Infineon Technologies CY7C1041G30-10VXI

Overview

CY7C1041G30-10VXI from Infineon Technologies (formerly Cypress) is a 4-Mbit (256K × 16-bit) CMOS static RAM with embedded single-bit error-correcting code (ECC), designed for high-reliability industrial memory subsystems operating at 10 ns access time under 2.2–3.6 V supply. It features TTL-compatible I/O, ERR output pin for real-time ECC event indication, and low standby current (6 mA typical). Used in programmable logic controllers and safety-critical data buffers where bit-flip resilience is required.

For engineers reviewing the CY7C1041G30-10VXI datasheet, CY7C1041G30-10VXI pinout, CY7C1041G30-10VXI application, or CY7C1041G30-10VXI equivalent, key selection criteria include verified ECC correction capability, 10 ns tAA timing across 2.2–3.6 V operation, ERR pin functionality, 48-ball VFBGA (BVXI) package mapping, and industrial temperature support (–40 °C to +85 °C).

Technical Context

This SRAM integrates dedicated ECC encoder/decoder circuitry that detects and corrects single-bit errors on every read cycle without requiring external logic. The ERR pin asserts HIGH only during successful correction events - no automatic write-back occurs, preserving deterministic timing behavior.

It supports byte-level writes via independent BHE (I/O8–I/O15) and BLE (I/O0–I/O7) controls, and operates across three voltage ranges: 1.65–2.2 V, 2.2–3.6 V, and 4.5–5.5 V. The -30 speed grade guarantees 10 ns address-to-data access (tAA) at 2.2–3.6 V, with active current of 38 mA typical and data retention down to 1.0 V.

Key Specifications

Pinout & Package

48-ball VFBGA (BVXI) package with 0.5 mm ball pitch, JEDEC-compliant mechanical outline, and exposed thermal pad not connected internally. Pin functions mapped per Figure 2 in datasheet Rev. *N.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV25616EDBLL-10MLI and AS6C4008-10TIN, CY7C1041G30-10VXI delivers verified on-die ECC correction with hardware-asserted ERR signaling - reducing firmware validation scope and eliminating external error-handling components while maintaining identical 10 ns timing and industrial temperature compliance.

Availability

CY7C1041G30-10VXI is available at Aetrix Electronics and suitable for programmable logic controllers, industrial HMIs, and railway signaling systems requiring stable component supply across extended product lifecycles.

Supply support for CY7C1041G30-10VXI 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, automotive MCUs, and high-reliability memory solutions.

CY7C1041G30-10VXI belongs to Infineon's legacy Cypress SRAM portfolio, engineered specifically for industrial and transportation applications demanding deterministic timing, ECC resilience, and long-term supply assurance.

FAQ

Does CY7C1041G30-10VXI support automatic error correction write-back?

No. The device performs single-bit error correction during read cycles and asserts the ERR pin, but does not automatically rewrite corrected data back to the memory array. Host firmware must initiate any corrective write if persistent storage of corrected values is required. This design preserves strict timing predictability and avoids unintended write amplification.

What is the function of the ERR pin, and how is it electrically driven?

The ERR pin is an open-drain output that drives HIGH only when a single-bit error is detected and corrected during a read access. It remains LOW or high-impedance otherwise. A pull-up resistor (typically 4.7 kΩ to VCC) is required externally to generate a valid logic HIGH level for host interrupt or status monitoring.

Can CY7C1041G30-10VXI operate at 1.8 V supply?

No. The "30" speed grade is specified only for the 2.2–3.6 V VCC range. For 1.65–2.2 V operation, the CY7C1041G18-15VXI variant (15 ns access) must be used. Attempting 1.8 V operation on the -30 grade violates datasheet limits and risks timing violations or ECC functional failure.

How does the BVXI VFBGA package differ from BVJXI in pin mapping?

The BVXI and BVJXI packages share identical mechanical dimensions and ball count, but swap the physical locations of upper-byte (I/O8–I/O15) and lower-byte (I/O0–I/O7) I/O balls. BVXI follows standard byte ordering; BVJXI reverses it per JEDEC compliance. Layouts must match the specific package grade to avoid data bus inversion.