Infineon Technologies CY7C1049GN30-10ZSXI

Overview

CY7C1049GN30-10ZSXI from Infineon Technologies (formerly Cypress) is a 4-Mbit (512K × 8) asynchronous CMOS static RAM with 10 ns access time, TTL-compatible I/Os, and dual-voltage operation (2.2 V–3.6 V). It supports industrial temperature range (–40 °C to +85 °C), delivers 38 mA typical active current and 6 mA typical standby current, and uses a 44-pin TSOP II package for high-density memory buffering in real-time control systems.

For engineers reviewing the CY7C1049GN30-10ZSXI datasheet, CY7C1049GN30-10ZSXI pinout, CY7C1049GN30-10ZSXI application, or CY7C1049GN30-10ZSXI equivalent, key selection criteria include verified 10 ns tAA timing at 3.0 V, ISB2 ≤ 6 mA standby power under CMOS input conditions, NC pin mapping per TSOP II layout, and compatibility with legacy 512K×8 SRAM-based address/data bus architectures.

Technical Context

This SRAM implements a fully asynchronous read/write interface with independent Chip Enable (CE), Output Enable (OE), and Write Enable (WE) controls. Address decoding is performed via 19-bit address inputs (A0–A18), supporting full 512K-word access without internal banking or refresh logic.

Data I/O lines (I/O0–I/O7) operate in bidirectional, three-state mode: high-impedance when CE is HIGH or OE is deasserted during reads. The device guarantees 1.0 V data retention and meets industrial-grade thermal resistance (θJA = 68.85 °C/W) in its 44-pin TSOP II package.

Key Specifications

Pinout & Package

Package: 44-pin Thin Small Outline Package Type II (TSOP II), 400 mil width, lead-free, surface-mountable with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS6C4008-10TIN and IS61LV5128AL-10MLI, CY7C1049GN30-10ZSXI uniquely guarantees 1.0 V data retention and industrial-grade thermal performance in TSOP II, making it the only choice for safety-critical brownout resilience in embedded control.

Availability

CY7C1049GN30-10ZSXI is available at Aetrix Electronics and suitable for industrial PLC data buffering, automotive ECU calibration storage, and medical imaging front-end digitization requiring stable component supply across extended product lifecycles.

Supply support for CY7C1049GN30-10ZSXI 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, connectivity, and memory solutions for industrial, automotive, and IoT applications.

CY7C1049GN30-10ZSXI belongs to Infineon's legacy Cypress SRAM portfolio, designed specifically for high-reliability, low-latency parallel memory interfacing in real-time embedded systems where refresh-free operation and deterministic timing are mandatory.

FAQ

What is the maximum clock frequency supported for burst read/write cycles?

CY7C1049GN30-10ZSXI is an asynchronous SRAM with no internal clock; it relies on external address and control timing. Its 10 ns access time supports effective data rates up to 100 MHz in systems with matched trace lengths and proper setup/hold margins. Maximum reliable operation depends on external controller timing compliance-not device clocking.

Can this SRAM be used with a 1.8 V microcontroller I/O bank?

No-CY7C1049GN30-10ZSXI requires VCC between 2.2 V and 3.6 V and is not 1.8 V tolerant. Its VIH(min) is 2.0 V at 2.2–2.7 V VCC, and I/O pins are not designed for 1.8 V signaling. Direct connection to 1.8 V logic would violate input voltage specifications and risk data corruption or latch-up.

Are the NC pins on the 44-pin TSOP II required to be grounded?

No-NC pins (1, 21–24, 44) are unconnected internally and must remain floating or be tied to GND only for mechanical stability or EMI reduction per PCB layout best practices. Grounding them is permissible but not electrically required; leaving them unconnected does not affect functionality or reliability.

Does this part support battery backup for data retention during main power loss?

Yes-CY7C1049GN30-10ZSXI guarantees data retention down to 1.0 V VCC, enabling integration with simple coin-cell or supercapacitor backup circuits. When main VCC drops below 2.2 V, the device automatically enters retention mode if CE remains asserted and inputs are held valid, preserving contents for hours depending on leakage and backup source capacity.