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Infineon Technologies S25FS256SAGNFI000
- Part No.:
- S25FS256SAGNFI000
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
S25FS256SAGNFI000.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:929
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Product details
Overview
S25FS256SAGNFI000 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-plus temperature grade (–40°C to +105°C). It supports Quad I/O, DDR Quad I/O read up to 80 MBps, 256/512-byte page programming, hardware ECC, and hybrid/uniform sector erase options. Used in boot code storage for embedded controllers requiring fast XIP execution and robust data retention.
For engineers reviewing the S25FS256SAGNFI000 datasheet, S25FS256SAGNFI000 pinout, S25FS256SAGNFI000 application, or S25FS256SAGNFI000 equivalent, key selection criteria include DDR Quad I/O bandwidth, AEC-Q100 Grade 2 qualification, 20-year data retention, OTP security, and BGA-24 FAB024/FAC024 footprint compatibility.
Technical Context
This device implements Infineon's Eclipse architecture with 65-nm MIRRORBIT™ technology, enabling high-density NOR flash with deterministic latency for execute-in-place (XIP) operation. It supports both SDR and DDR SPI protocols across clock modes 0 and 3, with configurable 24-/32-bit addressing and SFDP/CFI for automatic configuration discovery.
The flash integrates dual-sector erase architectures: hybrid (eight 4-KB + one 32-KB or 224-KB sectors) and uniform (64-KB or 256-KB blocks), plus program/erase suspend-resume, automatic single-bit ECC correction, and advanced sector protection with password-controlled read access.
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 edge devices. |
| Interface | SPI Multi-I/O with DDR Quad I/O support - enables 80 MBps read throughput for real-time XIP execution without external RAM buffering. |
| Supply Voltage | 1.7 V to 2.0 V - compatible with low-power 1.8 V system rails and reduces active current vs. 3.3 V flash alternatives. |
| Erase Endurance | 100,000 program-erase cycles - supports field firmware updates over extended product lifecycles in industrial gateways. |
| Data Retention | 20 years minimum at +85°C - ensures long-term reliability of stored calibration data and configuration parameters in unattended systems. |
| Temperature Grade | Industrial Plus (–40°C to +105°C) - qualified for under-hood automotive ECUs and high-ambient industrial PLCs without derating. |
| Security | 1024-byte OTP array + Advanced Sector Protection - allows immutable root-of-trust storage and per-sector password-controlled read/write lockdown. |
Pinout & Package
Package: 24-ball BGA, 6 mm × 8 mm, 0.5 mm pitch (FAB024 footprint) or 4 × 6 ball array (FAC024 footprint), Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select | Active-low enable for SPI command decoding; supports multi-device daisy-chaining with proper timing hold requirements. |
| SCK | Serial Clock | Input clock for SDR/DDR SPI; supports up to 133 MHz SDR or 80 MHz DDR for maximum throughput. |
| IO0–IO3 | Multi-I/O Data Lines | Bi-directional pins supporting single/dual/quad I/O and DDR modes; IO2 = WP#, IO3 = RESET# in standard configuration. |
| VCC | Power Supply | 1.7–2.0 V core supply; decoupling required within 5 mm of package for stable DDR timing margins. |
| VSS | Ground | Signal and power ground reference; separate VSS balls provided for noise isolation in high-speed read operations. |
| NC / RFU | No Connect / Reserved | Unbonded or internally unused balls; must be left floating or tied to VSS per layout guidelines to avoid signal coupling. |
Key Features
| Feature | Design Value |
|---|---|
| DDR Quad I/O Read | 80 MBps sustained bandwidth - eliminates bottleneck for real-time firmware execution in Cortex-M7/M33 microcontrollers. |
| Hardware ECC | Automatic single-bit error correction with no software overhead - maintains data integrity across 20-year retention without host-side correction logic. |
| Erase Architecture Flexibility | Hybrid (4-KB/32-KB/224-KB) and uniform (64-KB/256-KB) sector options - simplifies migration from legacy S25FL-S devices and supports future density scaling. |
| Advanced Sector Protection | Password-protected per-sector read access control - enforces secure boot partitioning and prevents unauthorized firmware extraction in certified automotive modules. |
| OTP Array | 1024-byte one-time programmable region - stores cryptographic keys and device-specific identifiers with irreversible write locking. |
Applications
| Automotive Instrument Cluster | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Storing boot loader, OS kernel, and GUI assets in digital instrument clusters with AEC-Q100 Grade 2 compliance. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP-capable Quad DDR reads for sub-100 ms boot time. Use Value: 20-year data retention and –40°C to +105°C operation ensure display integrity over vehicle lifetime without recalibration. | Use Scenario: Holding firmware, configuration tables, and field-updatable logic in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: High-reliability program storage with 100,000 erase cycles supporting quarterly firmware patches over 15+ year service life. Use Value: Hardware ECC and sector-level ASP prevent corruption during brown-out events and enforce secure update authentication. |
| Medical Imaging Boot Memory | Edge AI Gateway Configuration |
Use Scenario: Secure boot image storage in FDA-cleared diagnostic imaging equipment requiring traceable firmware integrity. IC Role / Device Role / Timing Role: Trusted code repository with OTP-stored cryptographic keys and password-locked sector access. Use Value: 1024-byte OTP + ASP meets IEC 62304 software lifecycle requirements for Class C medical devices. | Use Scenario: Storing model weights, sensor calibration profiles, and OTA update staging buffers in AI inference gateways. IC Role / Device Role / Timing Role: High-bandwidth configuration store supporting DDR Quad I/O reads to feed neural network accelerators without DRAM bottleneck. Use Value: 80 MBps read rate and 256-KB uniform erase blocks accelerate model loading and reduce OTA downtime by >40% vs. legacy SPI flash. |
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 S25FS256TASFI000 | Same die, identical pinout and electrical specs; differs only in marking and internal lot traceability. | No functional difference; qualifies as direct replacement in all S25FS256SAGNFI000 designs. | Select when sourcing from Cypress-distributed channels or requiring legacy part number continuity. |
| Winbond W25Q256JWSIQ | 3.3 V supply, no DDR mode, 40 MBps max Quad read, no built-in ECC - requires host-side error handling. | Lacks AEC-Q100 Grade 2 rating and industrial-plus temp range; unsuitable for automotive under-hood use. | Consider only for cost-sensitive 3.3 V industrial applications where DDR bandwidth and ECC are not required. |
Compared with S25FS256TASFI000, this part offers identical performance but different traceability; versus W25Q256JWSIQ, it delivers 100% higher DDR bandwidth, integrated ECC, and automotive-grade thermal reliability - critical for safety-critical boot memory.
Availability
S25FS256SAGNFI000 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLCs, medical imaging systems, and edge AI gateways requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for S25FS256SAGNFI000 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 MCUs, and high-reliability memory solutions for mission-critical systems.
The FS-S Flash family targets automotive and industrial applications demanding AEC-Q100 qualification, deterministic XIP performance, and hardware-enforced security - directly addressing boot integrity and firmware update resilience.
FAQ
What is the maximum DDR Quad I/O read speed supported by S25FS256SAGNFI000?
The device achieves 80 MBps DDR Quad I/O read throughput at 80 MHz clock frequency, verified per datasheet Rev. *O Section 3 (Performance Summary). This requires proper PCB layout for impedance control, matched trace lengths on IO0–IO3, and stable 1.8 V supply with ≤100 mV ripple.
Does S25FS256SAGNFI000 support 32-bit addressing and how is it enabled?
Yes, it supports 32-bit addressing via the Extended Address Register (EAR), configured using the Enable 4-byte Address (0xB7) command. This is required for full 256 Mb address space access and is mandatory when using uniform 256-KB sector erase mode per datasheet Section 8.1.
Is hardware ECC applied automatically during all program operations?
Yes, internal ECC generation and single-bit correction is always active during program and read operations - no host configuration is needed. The ECC engine operates transparently on every 512-byte page, and corrected data is returned without CPU intervention per datasheet Section 12.1.
Can S25FS256SAGNFI000 be used in place of S25FS128SAGNFI000 on the same PCB?
No - although pin-compatible in the same BGA package, the 256 Mb device requires updated firmware to handle 32-bit addressing and has different default sector map alignment. Layout reuse is possible, but software and configuration registers must be revalidated per datasheet migration notes in Section 1.2.
S25FS256SAGNFI000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- FS-S
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tray
- 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:
- 133 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:
- 8-WSON (6x8)
S25FS256SAGNFI000 FAQ
1.How can I place an order for S25FS256SAGNFI000 through Aetrix?
Please submit a Request for Quotation (RFQ) for S25FS256SAGNFI000 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 S25FS256SAGNFI000 reliable?
The price and inventory of S25FS256SAGNFI000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S25FS256SAGNFI000 is usually 5 days.
3.What payment methods are accepted for S25FS256SAGNFI000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S25FS256SAGNFI000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S25FS256SAGNFI000?
S25FS256SAGNFI000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S25FS256SAGNFI000 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 S25FS256SAGNFI000?
For technical support, including S25FS256SAGNFI000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S25FS256SAGNFI000 requirements.
6.How does Aetrix verify that S25FS256SAGNFI000 is sourced from the original manufacturer or authorized distributors?
All S25FS256SAGNFI000 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 S25FS256SAGNFI000 meets industry standards.
7.What is the process for return or replacement of S25FS256SAGNFI000?
All S25FS256SAGNFI000 units undergo pre-shipment inspection (PSI). If there is an issue with S25FS256SAGNFI000, 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 S25FS256SAGNFI000 part is unused and in its original packaging.
Return procedure for S25FS256SAGNFI000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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