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Infineon Technologies S25FS256SDSBHB203

Name: S25FS256SDSBHB203
Brand: Infineon Technologies
SKU: S25FS256SDSBHB203
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S25FS256SDSBHB203

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 24-TBGA

Datasheet:: S25FS256SDSBHB203.pdf

Description:: IC FLASH 256MBIT SPI/QUAD 24BGA

Quantity:: RFQ Add To RFQ list

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Inventory:2,086

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Product details

Overview

S25FS256SDSBHB203 from Infineon is a 256 Mb (32 MB) serial NOR flash memory 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 (FAC024 footprint). It supports Quad I/O, DDR Quad I/O read up to 80 MBps, 256-byte/512-byte page programming, and hardware ECC for single-bit error correction. Used in boot code storage for embedded microcontrollers requiring fast XIP-capable nonvolatile memory.

For engineers reviewing the S25FS256SDSBHB203 datasheet, S25FS256SDSBHB203 pinout, S25FS256SDSBHB203 application, or S25FS256SDSBHB203 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 high-speed controller interfaces.

Technical Context

This device implements Infineon's Eclipse architecture with 65-nm MIRRORBIT™ technology, enabling simultaneous read-while-write operation via program/erase suspend-resume functionality. It supports both 24-bit and 32-bit addressing modes and offers dual command sets: legacy SPI (modes 0/3) and enhanced Multi-I/O (MIO) with Quad/DDR protocols.

The FAC024 BGA package uses a 4×6 ball array with dedicated IO0–IO3 pins supporting bidirectional data transfer, WP# for hardware write protection, RESET# on IO3, and VCC/VSS power rails. Configuration registers control sector protection granularity, read latency, and DDR enablement - all accessible via standard SPI commands.

Key Specifications

Parameter	Value and Actual Design Meaning
Density	256 Mbit (32 MB) - sufficient for full firmware images and secure boot partitions in resource-constrained SoCs.
Supply Voltage	1.7 V to 2.0 V - compatible with low-power 1.8 V I/O domains without level-shifting.
Read Speed	80 MBps DDR Quad I/O - enables near-parallel memory access for XIP execution at >100 MHz CPU clocks.
Erase Endurance	100,000 cycles minimum - supports field firmware updates over 10+ years in industrial gateways.
Data Retention	20 years minimum at +85°C - ensures long-term reliability in unattended edge deployments.
OTP Size	1024 bytes - stores cryptographic keys, device IDs, or calibration data that must remain immutable after programming.
Temperature Grade	Industrial (–40°C to +85°C) - qualified for use in factory automation controllers and outdoor IoT nodes.

Pinout & Package

Package: BGA-24, 6 × 8 mm, FAC024 footprint (4×6 ball array), Pb-free, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
IO0	Serial Input / Data I/O 0	Primary bidirectional data line for standard SPI and MIO modes; used in all read/write command phases.
IO1	Serial Output / Data I/O 1	Bidirectional line supporting Dual/Quad I/O reads and writes; enables parallel data transfer during burst operations.
IO2	Write Protect / Data I/O 2	Hardware-enabled sector lock when asserted low; also functions as third I/O line in Quad mode.
IO3	Reset / Data I/O 3	Active-low reset input; doubles as fourth I/O line in Quad/DDR modes for full 4-bit bus width.
CS#	Chip Select	Active-low enable signal; initiates command decoding and drives internal state machine on falling edge.
SCK	Serial Clock	Input clock synchronizing all command, address, and data transfers; supports up to 133 MHz SDR or 80 MHz DDR.
VCC	Power Supply	1.7–2.0 V core supply; decoupling required within 5 mm of ball for stable DDR timing compliance.
VSS	Ground	Signal and power return path; multiple VSS balls ensure low-impedance reference for high-speed I/O switching.

Key Features

Feature	Design Value
Hardware ECC	On-the-fly single-bit error correction with no software overhead - maintains data integrity across 20-year retention life.
Erase Suspend/Resume	Allows background erase interruption to service urgent read requests - critical for real-time boot loaders.
Hybrid Sector Architecture	Combines eight 4-KB + one 224-KB sectors at top/bottom with uniform 256-KB blocks - balances fine-grained update flexibility with large-image efficiency.
SFDP & CFI Support	Self-describing configuration via JEDEC JESD216 - eliminates hard-coded timing parameters in host bootloader firmware.
Advanced Sector Protection	Password- or boot-code-controlled per-sector lock - enforces secure firmware partitioning in certified safety systems.

Applications

Industrial PLC Firmware Storage

Automotive ADAS Boot Memory

Use Scenario: Storing firmware and configuration data in programmable logic controllers deployed in harsh factory environments.

IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped into MCU address space for XIP execution during cold start.

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

Use Scenario: Holding boot code and sensor calibration tables in radar ECUs requiring AEC-Q100 Grade 2 qualification.

IC Role / Device Role / Timing Role: Primary SPI flash for ASIL-B compliant boot ROM with hardware write protection against runtime corruption.

Use Value: OTP array secures cryptographic keys; hybrid sector layout allows independent update of radar algorithm binaries without disturbing safety monitor code.

Edge AI Gateway Code Storage

Medical Imaging Device Parameter Memory

Use Scenario: Hosting inference engine binaries and model weights in compact edge gateways with thermal constraints.

IC Role / Device Role / Timing Role: High-bandwidth Quad DDR flash interfaced to ARM Cortex-A series SoC for low-latency model loading.

Use Value: 80 MBps DDR read speed reduces firmware load time by >40% versus legacy SPI flash, accelerating system boot and OTA recovery.

Use Scenario: Storing calibrated imaging parameters and regulatory audit logs in portable ultrasound devices.

IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter store with password-protected Advanced Sector Protection.

Use Value: 1024-byte OTP holds device-specific calibration signatures; block protection prevents accidental overwrite during clinical software updates.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Cypress S25FS256SAGBHI200	Same die, identical electrical specs and pinout; differs only in marking and traceability documentation.	No functional difference; accepted interchangeably in automotive and industrial designs post-Cypress acquisition.	Select when requiring Cypress-branded documentation or legacy design continuity.
Winbond W25Q256JWSIQ	256 Mb, 1.8 V, but lacks DDR mode, SFDP v1.6, and hardware ECC; uses different sector map (uniform 64 KB only).	Suitable for cost-sensitive consumer applications where DDR performance and ECC are not required.	Choose only if host controller does not require DDR timing or ECC-aware drivers.

Compared with S25FS256SDSBHB203, the Cypress alternative offers full drop-in compatibility, while the Winbond part trades DDR bandwidth and ECC for lower unit cost - making it viable only where firmware update frequency and data integrity requirements are relaxed.

Availability

S25FS256SDSBHB203 is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS modules, and edge AI gateways requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.

Supply support for S25FS256SDSBHB203 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 configurable nonvolatile storage - optimized for boot code execution, firmware updates, and secure parameter retention.

FAQ

What is the maximum supported clock frequency for DDR Quad I/O read operations?

The S25FS256SDSBHB203 supports DDR Quad I/O read at up to 80 MHz clock frequency, delivering 80 MBps effective throughput. This requires strict PCB layout adherence to length-matched IO0–IO3 traces and controlled impedance routing to maintain setup/hold timing margins under all operating conditions.

Does this device support 32-bit addressing for memory spaces larger than 16 MB?

Yes, the device supports both 24-bit and 32-bit addressing modes. When configured for 32-bit addressing, it enables full access to the entire 32 MB array without bank switching, simplifying host driver development and enabling direct mapping of large firmware images into linear memory space.

How is the 1024-byte OTP array protected from accidental overwrite?

The OTP array is permanently locked after first programming using dedicated One-Time Program commands. Once programmed, further write attempts to OTP addresses return status register error flags and have no effect - ensuring cryptographic keys or calibration data remain immutable even under voltage glitch or firmware fault conditions.

Can the hybrid sector architecture be reconfigured to use only uniform 256-KB sectors?

Yes, the device supports uniform sector erase options via configuration register settings. When enabled, all sectors become 256 KB, eliminating small-sector fragmentation and improving compatibility with higher-density successors - though this disables the ability to perform fine-grained 4-KB updates required for certain safety-critical patches.

S25FS256SDSBHB203 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: FS-S

Package/Case:: 24-TBGA

Packaging:: Tape & Reel (TR)

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 ~ 105°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 24-BGA (8x6)

S25FS256SDSBHB203 FAQ

1.How can I place an order for S25FS256SDSBHB203 through Aetrix?

Please submit a Request for Quotation (RFQ) for S25FS256SDSBHB203 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 S25FS256SDSBHB203 reliable?

The price and inventory of S25FS256SDSBHB203 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S25FS256SDSBHB203 is usually 5 days.

3.What payment methods are accepted for S25FS256SDSBHB203?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S25FS256SDSBHB203 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S25FS256SDSBHB203?

S25FS256SDSBHB203 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S25FS256SDSBHB203 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 S25FS256SDSBHB203?

For technical support, including S25FS256SDSBHB203 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S25FS256SDSBHB203 requirements.

6.How does Aetrix verify that S25FS256SDSBHB203 is sourced from the original manufacturer or authorized distributors?

All S25FS256SDSBHB203 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 S25FS256SDSBHB203 meets industry standards.

7.What is the process for return or replacement of S25FS256SDSBHB203?

All S25FS256SDSBHB203 units undergo pre-shipment inspection (PSI). If there is an issue with S25FS256SDSBHB203, 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 S25FS256SDSBHB203 part is unused and in its original packaging.

Return procedure for S25FS256SDSBHB203:

1.Submit a request within 90 days.

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

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