Infineon Technologies CY7C1414KV18-333BZC

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 - deployed in high-bandwidth networking line cards for packet buffering and header lookup.

For engineers reviewing the CY7C1414KV18 datasheet, CY7C1414KV18 pinout, CY7C1414KV18 application, or CY7C1414KV18 equivalent, key selection criteria include concurrent read/write port independence, echo-clock–assisted timing closure at 666 MHz, DOFF-configurable 1-cycle vs. 1.5-cycle read latency, and FBGA-165 package compatibility with high-density routing constraints.

Technical Context

This QDR II SRAM implements fully independent synchronous read and write ports sharing a multiplexed address bus, with all inputs latched on rising edges of K/K clocks and outputs registered to C/C clocks. It uses on-chip PLL for precise data placement and supports both dual-clock (K/K + C/C) and single-clock (K-only) modes.

The device delivers true concurrent transactions via separate D[35:0] input and Q[35:0] output buses, eliminating bus turnaround overhead. Depth expansion is enabled by RPS/WPS controls and four byte-write selects (BWS[3:0]), each governing 9-bit subwords within the 36-bit data path.

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, JEDEC MO-245 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T3615L5 and IS61WV102436B, CY7C1414KV18 uniquely combines echo-clock timing assistance, DOFF-configurable latency, and JTAG 1149.1 support - making it optimal for high-reliability, timing-critical networking hardware requiring debug visibility and layout margin.

Availability

CY7C1414KV18 is available at Aetrix Electronics and suitable for high-bandwidth networking equipment, telecom infrastructure, and FPGA-accelerated data processing systems requiring stable component supply and long-term lifecycle assurance.

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 demanding embedded and communications applications.

CY7C1414KV18 belongs to the QDR® II SRAM product line, engineered specifically for deterministic, low-latency, concurrent-access memory subsystems in packet-switched infrastructure.

FAQ

What is the function of the DOFF pin on CY7C1414KV18?

The DOFF (Data Output OFFset) pin configures read latency: when held LOW, the device operates with 1-cycle read latency; when HIGH, it uses 1.5-cycle latency. This setting determines internal pipeline depth and directly impacts timing closure margins at 333 MHz - no external configuration register or command is required.

Can CY7C1414KV18 operate with only a single clock signal?

Yes - the device supports single-clock mode where K serves as both input and output clock. In this mode, C and C are unused, and CQ/CQ are derived from K. However, dual-clock mode (K/K + C/C) is required to achieve full timing margin benefits from echo-clock deskewing in multi-device systems.

How does byte write select (BWS[3:0]) work on the 36-bit interface?

BWS[3:0] are four independent active-low signals, each enabling one 9-bit subword of the 36-bit D[35:0] bus: BWS0 → D[8:0], BWS1 → D[17:9], BWS2 → D[26:18], BWS3 → D[35:27]. Only asserted BWS lines allow corresponding byte writes; unasserted lines preserve existing memory contents.

Is JTAG boundary scan supported, and what standard does it follow?

Yes - CY7C1414KV18 integrates IEEE 1149.1-compliant TAP controller with instruction register, bypass register, and boundary-scan register. It supports mandatory instructions (SAMPLE/PRELOAD, EXTEST, BYPASS) and optional ones (IDCODE, CLAMP), enabling full pin-level testability and interconnect verification in dense PCB assemblies.