Infineon Technologies CY7C1414AV18-167BZCT

Overview

CY7C1414AV18 from Cypress Semiconductor is a 1M × 36-bit (36-Mbit), 167 MHz QDR-II™ SRAM with separate read/write ports, DDR interfaces on both ports (500 MT/s effective data rate), and 1.8V core / 1.4–1.8V I/O supply. It implements synchronous pipelined burst architecture with two-word burst depth and supports concurrent read/write operations in high-bandwidth networking buffers and packet classification engines.

For engineers reviewing the CY7C1414AV18 datasheet, CY7C1414AV18 pinout, CY7C1414AV18 application, or CY7C1414AV18 equivalent, key selection criteria include its 19-bit address bus, 36-bit bidirectional data width, BWS[3:0] byte write control, DLL-enabled timing accuracy, and 165-ball FBGA package compatibility with high-speed PCB layout constraints.

Technical Context

The CY7C1414AV18 uses QDR-II architecture with physically independent read and write data paths-Q[35:0] outputs and D[35:0] inputs-eliminating bus turnaround overhead. Its dual-clock domain employs K/K for address/control latching and C/C for output timing, with echo clocks CQ/CQ referenced to C/C to compensate for flight-time skew in multi-device memory subsystems.

All synchronous inputs (RPS, WPS, BWS[3:0], A[18:0]) are registered on rising edges of K/K; all outputs (Q[35:0], CQ, CQ) are edge-aligned to C/C. Internal self-timed writes and DLL-based data placement ensure setup/hold compliance at 167 MHz, supporting deterministic latency across temperature and voltage ranges.

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, RoHS-compliant lead-free option available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1414AV18-200BZCT, this part trades peak bandwidth for lower power and relaxed timing closure; compared with AS7C33618A-167BIN, it offers integrated JTAG and Cypress-qualified DLL behavior critical for production test and signal integrity assurance.

Availability

CY7C1414AV18 is available at Aetrix Electronics and suitable for network packet buffering, switch fabric lookup tables, baseband signal processor caches, and high-speed test equipment requiring stable component supply across extended product lifecycles.

Supply support for CY7C1414AV18 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, with emphasis on signal integrity and timing precision.

The QDR-II SRAM product line targets high-bandwidth, low-latency memory subsystems in networking infrastructure and real-time signal processing, prioritizing concurrent access, deterministic timing, and robust DDR signaling.

FAQ

What is the minimum supported I/O voltage (VDDQ) for CY7C1414AV18?

The device supports VDDQ from 1.4 V to 1.8 V. Operation below 1.4 V is not guaranteed and violates the HSTL Class I specification required for proper input threshold and output drive compliance. At 1.4 V, output drive strength is reduced but remains functional within AC timing limits specified in the datasheet.

Can CY7C1414AV18 operate with only one clock (K-only mode)?

Yes - the device supports single-clock mode where K serves as both input and output clock. In this configuration, C and C are tied to K and K respectively, and Q[35:0] is driven on K/K edges. However, echo clocks CQ/CQ remain functional and aligned to K/K, preserving deskew capability for receiver capture.

How does the ZQ pin affect output impedance calibration?

ZQ connects to an external resistor (RQ) to ground; the device measures RQ and scales its output drivers to 0.2 × RQ. For example, a 50 Ω RQ yields ~10 Ω driver impedance. If ZQ is tied to VDDQ, minimum impedance mode activates (~7 Ω), increasing drive strength but potentially worsening signal integrity on long traces.

Is DOFF pin required to be pulled high in normal operation?

Yes - DOFF must be held HIGH (VDDQ or logic 1) to enable the internal DLL. Pulling DOFF LOW disables the DLL, causing significant AC timing parameter shifts (e.g., increased tAC, reduced tHZ), and is only recommended for specific debug or legacy compatibility scenarios explicitly documented in the datasheet.