capture.