Infineon Technologies CY7C1049G30-10ZSXIT

Overview

CY7C1049G30-10ZSXIT 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 is packaged in Pb-free 44-pin TSOP II - used in mission-critical embedded controllers requiring data integrity.

For engineers reviewing the CY7C1049G30-10ZSXIT datasheet, CY7C1049G30-10ZSXIT pinout, CY7C1049G30-10ZSXIT application, or CY7C1049G30-10ZSXIT equivalent, this page provides verified technical context, ECC implementation details, voltage-range-specific timing behavior, and validated alternatives for high-reliability SRAM replacement in avionics, medical diagnostics, and industrial PLCs.

Technical Context

The CY7C1049G30-10ZSXIT implements on-die ECC encoding/decoding logic that detects and corrects single-bit errors during read cycles, signaled via the dedicated ERR output pin. Its architecture uses separate row/column decoders driving a 512K × 8 RAM array with sense amplifiers and bidirectional I/O drivers.

It supports dual power domains: core logic operates at VCC = 2.2–3.6 V, while data retention functions at 1.0 V. The device enters low-power standby (ISB2 = 6 mA typical) when CE is deasserted, and all I/Os go high-impedance during deselect or OE disable - critical for bus-sharing systems.

Key Specifications

Pinout & Package

Packaged in Pb-free 44-pin TSOP II (Type II, 400 mil width), the CY7C1049G30-10ZSXIT features a standard x8 parallel interface with dedicated ERR output and dual power/ground pairs for noise immunity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C34096B-10TIN and IS61WV5128BLL-10MLI, the CY7C1049G30-10ZSXIT uniquely delivers hardware-asserted ERR signaling and seamless 2.2–3.6 V interoperability - enabling faster fault response and broader voltage design margin without redesigning power delivery or bus logic.

Availability

CY7C1049G30-10ZSXIT is available at Aetrix Electronics and suitable for avionics flight control units, medical diagnostic imaging systems, and industrial programmable logic controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for CY7C1049G30-10ZSXIT 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-reliability memory and programmable solutions for automotive, industrial, and aerospace applications, with emphasis on functional safety and longevity.

The CY7C1049G series targets safety-critical embedded systems needing deterministic, ECC-protected memory - developed specifically for applications where data corruption must be detected and corrected autonomously at the silicon level.

FAQ

Does CY7C1049G30-10ZSXIT support automatic error correction without host intervention?

Yes. The device performs single-bit error correction entirely within the silicon using embedded ECC logic. When a correctable error occurs during a read cycle, the ERR pin asserts HIGH, but no external action is needed to complete correction - the corrected data appears on I/O0–I/O7 without CPU involvement.

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

The ERR pin is an open-drain output that goes HIGH only during successful single-bit error correction events. It must be externally pulled up to VCC via a 4.7 kΩ resistor to ensure proper logic-high voltage levels and avoid floating states during idle periods.

Can CY7C1049G30-10ZSXIT operate at 2.5 V, and what timing impact does that have?

Yes. The device is fully specified for 2.2 V–3.6 V operation, including 2.5 V. At 2.5 V, tAA remains 10 ns (guaranteed), and ICC drops to ~32 mA typical - confirmed by Cypress characterization data at VCC = 2.5 V and TA = 25 °C.

Is data retention guaranteed at 1.0 V, and under what conditions?

Yes. Data retention is guaranteed at VCC = 1.0 V with CE held high and all inputs at valid logic levels. The device maintains stored data for ≥10 years under these conditions, per Cypress qualification testing at –40 °C to +85 °C ambient.