Cypress Semiconductor Corp CY7C1414KV18-333BZXI

Overview

CY7C1414KV18 from Cypress Semiconductor is a 1M × 36, 36-Mbit QDR® II SRAM with two-word burst architecture, 333 MHz clock frequency, DDR interfaces on both read and write ports (666 MHz data rate), and 1.8 V core / 1.4–1.8 V I/O supply. It delivers concurrent read/write transactions for high-bandwidth networking buffers in packet forwarding engines.

For engineers reviewing the CY7C1414KV18 datasheet, CY7C1414KV18 pinout, CY7C1414KV18 application, or CY7C1414KV18 equivalent, key selection criteria include its 19-bit address bus, echo-clock–assisted timing closure at 666 MHz, DOFF-configurable 1-cycle vs. 1.5-cycle read latency, and 165-ball FBGA package compatibility with high-speed memory subsystems.

Technical Context

The CY7C1414KV18 implements a synchronous pipelined QDR II architecture with physically separate read and write ports sharing a multiplexed 19-bit address bus. All inputs are registered on rising edges of K/K clocks; all outputs are registered on C/C clocks, enabling precise DDR timing control without bus turnaround.

It integrates a PLL for accurate data placement, supports JTAG 1149.1 boundary scan, and uses variable-drive HSTL output buffers. Depth expansion is enabled via four byte write selects (BWS[3:0]) and independent RPS/WPS controls - critical for building wide-memory systems with deterministic latency.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body, RoHS-compliant, with 0.8 mm ball pitch and standard HSTL-compatible pad layout.

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, CY7C1414KV18 uniquely balances QDR II concurrency, programmable latency, and 1.8 V/1.4 V flexible I/O - making it optimal for upgrade paths from QDR I and bandwidth-critical telecom infrastructure.

Availability

CY7C1414KV18 is available at Aetrix Electronics and suitable for packet forwarding engines, telecom line cards, network processor caches, and high-speed test equipment requiring stable component supply across extended product lifecycles.

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) is a fabless semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

CY7C1414KV18 belongs to Cypress's QDR II SRAM product line, engineered specifically for deterministic, high-bandwidth memory subsystems in networking and test equipment where concurrent access and sub-10 ns latency are mandatory.

FAQ

What is the function of the DOFF pin on CY7C1414KV18?

The DOFF (Data Output OFF) pin configures read latency mode: when asserted HIGH, it enables QDR II operation with 1.5-cycle latency; when LOW, it reverts to QDR I–compatible 1-cycle latency. This allows runtime optimization for pipeline alignment or backward compatibility without hardware change.

Can CY7C1414KV18 operate with only one clock domain (K-only)?

Yes - the device supports single-clock-mode operation using only K and K for both input latching and output driving. In this mode, C and C are unused, and Q[35:0] are clocked by K/K. However, echo clocks (CQ/CQ) remain inactive, reducing timing margin for high-speed capture.

How does the BWS[3:0] signal work for partial writes?

BWS[3:0] are active-LOW byte write enables controlling D[35:0] in eight-bit groups: BWS0→D[7:0], BWS1→D[15:8], BWS2→D[23:16], BWS3→D[31:24]. D[35:32] are not byte-selectable and always written when their respective BWS is asserted. Unselected bytes retain prior values.

Is CY7C1414KV18 pin-compatible with other QDR II SRAMs in the CY7C14xxKV18 family?

No - while all share the same 165-ball FBGA footprint, pin assignments differ significantly across CY7C1425KV18 (×9), CY7C1412KV18 (×18), and CY7C1414KV18 (×36), especially for data, address, and byte-select signals. PCB layout is not interchangeable; each requires dedicated routing.