Infineon Technologies S25FS256SAGMFV003

Overview

S25FS256SAGMFV003 from Infineon Technologies is a 256 Mb (32 MB) serial NOR flash memory IC with SPI Multi-I/O interface, 1.8 V supply, and industrial temperature grade (–40°C to +85°C). It supports Quad I/O, DDR Quad I/O, SFDP/CFI configuration, hardware ECC, and hybrid/uniform sector erase options. Used in boot code storage for embedded microcontrollers in industrial control systems.

For engineers reviewing the S25FS256SAGMFV003 datasheet, S25FS256SAGMFV003 pinout, S25FS256SAGMFV003 application, or S25FS256SAGMFV003 equivalent, key selection criteria include 133 MHz fast read rate, 80 MBps DDR Quad I/O throughput, 100,000 program-erase cycles, 20-year data retention, and AEC-Q100 Grade 3 qualification for automotive infotainment boot memory.

Technical Context

This device implements Infineon's Eclipse architecture with 65-nm MIRRORBIT™ technology, enabling high-density NOR flash with deterministic latency for XIP execution. It supports both SDR and DDR SPI modes, configurable 24-/32-bit addressing, and dual-bank erase suspend/resume functionality.

The flash integrates serial command subsets compatible with S25FL-P/S families and Multi-I/O commands aligned with S25FL-S devices. Its internal ECC engine corrects single-bit errors on-the-fly during read operations without host intervention.

Key Specifications

Pinout & Package

Package: 24-ball BGA (FAC024 footprint: 4 × 6 ball array, 0.5 mm pitch, 6 mm × 8 mm body).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NOR flash memory applications.

Compared with S25FS256SAGMFV003, the Cypress alternative offers identical functionality in a different package, while the Winbond part trades DDR performance and ASP security for lower unit cost and simpler integration-making it suitable only where those features are unused.

Availability

S25FS256SAGMFV003 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging system configuration requiring stable component supply and long-term lifecycle support.

Supply support for S25FS256SAGMFV003 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 German semiconductor manufacturer specializing in power management, sensing, and memory solutions for industrial, automotive, and IoT markets.

The FS-S Flash family targets high-reliability embedded systems needing fast, secure, and long-life non-volatile storage-especially where XIP execution, AEC-Q100 compliance, and field-upgradable firmware are mandatory.

FAQ

What is the maximum clock frequency supported in DDR mode?

The S25FS256SAGMFV003 supports DDR Quad I/O operation at up to 80 MHz clock frequency, delivering 80 MBps effective throughput. This is specified under AC characteristics section 6.5 of the datasheet, with timing validated across the full industrial temperature range and voltage supply window (1.7–2.0 V).

Does this device support execute-in-place (XIP) operation?

Yes, the device supports continuous read mode for XIP execution directly from flash memory. It implements burst wrap addressing and low-latency read commands (including Fast Read and Quad I/O) that minimize wait states, enabling deterministic instruction fetch timing required by ARM Cortex-M and RISC-V cores.

How is the OTP memory region protected from accidental overwrite?

The 1024-byte OTP array is write-locked after initial programming via dedicated One-Time Program commands. Once locked, no further writes are possible-even with WP# asserted or status register modification. The lock state is permanent and verified by reading the OTP lock bit in the configuration register.

Can the device be used in automotive applications requiring AEC-Q100 Grade 1?

No-S25FS256SAGMFV003 is qualified for AEC-Q100 Grade 3 (–40°C to +85°C) and Grade 2 (–40°C to +105°C), but not Grade 1 (–40°C to +125°C). For Grade 1 applications, Infineon offers the pin-compatible S25FS256SAGMFV013 variant with extended temperature validation and additional qualification testing.