Cypress Semiconductor Corp CY7C1414KV18-250BZXI

Overview

CY7C1414KV18 from Cypress Semiconductor is a 1M × 36, 36-Mbit QDR® II SRAM with two-word burst architecture, 250 MHz maximum operating frequency (400 ps clock period), 1.8 V core supply, and 1.4–1.8 V I/O supply. It features separate read/write ports, DDR interfaces on both ports, echo clocks (CQ/CQ), and PLL-based timing control for high-speed networking buffer applications.

For engineers reviewing the CY7C1414KV18 datasheet, CY7C1414KV18 pinout, CY7C1414KV18 application, or CY7C1414KV18 equivalent, key selection criteria include concurrent read/write bandwidth, 19-bit address bus support, HSTL-18-compatible I/O, DOFF-controlled read latency (1 or 1.5 cycles), and 165-ball FBGA (13 × 15 × 1.4 mm) package compatibility with high-density routing.

Technical Context

The CY7C1414KV18 implements QDR II architecture with fully independent read and write ports sharing a multiplexed 19-bit address bus (A[18:0]), enabling true concurrent transactions without bus turnaround. Its dual-clock domain uses K/K for address/data capture and C/C for output timing, with echo clocks CQ/CQ referenced to C/C to simplify high-speed data capture at 500 MT/s.

Internally organized as two 512K × 36 arrays, it supports synchronous self-timed writes, programmable byte write selects (BWS[3:0]), and DOFF-pin-selectable read latency (1 cycle LOW, 1.5 cycles HIGH). The integrated PLL ensures precise data placement relative to echo clocks, critical for deterministic timing in packet buffering and switch fabric designs.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body, 0.8 mm ball pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1414KV18, CY7C1412KV18 offers identical density but narrower data path and reduced pin count, while AS7C362000B-250BIN trades echo clock simplicity for SSTL compatibility-neither provides drop-in replacement due to I/O signaling and timing architecture differences.

Availability

CY7C1414KV18 is available at Aetrix Electronics and suitable for network packet buffering, switch fabric memory, telecom baseband processing, and high-speed test equipment requiring stable component supply and long-term industrial availability.

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, low-latency, concurrent-access memory subsystems in networking and telecom infrastructure where bus turnaround overhead must be eliminated.

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 1.5-cycle pipelined read latency for improved timing margin at high frequencies; when LOW, it selects 1-cycle combinatorial read latency for minimal delay. This setting directly affects the internal pipeline stage count and must be fixed at power-up.

Can CY7C1414KV18 operate with only a single clock input?

Yes-CY7C1414KV18 supports single-clock-domain operation where K and C are tied together, and K and C are tied together. In this mode, all timing references derive from K/K, eliminating need for separate output clocks but reducing skew compensation capability compared to dual-clock mode with echo clocks.

How does byte write select (BWS) work for the 36-bit data width?

BWS[3:0] independently controls four 9-bit byte lanes: BWS0 → D[8:0], BWS1 → D[17:9], BWS2 → D[26:18], BWS3 → D[35:27]. Each active-low signal gates its respective byte during write operations; deselected bytes retain prior contents, enabling efficient partial-word updates without read-modify-write cycles.

Is the 165-ball FBGA package lead-free compliant?

Yes-CY7C1414KV18 is offered in both Pb-free (RoHS-compliant) and non-Pb-free versions. The -BZXI suffix denotes the Pb-free, industrial temperature grade (-40°C to +85°C) variant with 165-ball FBGA packaging, verified per JEDEC J-STD-020 moisture sensitivity level 3.