Cypress Semiconductor Corp CY7C1414AV18-200BZI

Overview

CY7C1414AV18 from Cypress Semiconductor is a 1M × 36-bit, 36-Mbit QDR-II™ SRAM with synchronous pipelined architecture, dual independent read/write ports, 200 MHz operation (500 MT/s DDR), and 1.8 V core / 1.4–1.8 V I/O supply. It delivers concurrent high-bandwidth memory access for network packet buffering in telecom line cards.

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 interface, 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 implements QDR-II architecture with physically separate read and write data paths-Q[35:0] outputs and D[35:0] inputs-eliminating bus turnaround delays. Its 2-word burst transfers occur on every rising edge of K/K (write) and C/C (read) clocks, enabling full-duplex 500 MT/s throughput at 200 MHz clock frequency.

Internal synchronization uses input registers clocked by K/K for addresses, RPS/WPS, and BWS signals, and output registers clocked by C/C for Q[35:0] and echo clocks CQ/CQ. The integrated Delay Lock Loop (DLL) aligns output data to echo clocks, ensuring ±50 ps setup/hold margin at 500 MT/s under JEDEC HSTL Class I specifications.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 15 mm × 17 mm × 1.4 mm body, RoHS-compliant lead-free option available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T3615L10PF and ISSI IS61WV102436B, the CY7C1414AV18 provides optimal balance of 500 MT/s throughput, DLL-based timing robustness, and mature QDR-II ecosystem support-making it preferred for telecom infrastructure where deterministic latency and interoperability with legacy FPGA IP are critical.

Availability

CY7C1414AV18 is available at Aetrix Electronics and suitable for network packet buffering, high-speed switch fabric memory, telecom baseband processing, and test equipment pattern memory 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.

The QDR-II SRAM product line targets high-speed networking and signal processing applications demanding deterministic latency, concurrent access, and DDR bandwidth without bus turnaround penalties.

FAQ

What is the function of the ZQ pin on CY7C1414AV18?

The ZQ pin calibrates output driver impedance to match the system data bus. When connected to a precision resistor (RQ) to ground, it sets Q[35:0], CQ, and CQ output impedance to 0.2 × RQ. Direct connection to VDDQ enables minimum impedance mode. It must never be left floating or tied to VSS.

Can CY7C1414AV18 operate with only a single clock domain?

Yes-the device supports single-clock mode where K and K are tied together, and C and C are tied together. In this configuration, Q[35:0] and CQ/CQ are driven from K, eliminating need for differential clock routing, though deskew capability is lost and timing margins tighten.

How does the BWS[3:0] signal map to the D[35:0] data bus?

BWS0 controls D[8:0], BWS1 controls D[17:9], BWS2 controls D[26:18], and BWS3 controls D[35:27]. Each active-low signal enables writing of its corresponding 9-bit byte during a write cycle; deselected bytes retain prior contents.

Is the DOFF pin required for normal operation?

No-DOFF is optional. When pulled HIGH (to VDD), the internal DLL remains enabled for precise data-to-clock alignment. Pulling DOFF LOW disables the DLL, reverting to fixed-delay output timing with reduced timing margin and increased PVT sensitivity.