Infineon Technologies CY7C4042KV13-933FCXC

Overview

CY7C4042KV13-933FCXC from Cypress Semiconductor is a 72-Mbit QDR™-IV XP SRAM configured as 2M × 36, operating at up to 933 MHz with 2132 MT/s total random transaction rate, 8.0-cycle read latency, and dual independent DDR data ports (A/B) for concurrent access in high-bandwidth networking and packet buffering applications.

For engineers reviewing the CY7C4042KV13-933FCXC datasheet, CY7C4042KV13-933FCXC pinout, CY7C4042KV13-933FCXC application, or CY7C4042KV13-933FCXC equivalent, key selection criteria include its 933 MHz maximum frequency, 1.3 V core voltage, 1.2 V I/O supply, on-die termination, per-bit deskew training, and JTAG 1149.1 compliance for production testability.

Technical Context

This QDR-IV XP SRAM uses an 8-bank architecture enabling one access per bank per clock cycle, with address latching on rising/falling edges of differential CK/CK# to separate Port A and Port B command timing. It supports two-word burst transfers on all accesses and employs DDR signaling on both data and address/command paths.

Control signaling runs at SDR while data and address paths use DDR; three differential clock domains exist-(CK, CK#) for address/command, (DKA/DKB pairs) for data input, and (QKA/QKB pairs) for data output. Internal ECC corrects single-bit errors, achieving <0.01 FITs/Mb soft error rate, and ZQ-based impedance calibration ensures signal integrity across HSTL/SSTL/POD I/O standards.

Key Specifications

Pinout & Package

Available in 361-ball FCBGA package (21 mm × 21 mm, Pb-free), with ball pitch of 1.0 mm and thermal pad exposed on underside for enhanced heat dissipation in high-power memory subsystems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T36120L10BG and MT47H128M16RT-25E, CY7C4042KV13-933FCXC delivers 8.5× higher random transaction rate, integrated ECC for radiation-hardened operation, and autonomous impedance tuning - making it uniquely suited for next-gen 100G+ infrastructure where latency, reliability, and signal integrity are non-negotiable.

Availability

CY7C4042KV13-933FCXC is available at Aetrix Electronics and suitable for high-speed network switch buffers, telecom line card packet memory, PCIe-based accelerator caches, and real-time radar signal processing requiring stable component supply across extended product lifecycles.

Supply support for CY7C4042KV13-933FCXC 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 networking, automotive, and industrial applications, with headquarters in San Jose, CA.

CY7C4042KV13 belongs to the QDR™-IV XP SRAM product line, engineered specifically for ultra-low-latency, high-throughput packet buffering and real-time signal processing in carrier-grade infrastructure equipment.

FAQ

What is the difference between CY7C4042KV13-933FCXC and CY7C4042KV13-1066FCXC?

The -933FCXC variant is rated for 933 MHz maximum operating frequency and 2132 MT/s random transaction rate, while the -1066FCXC operates up to 1066 MHz with identical pinout and functionality. The -933 version targets systems where thermal or power constraints limit clock speed, offering lower dynamic power consumption (4000 mA vs. 4500 mA at ×36) without sacrificing dual-port concurrency or ECC features.

Does CY7C4042KV13-933FCXC support automatic impedance calibration during operation?

Yes - the device performs on-die termination (ODT) calibration using the ZQ pin connected to a 240 Ω ±1% external resistor. Calibration occurs at power-up and can be re-triggered via configuration register command. It adjusts driver output impedance and ODT values for CK, address/command, and DQ signals independently to maintain signal integrity across voltage and temperature variations.

Can the address parity feature be disabled?

No - address parity (AP input and PE# output) is always active and cannot be disabled via configuration registers. AP must be driven with even parity over A[20:0], and any mismatch asserts PE# low until cleared by writing to the Configuration Register's PARITY_CLEAR bit. This hardwired protection ensures fault detection in safety-critical telecom and aerospace applications.

Is JTAG boundary scan supported at the full 933 MHz data rate?

No - JTAG 1149.1 operation is limited to ≤25 MHz TCK frequency per JESD8-26 compliance. The TAP controller functions independently of the main memory interface and remains fully operational for test and debug even when the SRAM is running at 933 MHz. TRST#, TMS, TDI, and TDO pins retain 1.3-V LVCMOS signaling regardless of VDDQ setting.