Cypress Semiconductor Corp CY7C1514AV18-200BZI

Overview

CY7C1514AV18-200BZI from Cypress Semiconductor is a 72-Mbit QDR® II SRAM with 2M × 36 organization, 200 MHz maximum operating frequency, 1.8 V core supply (VDD), and 1.4–1.8 V I/O supply (VDDQ), deployed in high-bandwidth networking packet buffers and switch fabric memory subsystems.

For engineers reviewing the CY7C1514AV18-200BZI datasheet, CY7C1514AV18-200BZI pinout, CY7C1514AV18-200BZI application, or CY7C1514AV18-200BZI equivalent, key selection criteria include DDR read/write ports, 1.5-cycle DLL-enabled read latency, echo clock (CQ/CQ) support for timing deskew, and HSTL-18-compatible variable-drive outputs.

Technical Context

This device implements true dual-port synchronous pipelined architecture with physically separate read and write data paths-no bus turnaround required. It uses independent K/K input clocks for address/data capture and C/C output clocks for data launch, enabling concurrent read and write operations at 200 MHz (400 MT/s per port).

The integrated Delay Lock Loop (DLL) aligns internal timing to achieve precise 1.5-cycle read latency; when disabled via DOFF pin, it reverts to QDR I mode with 1-cycle latency and reduced max frequency (167 MHz). All I/Os comply with HSTL Class I specifications and support impedance tuning via ZQ pin.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 15 mm × 17 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 high-speed dual-port SRAM applications.

Compared with IDT72T3615L10BG and IS61WV102436B, CY7C1514AV18-200BZI delivers double the density and bandwidth, DLL-controlled sub-cycle timing, and echo-clock–assisted data capture-making it uniquely suitable for modern packet-processing ASIC/FPGA interfaces requiring deterministic 400 MT/s throughput.

Availability

CY7C1514AV18-200BZI is available at Aetrix Electronics and suitable for network switch fabric design, high-end packet buffer implementation, and FPGA-based baseband processing requiring stable component supply across extended production lifecycles.

Supply support for CY7C1514AV18-200BZI 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, automotive, and industrial systems.

CY7C1514AV18 belongs to the QDR® II SRAM product line, engineered specifically for deterministic, low-latency, full-duplex memory access in packet-switching infrastructure and high-speed digital signal processing subsystems.

FAQ

What is the function of the DOFF pin on CY7C1514AV18-200BZI?

The DOFF (DLL Turn Off) pin is an active-low control that disables the internal Delay Lock Loop. When pulled LOW, the device operates in QDR I mode with 1-cycle read latency and a maximum frequency of 167 MHz. For standard QDR II operation at 200 MHz with 1.5-cycle latency, DOFF must be held HIGH via a ≤10 kΩ pull-up resistor to VDDQ.

How does the ZQ pin affect output driver performance?

The ZQ pin enables on-die impedance calibration for Q[35:0] and CQ/CQ outputs. When connected to a precision resistor (RQ) to ground, the device tunes its output drivers to 0.2 × RQ, matching typical 50 Ω transmission lines. If tied directly to VDDQ, it enters minimum-impedance mode-useful for short-trace, low-noise environments but not recommended for long backplane runs.

Can CY7C1514AV18-200BZI operate with only a single clock pair?

Yes-it supports single-clock mode using only K/K to drive both input registers and output registers (replacing C/C). In this mode, data is launched on K/K edges, eliminating need for separate output clocks. However, echo clocks (CQ/CQ) remain functional and aligned to K/K, preserving timing deskew capability for controller-side capture.

What is the purpose of BWS[3:0] in a 36-bit configuration?

BWS[3:0] are four independent active-low byte write select signals, each controlling a 9-bit segment of the 36-bit D[35:0] bus. BWS0 governs D[8:0], BWS1 covers D[17:9], BWS2 handles D[26:18], and BWS3 manages D[35:27]. This allows partial-word writes without read-modify-write cycles-critical for updating metadata fields or protocol headers in packet buffers.