Infineon Technologies S25FS256SAGMFI003

Overview

S25FS256SAGMFI003 from Infineon 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 industrial microcontrollers and FPGA configuration.

For engineers reviewing the S25FS256SAGMFI003 datasheet, S25FS256SAGMFI003 pinout, S25FS256SAGMFI003 application, or S25FS256SAGMFI003 equivalent, key selection factors 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 control modules.

Technical Context

This device implements Infineon's Eclipse architecture with 65-nm MIRRORBIT™ technology, enabling high-density NOR flash with deterministic latency and XIP-capable continuous read mode. It supports both 24-bit and 32-bit addressing, SPI clock modes 0/3, and full command compatibility with S25FL-P/S25FL-S families.

The embedded algorithm handles automatic ECC generation/correction for single-bit errors, page programming with suspend/resume, and hybrid sector erase (eight 4-KB + one 32-KB sectors) or uniform 256-KB block erase. Security includes OTP array, hardware/software block protection, and password-controlled Advanced Sector Protection.

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 S25FS256SAGMFI003, the S25FS256SAGNFI000 provides identical functionality in a surface-mount WSON package for simplified assembly, while the W25Q256JWSIQ trades DDR performance and ASP security for broader ecosystem driver support and lower unit cost.

Availability

S25FS256SAGMFI003 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS ECUs, FPGA configuration systems, and edge AI gateways requiring stable component supply and long-term lifecycle assurance.

Supply support for S25FS256SAGMFI003 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 applications.

The FS-S Flash product line delivers high-reliability, low-voltage serial NOR flash optimized for secure boot, real-time code execution, and long-life embedded storage in harsh environments.

FAQ

What is the maximum supported SPI clock frequency for DDR Quad I/O mode?

The S25FS256SAGMFI003 supports DDR Quad I/O at up to 80 MHz clock frequency, delivering 80 MBps effective read throughput. This is specified in the AC characteristics section (Rev. *O, Table 6.5) and validated across the full industrial temperature range. Exceeding 80 MHz in DDR mode may result in timing violations and data corruption.

Does this part include built-in error correction, and how is it implemented?

Yes - the device integrates hardware-based ECC that automatically generates and checks Hamming codes for every 512-byte sector. Single-bit errors are corrected transparently during read operations without host intervention. No software ECC driver or additional memory overhead is required, and correction occurs inline with data output.

Can the OTP array be programmed multiple times, and what is its primary use case?

No - the 1024-byte OTP array is one-time programmable and permanently locked after initial write. It is commonly used to store cryptographic keys, device-specific identifiers, or calibration constants that must remain immutable across the product lifetime, such as in medical or automotive safety-critical systems.

Is the FAC024 BGA package lead-free and RoHS compliant?

Yes - the FAC024 package is Pb-free and fully RoHS 2015/863/EU compliant, with NiPdAu surface finish on all balls. Infineon confirms halogen-free status per IEC 61249-2-21, and the part meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for standard SMT assembly processes.