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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Spansion S25FS256SDSMFI000

Name: S25FS256SDSMFI000
Brand: Spansion
SKU: S25FS256SDSMFI000
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S25FS256SDSMFI000

Manufacturer:: Spansion

Category:: Memory

Package:: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: S25FS256SDSMFI000.pdf

Description:: IC FLASH 256MBIT SPI/QUAD 16SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:133

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Product details

Overview

S25FS256SDSMFI000 from Infineon is a 256 Mb (32 MB) serial NOR flash memory IC with SPI Multi-I/O interface, 1.8 V supply, industrial temperature grade (–40°C to +85°C), and BGA-24 6 × 8 mm package (FAB024 footprint). It supports Quad I/O, DDR Quad I/O read up to 80 MBps, 100,000 program-erase cycles, and hardware ECC for single-bit error correction.

For engineers reviewing the S25FS256SDSMFI000 datasheet, S25FS256SDSMFI000 pinout, S25FS256SDSMFI000 application, or S25FS256SDSMFI000 equivalent, key selection criteria include hybrid/uniform sector erase options, SFDP/CFI configuration support, OTP array size, AEC-Q100 grade compatibility, and DDR vs. SDR timing margins in embedded boot memory designs.

Technical Context

This device implements Infineon's Eclipse architecture with 65-nm MIRRORBIT™ technology, enabling high-density serial NOR operation with deterministic latency for XIP (eXecute-In-Place) execution. It supports both standard SPI modes (0/3) and extended addressing (24-/32-bit), with command subsets compatible with S25FL-P/S series for migration paths.

The flash integrates dual-mode protection: status register-based block protection and password-controlled Advanced Sector Protection (ASP) over individual 4-KB sectors. Internal hardware ECC operates transparently during read, eliminating software overhead while ensuring data integrity across 20-year retention.

Key Specifications

Parameter	Value and Actual Design Meaning
Density	256 Mbit (32 MB) - sufficient for full firmware images and parameter storage in resource-constrained microcontrollers
Supply Voltage	1.7 V to 2.0 V - optimized for low-power 1.8 V system rails, reducing I/O buffer power and noise coupling
Read Bandwidth	80 MBps DDR Quad I/O - enables real-time code execution from flash without local RAM caching
Erase Endurance	100,000 cycles minimum - supports field-updatable firmware with frequent reprogramming in industrial gateways
Data Retention	20 years minimum at 85°C - validated for long-lifecycle deployments in unattended infrastructure equipment
Temperature Grade	Industrial (–40°C to +85°C) - qualified for operation in factory automation controllers and outdoor edge nodes
Package	BGA-24, 6 × 8 mm, FAB024 (5 × 5 ball array) - surface-mount compatible with automated PCB assembly and thermal management via exposed pad

Pinout & Package

Package: BGA-24, 6 × 8 mm body, FAB024 footprint (5 × 5 ball array), Pb-free, with exposed thermal pad (ball A1–E5).

Pin/Terminal	Circuit Role	Design Meaning
VCC	Power supply input	1.8 V core and I/O supply; decoupling required within 5 mm of ball A3/A4
VSS	Ground reference	Signal and power ground; connects to PCB thermal pad for heat dissipation
CS#	Chip select input	Active-low enable for command latching; must be deasserted between commands to avoid bus contention
SCK	Serial clock input	Supports up to 133 MHz SDR or 80 MHz DDR; phase/polarity configurable per SPI mode 0/3
IO0–IO3	Multi-I/O bidirectional data lines	Configurable as SI/SO/WP#/RESET# in single/dual/quad mode; IO3 doubles as hardware reset input
WP#	Write protect input	Hardware lock for top/bottom 64 KB; overrides software protection when asserted
RESET#	Hardware reset input	Asynchronous reset of internal state machine; tied high via 10 kΩ pull-up if unused

Key Features

Feature	Design Value
DDR Quad I/O Read	80 MBps throughput enables direct code execution from flash in Cortex-M7/M33 applications without prefetch stalls
Hybrid Sector Erase	Mixed 4-KB/32-KB/64-KB physical sectors allow fine-grained firmware updates while preserving critical bootloader regions
Hardware ECC	On-the-fly single-bit error correction eliminates need for external error-handling logic or redundant storage
OTP Array	1024-byte one-time programmable space stores cryptographic keys or calibration data with irreversible write locking
Advanced Sector Protection	Password-controlled per-sector read/write lock prevents unauthorized access to secure silicon region or firmware partitions

Applications

Industrial PLC Firmware Storage

Automotive ADAS Boot Memory

Use Scenario: Storing firmware and configuration data for programmable logic controllers operating in harsh factory environments with wide temperature swings and EMI exposure.

IC Role / Device Role / Timing Role: Primary boot memory mapped into MCU address space; provides deterministic read latency for real-time task scheduling.

Use Value: 20-year data retention and 100K erase cycles ensure reliable operation over 15+ year product lifecycles without field replacement.

Use Scenario: Holding boot code and safety-critical sensor fusion algorithms in automotive camera modules requiring AEC-Q100 qualification.

IC Role / Device Role / Timing Role: SPI-connected NOR flash used for cold-boot initialization of SoC before DRAM initialization; supports XIP execution.

Use Value: Industrial Plus grade (–40°C to +105°C) and hardware ECC meet ISO 26262 ASIL-B requirements for fault-tolerant memory access.

Medical Imaging Device Parameter Storage

Smart Grid Communication Module

Use Scenario: Secure storage of calibration coefficients, user preferences, and regulatory audit logs in portable ultrasound and MRI control units.

IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed via SPI during power-up and runtime; OTP region holds cryptographic keys for HIPAA-compliant data encryption.

Use Value: Password-protected Advanced Sector Protection prevents tampering with calibration data, satisfying FDA 21 CFR Part 11 traceability requirements.

Use Scenario: Firmware and protocol stack storage in DIN-rail mounted smart meters and substation RTUs communicating over DLMS/COSEM and IEC 61850.

IC Role / Device Role / Timing Role: Dual-role memory: boot image loader and field-upgradable application partition accessed via SFDP-defined parameter tables.

Use Value: SFDP and CFI support enables automatic configuration detection by host bootloader, simplifying firmware update tooling across heterogeneous meter models.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Cypress S25FS256SAGMF101	Same die, identical pinout and timing, but automotive grade (AEC-Q100 Grade 2, –40°C to +105°C)	Required for under-hood automotive ECUs where ambient exceeds 85°C	Select when extended temperature range and automotive qualification are mandatory
Winbond W25Q256JWSIQ	256 Mb, 1.8 V, but no DDR mode support; max Quad I/O = 40 MBps; no hardware ECC	Suitable for cost-sensitive consumer IoT where ECC and DDR bandwidth are noncritical	Choose only if DDR read performance and on-die error correction are not required

Compared with S25FS256SDSMFI000, the Cypress alternative adds automotive qualification at same performance, while the Winbond part trades DDR capability and ECC for lower cost and broader commercial availability-making it viable only in non-safety-critical, thermally benign applications.

Availability

S25FS256SDSMFI000 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS modules, medical imaging systems, and smart grid communication devices requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-aligned reliability.

Supply support for S25FS256SDSMFI000 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, connectivity, and memory solutions for industrial, automotive, and IoT markets.

The FS-S Flash family targets high-reliability embedded systems needing deterministic boot performance, long data retention, and robust security features-designed specifically for mission-critical firmware storage where failure is not an option.

FAQ

What is the function of the IO3 pin on S25FS256SDSMFI000?

IO3 serves as a dual-function terminal: in standard SPI mode, it acts as the fourth I/O line (IO3) for Quad I/O operations; when pulled low during power-up, it functions as RESET# to asynchronously reset the internal state machine. Its behavior is determined by voltage level at power-on and cannot be dynamically reconfigured during operation.

Does S25FS256SDSMFI000 support 32-bit addressing?

Yes, it supports both 24-bit and 32-bit addressing modes via the Extended Address Register (EAR). When enabled, 32-bit addressing allows full access to the entire 256 Mb address space without bank switching, essential for large firmware images exceeding 16 MB in XIP configurations.

How does hardware ECC operate during read operations?

Hardware ECC runs transparently during every read access: the internal controller calculates and checks Hamming codes on-the-fly, automatically correcting single-bit errors in the 256-byte page buffer before data is serialized out. No host intervention or additional read commands are required, and corrected data appears identical to uncorrupted reads.

Can S25FS256SDSMFI000 be used in place of S25FS128S devices?

No-it is not pin-compatible with S25FS128S due to different package footprints: S25FS128S uses SOIC-8 or WSON-8, while S25FS256SDSMFI000 uses BGA-24 (FAB024). Electrical and command compatibility exists, but PCB redesign and layout validation are required for substitution.

S25FS256SDSMFI000 Specifications

Product attributes: Attribute value

Manufacturer:: Spansion

Series:: FS-S

Package/Case:: 16-SOIC (0.295", 7.50mm Width)

Packaging:: Bulk

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FLASH

Technology:: FLASH - NOR

Memory Size:: 256Mbit

Memory Organization:: 32M x 8

Memory Interface:: SPI - Quad I/O, QPI

Clock Frequency:: 80 MHz

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: 1.7V ~ 2V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

S25FS256SDSMFI000 FAQ

1.How can I place an order for S25FS256SDSMFI000 through Aetrix?

Please submit a Request for Quotation (RFQ) for S25FS256SDSMFI000 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for S25FS256SDSMFI000 reliable?

The price and inventory of S25FS256SDSMFI000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S25FS256SDSMFI000 is usually 5 days.

3.What payment methods are accepted for S25FS256SDSMFI000?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S25FS256SDSMFI000 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S25FS256SDSMFI000?

S25FS256SDSMFI000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S25FS256SDSMFI000 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for S25FS256SDSMFI000?

For technical support, including S25FS256SDSMFI000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S25FS256SDSMFI000 requirements.

6.How does Aetrix verify that S25FS256SDSMFI000 is sourced from the original manufacturer or authorized distributors?

All S25FS256SDSMFI000 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S25FS256SDSMFI000 meets industry standards.

7.What is the process for return or replacement of S25FS256SDSMFI000?

All S25FS256SDSMFI000 units undergo pre-shipment inspection (PSI). If there is an issue with S25FS256SDSMFI000, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The S25FS256SDSMFI000 part is unused and in its original packaging.

Return procedure for S25FS256SDSMFI000:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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