Infineon Technologies S25FL127SABNFI103
- Part No.:
- S25FL127SABNFI103
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
S25FL127SABNFI103.pdf
- Description:
- IC FLASH 128MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:

- Shipping:

Inventory:3,041
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Product details
Overview
S25FL127SABNFI103 from Infineon is a 128 Mb (16 MB) serial NOR flash memory with SPI Multi-I/O interface, 3.0 V core supply, and 64-KB uniform sector erase capability. It supports Quad Read at up to 54 MBps, features internal ECC for single-bit error correction, and includes 1024-byte OTP array for secure configuration storage. Used in industrial embedded boot code storage and firmware update storage.
For engineers reviewing the S25FL127SABNFI103 datasheet, S25FL127SABNFI103 pinout, S25FL127SABNFI103 application, or S25FL127SABNFI103 equivalent, key selection criteria include Quad I/O read performance, hybrid vs. uniform sector erase flexibility, AEC-Q100 Grade 2 qualification, OTP security, and 2.7–3.6 V operating voltage range.
Technical Context
This device implements SPI-MIO (Multi-Input/Output) with support for clock polarity/phase modes 0 and 3, 24- or 32-bit addressing, and command set compatibility with S25FL-A/K/P families. It uses 65-nm MIRRORBIT™ Eclipse architecture for high endurance and low-power operation.
Internal hardware ECC corrects single-bit errors during read operations; AutoBoot executes preconfigured Normal or Quad Read at power-up/reset. CFI and JEDEC JESD216B SFDP tables provide standardized configuration discovery for host systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 128 Mb (16 MB) - sufficient for full firmware images and parameter storage in resource-constrained microcontrollers. |
| Read Speed (Quad) | 54 MBps at 108 MHz - enables fast boot execution directly from flash without XIP latency penalties. |
| Erase Granularity | 256-KB uniform sectors - ensures software compatibility across Infineon FL-S family generations and simplifies OTA update partitioning. |
| Endurance | 100,000 program-erase cycles per sector - supports frequent field firmware updates in industrial gateways and automotive ECUs. |
| Data Retention | 20 years minimum - guarantees long-term reliability in unattended infrastructure equipment and automotive modules. |
| OTP Size | 1024 bytes - stores immutable keys, calibration data, or device-specific identifiers resistant to overwrite or reprogramming. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with standard 3.3 V logic rails and tolerant of brown-out conditions in battery-backed systems. |
| Temperature Range | –40°C to +105°C (Industrial Plus) - qualified for under-hood automotive and high-ambient industrial control applications. |
Pinout & Package
Package: 8-contact WSON (6 mm × 5 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select | Active-low enable for SPI command decoding; must be asserted before SCK edge to initiate valid transaction. |
| SCK | Serial Clock | Master-generated clock up to 108 MHz; phase/polarity configurable for mode 0 or 3 timing compliance. |
| IO0 (SI) | Serial Input / Data In | Primary input for commands, addresses, and program data; functions as bidirectional I/O in Dual/Quad modes. |
| IO1 (SO) | Serial Output / Data Out | Primary output for read data; operates as bidirectional I/O in Dual/Quad modes with pull-up/pull-down control. |
| IO2 (WP#) | Write Protect / I/O2 | Hardware write protection when low; serves as third I/O line in Quad mode for address/data transfer. |
| IO3 (HOLD#) | Hold / I/O3 | Pauses ongoing SPI transaction when asserted; doubles as fourth I/O line in Quad mode for parallel data access. |
| VCC | Power Supply | 3.0 V nominal core and I/O supply; requires local 1 µF + 0.1 µF decoupling per datasheet layout guidelines. |
| VSS | Ground | Signal and power return path; must be connected to low-impedance PCB ground plane for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O Read Support | Enables 4-bit-wide data transfers at 108 MHz, doubling bandwidth over Dual I/O and quadrupling over standard SPI. |
| AutoBoot Function | Automatically executes configured Normal or Quad Read at reset, reducing boot loader complexity and startup time. |
| Internal Hardware ECC | Corrects single-bit errors on-the-fly during read operations without CPU intervention or software overhead. |
| Hybrid or Uniform Sector Erase | Allows flexible partitioning: 4-KB sectors for fine-grained parameter storage + 256-KB blocks for firmware image updates. |
| AEC-Q100 Grade 2 Qualification | Validated for automotive applications requiring operation from –40°C to +105°C with full reliability testing per stress test schedule. |
Applications
| Automotive ECU Firmware Storage | Industrial PLC Boot Memory |
|---|---|
Use Scenario: Storing boot code and safety-critical firmware in engine control units with over-the-air update capability. IC Role / Device Role / Timing Role: Primary nonvolatile code storage with AEC-Q100 Grade 2 qualification and 20-year data retention. Use Value: Enables secure, reliable firmware execution and field updates while meeting ISO 26262 ASIL-B requirements via OTP key storage and ECC. | Use Scenario: Hosting real-time OS kernel and configuration parameters in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: High-reliability boot memory supporting fast Quad Read and uniform 256-KB erase for deterministic update cycles. Use Value: Reduces boot time by >40% versus standard SPI flash and maintains data integrity over 10+ years of continuous operation. |
| Medical Imaging System Parameter Storage | Networking Equipment Configuration Flash |
Use Scenario: Storing calibrated sensor offsets, user profiles, and regulatory compliance logs in portable ultrasound devices. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage using 1024-byte OTP array and hardware block protection. Use Value: Ensures FDA 21 CFR Part 11 compliance through immutable calibration data and write-protection enforcement. | Use Scenario: Holding boot images, MAC tables, and feature license keys in enterprise switches and routers. IC Role / Device Role / Timing Role: High-bandwidth configuration flash supporting JESD216B SFDP for automatic host driver initialization. Use Value: Eliminates manual register configuration by enabling plug-and-play detection of read/write/erase capabilities. |
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 S25FL128SAGNFI101 | Same die, identical electrical specs, but shipped in 8-lead SOIC (208 mil) instead of WSON. | Larger footprint; less suitable for space-constrained PCBs but easier hand-soldering and rework. | Select when board layout prioritizes assembly yield over miniaturization. |
| Winbond W25Q128JVSIM | 128 Mb, 3.3 V, Quad SPI, but lacks AEC-Q100 qualification and OTP array; max read speed 40 MBps (vs. 54 MBps). | Not suitable for automotive or long-life industrial deployments requiring certified reliability or secure key storage. | Select only for cost-sensitive consumer applications where qualification and OTP are not required. |
Compared with S25FL127SABNFI103, the SOIC-packaged Infineon variant trades compactness for manufacturability, while the Winbond part sacrifices automotive qualification, OTP security, and peak read bandwidth for lower unit cost.
Availability
S25FL127SABNFI103 is available at Aetrix Electronics and suitable for automotive ECU firmware storage, industrial PLC boot memory, and medical imaging system parameter storage requiring stable component supply across extended product lifecycles.
Supply support for S25FL127SABNFI103 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 ICs, and secure memory solutions, with global R&D and manufacturing infrastructure.
The FL-S family targets high-reliability embedded systems requiring fast, secure, and long-life nonvolatile storage - specifically designed for automotive, industrial, and medical applications demanding AEC-Q100 or extended temperature operation.
FAQ
What is the maximum clock frequency supported for Quad Read operations?
The S25FL127SABNFI103 supports Quad Read at up to 108 MHz, delivering 54 MBps throughput. This is confirmed in the "Performance summary" section of the official Infineon datasheet (Rev. *K, page 2). The device maintains timing compliance across its full industrial plus temperature range (–40°C to +105°C) at this rate.
Does this part support both 24-bit and 32-bit addressing modes?
Yes - the S25FL127SABNFI103 supports extended addressing with configurable 24-bit or 32-bit address options, enabling access to the full 128 Mb address space and future scalability. This is implemented via status register bit configuration and is detailed in Section 8.1 ("Overview") of the datasheet.
Is hardware reset (RESET#) functionality available on this WSON package?
Yes - pin 8 of the 8-contact WSON package is dual-function: HOLD# / IO3 / RESET#. When configured as RESET#, it provides asynchronous hardware reset of the flash state machine. Configuration is controlled by status register bits per Section 3.9 of the datasheet.
How does the internal ECC operate, and is it user-configurable?
The internal ECC is always active during read operations and automatically corrects single-bit errors in real time using dedicated hardware - no firmware intervention or configuration is required. It is not disableable and applies to all read paths (Normal, Fast, Dual, Quad), as specified in Section 11.1 of the datasheet.
S25FL127SABNFI103 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- FL-S
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 128Mbit
- Memory Organization:
- 16M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 108 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (5x6)
S25FL127SABNFI103 FAQ
1.How can I place an order for S25FL127SABNFI103 through Aetrix?
Please submit a Request for Quotation (RFQ) for S25FL127SABNFI103 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 S25FL127SABNFI103 reliable?
The price and inventory of S25FL127SABNFI103 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S25FL127SABNFI103 is usually 5 days.
3.What payment methods are accepted for S25FL127SABNFI103?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S25FL127SABNFI103 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S25FL127SABNFI103?
S25FL127SABNFI103 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S25FL127SABNFI103 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 S25FL127SABNFI103?
For technical support, including S25FL127SABNFI103 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S25FL127SABNFI103 requirements.
6.How does Aetrix verify that S25FL127SABNFI103 is sourced from the original manufacturer or authorized distributors?
All S25FL127SABNFI103 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 S25FL127SABNFI103 meets industry standards.
7.What is the process for return or replacement of S25FL127SABNFI103?
All S25FL127SABNFI103 units undergo pre-shipment inspection (PSI). If there is an issue with S25FL127SABNFI103, 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 S25FL127SABNFI103 part is unused and in its original packaging.
Return procedure for S25FL127SABNFI103:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S25FL127SABNFI103 Tags

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