Infineon Technologies S25FS256SAGMFV001

Overview

S25FS256SAGMFV001 from Infineon is a 256 Mb (32 MB) serial NOR flash memory with SPI Multi-I/O interface, operating at 1.8 V supply, supporting DDR Quad I/O read up to 80 MBps, hybrid and uniform sector erase options, and integrated hardware ECC for single-bit error correction. It is used in industrial and automotive boot code storage where high reliability, fast XIP-capable reads, and AEC-Q100 Grade 2 qualification (–40°C to +105°C) are required.

For engineers reviewing the S25FS256SAGMFV001 datasheet, S25FS256SAGMFV001 pinout, S25FS256SAGMFV001 application, or S25FS256SAGMFV001 equivalent, key selection criteria include 1.8 V operation, DDR Quad I/O bandwidth, OTP array size, hybrid sector layout flexibility, and AEC-Q100 Grade 2 temperature compliance.

Technical Context

This device implements Infineon's 65-nm MIRRORBIT™ Eclipse architecture with dual-plane memory organization, enabling concurrent program/erase suspend-resume operations. It supports both legacy SPI command subsets (compatible with S25FL-A/K/P/S families) and enhanced Multi-I/O protocols including QPI mode and SFDP v1.6 parameter discovery.

The internal ECC engine operates transparently during read cycles and corrects single-bit errors without software intervention, while the configurable protection scheme combines status register-based block lock, hardware WP# control, and password-protected Advanced Sector Protection (ASP) for secure boot code partitioning.

Key Specifications

Pinout & Package

Package: BGA-24, 6 × 8 mm, FAB024 footprint (5 × 5 ball array), Pb-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S25FS256SAGMFV001, the Cypress alternative offers identical functionality in a different package but sacrifices BGA mechanical robustness, while the Winbond part trades DDR speed and ECC for lower cost and simpler interface support - making it viable only in non-safety-critical, bandwidth-tolerant applications.

Availability

S25FS256SAGMFV001 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLCs, medical imaging boot loaders, and edge AI gateways requiring stable component supply, AEC-Q100 qualification, and long-term data integrity.

Supply support for S25FS256SAGMFV001 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, automotive microcontrollers, and secure memory solutions, with global R&D and manufacturing infrastructure.

The FS-S Flash product line delivers high-reliability, AEC-Q100-qualified serial NOR memory optimized for automotive and industrial boot code storage, featuring advanced data protection, DDR performance, and long-term endurance.

FAQ

Does S25FS256SAGMFV001 support Quad Peripheral Interface (QPI) mode?

Yes, the device supports QPI mode with 4-line bidirectional data transfer and command compression, reducing instruction overhead and improving effective bandwidth. QPI is enabled via configuration register bit CR3[1], and requires host MCU firmware support for command set translation and latency management per datasheet section 4.4.

What is the physical sector layout for hybrid erase option?

In hybrid sector mode, the device provides either eight 4-KB sectors plus one 32-KB sector (top or bottom), or eight 4-KB sectors plus one 224-KB sector (top or bottom), with all remaining sectors sized at 64 KB or 256 KB respectively. This layout is fixed per device variant and cannot be reconfigured in-system.

How does the internal ECC operate during read cycles?

The hardware ECC engine automatically checks each 512-byte page during read operations and corrects single-bit errors transparently. No software intervention or additional latency is introduced unless a multi-bit error occurs, which triggers an uncorrectable error flag in the status register and halts the read sequence.

Is the OTP array reprogrammable after initial programming?

No, the 1024-byte OTP array is permanently programmed using high-voltage pulses and cannot be erased or rewritten. Once written, bits can only transition from '1' to '0'; any attempt to reprogram results in permanent corruption. Programming must be performed once, during final test or secure provisioning.