Infineon Technologies CY7C4041KV13-667FCXC

Overview

CY7C4041KV13-667FCXC from Cypress Semiconductor is a 72-Mbit QDR™-IV HP SRAM configured as 2M × 36, operating at 667 MHz with 5.0-cycle read latency and 3.0-cycle write latency, supporting concurrent dual-port DDR transactions for high-throughput packet buffering in network line cards.

For engineers reviewing the CY7C4041KV13-667FCXC datasheet, CY7C4041KV13-667FCXC pinout, CY7C4041KV13-667FCXC application, or CY7C4041KV13-667FCXC equivalent, key selection criteria include its 1334 MT/s random transaction rate, on-die termination programmability, per-bit deskew training, ECC-enabled soft error resilience (<0.01 FITs/Mb), and 361-ball FCBGA package compatibility with high-speed SerDes subsystems.

Technical Context

The device implements two independent bi-directional DDR data ports (A and B) sharing a single DDR address/command bus clocked by differential CK/CK#, enabling fully concurrent read/write operations without arbitration delay. Address sampling is split across CK edges: rising edge for port A, falling edge for port B.

It integrates JESD8-26-compliant JTAG 1149.1 test access, on-chip ECC for single-bit error correction, programmable bus inversion, address parity protection, and ZQ-based output impedance calibration - all optimized for deterministic low-latency memory access in telecom and datacom infrastructure.

Key Specifications

Pinout & Package

Package: 361-ball Fine-Pitch Chip Scale Ball Grid Array (FCBGA), 21 mm × 21 mm, RoHS-compliant, with 0.8 mm ball pitch and thermal pad center.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance dual-port SRAM applications.

Compared with IDT72T36150L10BG and AS7C36256PFS-100BIN, CY7C4041KV13-667FCXC delivers 33% higher transaction throughput, hardware ECC for field reliability, and automated deskew - making it uniquely suited for carrier-grade infrastructure where latency predictability and soft-error immunity are mandatory.

Availability

CY7C4041KV13-667FCXC is available at Aetrix Electronics and suitable for high-speed packet buffering, network processor interfacing, telecom baseband processing, and radar signal processing requiring stable component supply across long-lifecycle deployments.

Supply support for CY7C4041KV13-667FCXC 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 demanding infrastructure and industrial applications.

This device belongs to the QDR™-IV HP SRAM product line, engineered specifically for deterministic, low-latency, concurrent-access memory subsystems in networking, telecom, and defense electronics.

FAQ

What is the function of the ZQ pin?

The ZQ pin provides a reference for internal output driver impedance calibration. When connected to a precision 240 Ω resistor to VSS, the device dynamically adjusts its DQ and clock driver strengths to match system trace impedance - ensuring consistent signal integrity across voltage and temperature variations without external termination components.

Does CY7C4041KV13-667FCXC support asynchronous reset?

Yes - the RST# pin provides an active-low asynchronous reset that clears internal state, resets configuration registers, and places all outputs in high-impedance mode. It features an internal pull-down resistor and operates independently of clock domains, enabling safe power-up initialization and fault recovery in mission-critical systems.

How does address parity protection work on this SRAM?

Address parity is implemented via the AP input pin, which carries even parity over A[20:0] for the 2M × 36 configuration. The PE# output asserts low when a parity mismatch is detected during address latching. This flag remains asserted until cleared by writing to the Configuration Register - enabling system-level error logging and fail-safe response before memory corruption occurs.

Can both ports operate at full bandwidth simultaneously?

Yes - port A and port B are fully independent with separate data clocks (DKA/DKB, QKA/QKB) and command enable signals (LDA#/LDB#, RWA#/RWB#). The architecture guarantees concurrent read/write transactions at full 667 MHz DDR rates on both ports without contention, delivering the rated 1334 MT/s total random transaction rate under real-world mixed-access conditions.