Infineon Technologies CY7C1049G-10ZSXI

Overview

CY7C1049G-10ZSXI from Cypress Semiconductor is a 4-Mbit (512K × 8) CMOS static RAM with embedded single-bit error-correcting code (ECC), designed for high-reliability industrial memory subsystems. It operates across three voltage ranges (1.65–2.2 V, 2.2–3.6 V, 4.5–5.5 V), delivers 10 ns access time (tAA), features TTL-compatible I/Os, and includes an ERR output pin for real-time ECC event indication in CY7C1049GE variants - used in mission-critical data logging and telecom baseband buffers.

For engineers reviewing the CY7C1049G-10ZSXI datasheet, CY7C1049G-10ZSXI pinout, CY7C1049G-10ZSXI application, or CY7C1049G-10ZSXI equivalent, key selection criteria include ECC-enabled data integrity at 10 ns speed, multi-voltage support for legacy and low-power systems, industrial temperature range (–40°C to +85°C), and SOJ-36 package compatibility with space-constrained PCB layouts.

Technical Context

This SRAM implements on-die ECC encoding/decoding logic that detects and corrects single-bit errors during read cycles without automatic write-back. The ERR pin asserts HIGH only on CY7C1049GE devices - CY7C1049G-10ZSXI lacks ERR functionality per its ordering code suffix "G" (non-E variant).

It supports dual or single chip-enable configurations, uses standard asynchronous control (CE, OE, WE), and places all eight I/O lines (I/O0–I/O7) into high-impedance state when CE is HIGH or OE is deasserted. Data retention is guaranteed down to 1.0 V with ISB2 = 6 mA typical at full industrial voltage ranges.

Key Specifications

Pinout & Package

Package: 36-pin Small Outline J-Lead (SOJ), RoHS-compliant, lead-free finish. Pin count and layout conform to JEDEC MS-025AC standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV5128BLL-10MLI and 23LCV512-I/P, CY7C1049G-10ZSXI uniquely delivers integrated ECC, multi-voltage support, and true 10 ns parallel access - making it the sole option for retrofitting ECC into existing 8-bit microcontroller memory buses without redesign.

Availability

CY7C1049G-10ZSXI is available at Aetrix Electronics and suitable for industrial data logging, telecom baseband buffering, medical imaging cache, and ruggedized HMI display frame buffer applications requiring stable component supply and long-term lifecycle assurance.

Supply support for CY7C1049G-10ZSXI 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, PSoC programmable systems-on-chip, and USB/USB-C solutions.

CY7C1049G belongs to Cypress's legacy fast SRAM portfolio, engineered specifically for industrial and telecom systems demanding deterministic timing, ECC-enhanced data integrity, and multi-voltage interoperability without external logic.

FAQ

Does CY7C1049G-10ZSXI include an ERR pin?

No. The "G" suffix in CY7C1049G-10ZSXI indicates the non-ECC-indicator variant; only CY7C1049GE parts feature the ERR output pin. This device performs single-bit error correction internally but provides no external signal to report correction events.

What is the maximum clock frequency supported for burst reads?

This is an asynchronous SRAM - it has no internal clock. Maximum effective throughput is determined by tAA (10 ns), tOH (output hold), and bus setup/hold timing. At 10 ns access, sustained random read rates reach ~80–90 MHz depending on CE/OE assertion timing and PCB trace length.

Can CY7C1049G-10ZSXI operate at 2.5 V?

Yes. Its middle voltage range is 2.2 V to 3.6 V, so 2.5 V falls within specification. ICC = 38 mA typical and tAA = 10 ns are both guaranteed at 2.5 V per datasheet test conditions using VCC = 3 V as reference point.

Is the SOJ-36 package lead-free and RoHS compliant?

Yes. The "Z" in -10ZSXI denotes lead-free (Pb-free) construction, and the "SXI" suffix confirms industrial temperature grade and RoHS compliance per Cypress's ordering nomenclature and packaging documentation.