Infineon Technologies CY7C1414JV18-250BZXC

Overview

CY7C1414JV18 from Cypress Semiconductor is a 1M × 36-bit (36-Mbit), 1.8V QDR-II SRAM with separate read/write ports, 267 MHz clock operation, DDR interfaces on both ports (534 Mbps effective data rate), and 165-ball FBGA (15 × 17 × 1.4 mm) packaging. It delivers full data coherency and supports concurrent read/write transactions in high-bandwidth networking buffers and packet forwarding engines.

For engineers reviewing the CY7C1414JV18 datasheet, CY7C1414JV18 pinout, CY7C1414JV18 application, or CY7C1414JV18 equivalent, key selection criteria include its dual-clock DDR timing architecture, DLL-enabled 1.5-cycle read latency, HSTL-compatible I/Os, and x36 burst width for high-throughput memory subsystems in telecom line cards and FPGA-based accelerators.

Technical Context

The CY7C1414JV18 implements a synchronous pipelined QDR-II architecture with physically independent read and write data paths, eliminating bus turnaround overhead. Its 19-bit multiplexed address bus accesses two internal 512K × 36 arrays, latched separately on rising edges of K (write) and K (read) clocks.

It uses dual echo clocks (CQ/CQ) referenced to C/C for precise data capture at 534 MHz, and supports DLL-on (1.5-cycle read latency) or DLL-off (1-cycle latency, ≤167 MHz) modes. Output impedance is calibrated via ZQ pin to match system trace impedance, and byte write selects (BWS[3:0]) enable granular 9-bit sub-word writes.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 15 mm × 17 mm × 1.4 mm body, 0.8 mm ball pitch, Pb-free compatible.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-bandwidth dual-port SRAM applications.

Compared with IDT72T36150 and IS61WV102436B, the CY7C1414JV18 uniquely balances 267 MHz performance with flexible DLL-on/off latency modes and integrated echo clocks-making it optimal for systems requiring both high throughput and timing adaptability in FPGA- or ASIC-based memory subsystems.

Availability

CY7C1414JV18 is available at Aetrix Electronics and suitable for packet buffering in network switches, FPGA co-processing memory, telecom line card data buffers, and real-time video frame store applications requiring stable component supply and long-term industrial availability.

Supply support for CY7C1414JV18 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) is a U.S.-based semiconductor company specializing in high-performance memory, microcontrollers, and programmable logic solutions for communications, industrial, and automotive markets.

This device belongs to Cypress's QDR-II SRAM product line, engineered specifically for ultra-low-latency, concurrent-access memory subsystems in high-speed networking and signal processing equipment.

FAQ

What is the function of the DOFF pin on CY7C1414JV18?

The DOFF pin disables the internal Delay Lock Loop when pulled LOW. In DLL-off mode, the device operates with 1-cycle read latency and reduced maximum frequency (≤167 MHz), reverting to QDR-I timing behavior. For normal operation, DOFF must be pulled HIGH via a ≤10-kΩ resistor to VDDQ to enable DLL-based 1.5-cycle latency and full 267 MHz capability.

How does the ZQ pin affect output drive strength?

The ZQ pin connects to an external resistor (RQ) tied to ground, calibrating the output impedance of Q[35:0], CQ, and CQ pins to 0.2 × RQ. This ensures consistent signal integrity across process/voltage/temperature variations. If ZQ is tied directly to VDDQ, the device enters minimum-impedance mode-use only if system trace impedance is ≤25 Ω and external termination is provided.

Can CY7C1414JV18 operate with a single clock domain?

Yes. When only K and C clocks are used (with K and C tied to K and C respectively), the device operates in single-clock mode. In this configuration, read data is clocked out on K/K edges instead of C/C, and echo clocks CQ/CQ are generated relative to K. All timing parameters shift accordingly, and DLL remains functional for latency control.

What is the purpose of BWS[3:0] in the x36 configuration?

BWS[3:0] are active-low byte write select signals controlling four independent 9-bit sub-word writes within the 36-bit data bus. Each BWS bit enables writing to its corresponding 9-bit segment (e.g., BWS0 → D[8:0]), leaving unselected bytes unchanged. This enables efficient partial writes without requiring read-modify-write cycles, critical for protocol header updates in packet processing.