Cypress Semiconductor Corp CY7C1411KV18-300BZC

Overview

CY7C1411KV18 from Cypress Semiconductor is a 4 M × 8, 36-Mbit QDR® II SRAM with four-word burst architecture, 333 MHz clock operation (666 MHz DDR data rate), 1.8 V core supply, and 1.4–1.8 V I/O supply. It delivers concurrent read/write transactions via independent ports and supports high-bandwidth networking buffers in packet-switched routers.

For engineers reviewing the CY7C1411KV18 datasheet, CY7C1411KV18 pinout, CY7C1411KV18 application, or CY7C1411KV18 equivalent, key selection criteria include 1.5-cycle read latency (DOFF = HIGH), echo clock (CQ) support for timing margin recovery, HSTL-15/18-compatible output drive, JTAG 1149.1 test access, and 165-ball FBGA (13 × 15 × 1.4 mm) package compatibility.

Technical Context

The CY7C1411KV18 implements a synchronous pipelined QDR II architecture with physically separate read and write data paths-eliminating bus turnaround overhead. Its dual-clock domain uses K/K for address/data capture and C/C for output timing, enabling precise DDR alignment without external delay compensation.

Internally, it employs a 1M × 8 × 4 array organization with multiplexed 20-bit address bus latched on alternating K-clock edges. The integrated PLL ensures accurate data placement, while DOFF pin selection configures read latency between 1 cycle (DOFF = LOW) and 1.5 cycles (DOFF = HIGH), matching legacy QDR I or optimizing for higher throughput.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T3615L5PF and IS61WV102416BLL-15BLI, the CY7C1411KV18 uniquely combines HSTL-15/18 flexibility, echo clock timing aid, and on-die impedance tuning-making it optimal for cost-sensitive, high-volume telecom line cards where board-level signal integrity margins are constrained.

Availability

CY7C1411KV18 is available at Aetrix Electronics and suitable for packet buffering in core routers, line card memory for 10G/40G Ethernet switches, telecom control plane caching, and test equipment pattern memory requiring stable component supply across extended product lifecycles.

Supply support for CY7C1411KV18 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 programmable analog/digital ICs for industrial, automotive, and communications markets.

The QDR® II SRAM product line was designed specifically for ultra-low-latency, high-throughput packet processing in networking infrastructure-emphasizing deterministic timing, concurrent access, and robust signal integrity at multi-GHz data rates.

FAQ

What is the function of the DOFF pin on CY7C1411KV18?

The DOFF (Data Output OFFset) pin selects read latency mode: when HIGH, it configures 1.5-cycle latency for optimized QDR II timing margin; when LOW, it enables 1-cycle latency for backward compatibility with QDR I controllers. This setting directly affects the C-clock-to-Q-data timing relationship and must be fixed at power-up.

Can CY7C1411KV18 operate with only a single clock source?

Yes-CY7C1411KV18 supports single-clock mode where K and C are driven by the same clock signal. In this configuration, read data is registered on the same clock edge as address latch, eliminating need for separate C-clock generation but reducing maximum achievable bandwidth compared to dual-clock operation.

How does the ZQ pin enable output driver calibration?

The ZQ pin connects to a precision 240 Ω ±1% resistor to ground, allowing the device to measure reference current and adjust internal HSTL output driver impedance to match PCB trace characteristics. Calibration occurs automatically at power-up and can be retriggered via JTAG instruction, ensuring consistent signal integrity across voltage and temperature.

Is the CY7C1411KV18 pin-compatible with other devices in the CY7C14xxKV18 family?

No-while all variants share the same 165-ball FBGA package and core pinout (K, C, CQ, RPS, WPS, etc.), data bus width differs: CY7C1411KV18 uses D[7:0]/Q[7:0], whereas CY7C1426KV18 uses D[8:0]/Q[8:0], and CY7C1413KV18 uses D[17:0]/Q[17:0]. Nibble/byte write select pins also vary by configuration and are not interchangeable.