Infineon Technologies CY7C1049G30-10VXIT

Overview

CY7C1049G30-10VXIT from Cypress Semiconductor is a 4-Mbit (512K × 8) CMOS static RAM with embedded single-bit error-correcting code (ECC), TTL-compatible I/O, and ERR output for real-time error detection/correction. It operates across 2.2 V–3.6 V, delivers 10 ns access time (tAA), supports industrial temperature range (–40 °C to +85 °C), and uses a 44-pin TSOP II package - deployed in mission-critical industrial controllers requiring data integrity assurance.

For engineers reviewing the CY7C1049G30-10VXIT datasheet, CY7C1049G30-10VXIT pinout, CY7C1049G30-10VXIT application, or CY7C1049G30-10VXIT equivalent, this page provides verified functional identity, ECC implementation details, ERR signal behavior, voltage-range-specific timing, and validated alternative options for memory subsystem hardening.

Technical Context

The CY7C1049G30-10VXIT implements on-die ECC encoding/decoding logic that detects and corrects single-bit errors during read cycles without automatic write-back. Its ERR pin asserts HIGH only when correction occurs, enabling external fault logging or system-level recovery actions.

It supports dual chip-enable architecture (CE1/CE2) and standard SRAM control protocol: reads require CE and OE low; writes require CE and WE low. All I/Os enter high-impedance state when CE is high or OE is deasserted - ensuring clean bus sharing in multi-device systems.

Key Specifications

Pinout & Package

Package: 44-pin Thin Small Outline Package Type II (TSOP II), RoHS-compliant, surface-mount, 0.8 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV5128BLL-10MLI and 23LCV512-I/P, the CY7C1049G30-10VXIT uniquely delivers parallel-interface speed, on-die ECC with observable ERR signaling, and industrial-grade voltage/timing compliance - making it irreplaceable in safety-critical, high-throughput memory subsystems.

Availability

CY7C1049G30-10VXIT is available at Aetrix Electronics and suitable for industrial PLCs, medical imaging subsystems, railway signaling controllers, and avionics health monitors requiring stable component supply, long-term lifecycle support, and guaranteed ECC functionality.

Supply support for CY7C1049G30-10VXIT 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 global leader in high-reliability memory and programmable solutions, founded in 1982 and headquartered in San Jose, CA.

The CY7C1049G series was designed specifically for industrial and safety-critical embedded systems requiring hardware-based data integrity - targeting applications where uncorrected memory errors pose functional or regulatory risk.

FAQ

Does CY7C1049G30-10VXIT support automatic error correction write-back?

No. The device detects and corrects single-bit errors during read operations but does not perform automatic write-back to the memory array. Corrected data appears on I/O lines, and the ERR pin signals the event - external logic or firmware must decide whether to rewrite the corrected value if persistent correction is required.

What is the function of the ERR pin, and how should it be terminated?

The ERR pin is an open-drain output that asserts HIGH only when a single-bit error is detected and corrected during a read cycle. It must be externally pulled up to VCC via a 4.7 kΩ resistor to ensure proper logic-level signaling and avoid floating states that could trigger false alarms in monitoring circuitry.

Can CY7C1049G30-10VXIT operate at 1.8 V?

No. This variant (G30 suffix) is specified only for 2.2 V–3.6 V operation. Devices rated for 1.65 V–2.2 V use the G18 suffix (e.g., CY7C1049G18). Using 1.8 V on CY7C1049G30-10VXIT violates its absolute maximum ratings and may cause timing failures or data corruption.

Is the 44-pin TSOP II package lead-free and RoHS compliant?

Yes. The "VXIT" suffix denotes a RoHS-compliant, lead-free, halogen-free 44-pin TSOP II package per JEDEC MO-141AC, qualified for industrial temperature range and reflow-soldered per IPC/JEDEC J-STD-020D.1 moisture sensitivity level is MSL-3.