Cypress Semiconductor Corp CY7C1414KV18-250BZC

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 Mbps per pin), 1.8 V core supply, and 1.4–1.8 V I/O supply. It features separate read/write ports, echo clocks (CQ/CQ), and PLL-based DDR timing for high-bandwidth networking buffers in packet switching ASICs.

For engineers reviewing the CY7C1414KV18 datasheet, CY7C1414KV18 pinout, CY7C1414KV18 application, or CY7C1414KV18 equivalent, key selection criteria include concurrent read/write capability, 19-bit address bus support, 36-bit DDR data interface, DOFF-controlled read latency (1 or 1.5 cycles), and 165-ball FBGA package compatibility with high-speed PCB layout constraints.

Technical Context

This QDR II SRAM implements fully independent synchronous read and write ports sharing a multiplexed 19-bit address bus, with all inputs latched on rising edges of K/K clocks and outputs registered to C/C clocks. Its dual-clock DDR interface enables simultaneous 666 Mbps data transfer on both ports without bus turnaround.

The device uses an internal PLL for precise data placement, supports byte-write masking via four BWS signals (BWS0–BWS3), and delivers full data coherency through pipelined self-timed writes. Echo clocks CQ/CQ are free-running and phase-aligned to C/C, enabling source-synchronous capture at the controller.

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 CY7C1414KV18-250BZC, the BZI variant offers extended thermal reliability without timing or layout changes, while the AS7C33618A-250BIN enables higher bandwidth at the cost of stricter signal integrity and controller timing validation.

Availability

CY7C1414KV18-250BZC is available at Aetrix Electronics and suitable for packet switching buffers, high-speed test instrumentation, 5G baseband processing, and optical transport framing requiring stable component supply over multi-year production cycles.

Supply support for CY7C1414KV18-250BZC 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 test equipment where bus turnaround overhead must be eliminated.

FAQ

What is the function of the DOFF pin on CY7C1414KV18-250BZC?

The DOFF (Data Output OFFset) pin selects read latency mode: when asserted HIGH, it enables 1.5-cycle read latency for improved timing margin; when LOW, it configures 1-cycle latency for minimal pipeline delay. This setting is sampled at power-up and remains static during operation - no runtime reconfiguration is supported.

Can CY7C1414KV18-250BZC operate with only a single clock domain?

Yes. The device supports single-clock mode where K and C are tied together (and K and C likewise), allowing simplified timing closure at the expense of reduced skew compensation. In this mode, echo clocks CQ/CQ track K/K instead of C/C, and all data transfers remain DDR but lose flight-time deskewing capability.

How many byte-write enable signals does CY7C1414KV18-250BZC support?

CY7C1414KV18-250BZC supports four byte-write select signals: BWS0 through BWS3. Each controls an 8-bit lane within the 36-bit data word (BWS0: D[7:0], BWS1: D[15:8], BWS2: D[23:16], BWS3: D[35:24]), enabling granular 1–4 byte writes without disturbing adjacent bytes.

Is the 165-ball FBGA package of CY7C1414KV18-250BZC lead-free?

Yes. The -250BZC suffix denotes a Pb-free, RoHS-compliant 165-ball FBGA package with NiPdAu surface finish. Cypress confirms full compliance with JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and qualifies the package for standard reflow profiles including peak temperatures up to 260°C.