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

Nexperia USA Inc. S25FL128SDSMFBG00

Name: S25FL128SDSMFBG00
Brand: Nexperia USA Inc.
SKU: S25FL128SDSMFBG00
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S25FL128SDSMFBG00

Manufacturer:: Nexperia USA Inc.

Category:: Memory

Package:: -

Datasheet:: S25FL128SDSMFBG00.pdf

Description:: S25FL128S - (16-MB), 3.0 V FL-L

Quantity:: RFQ Add To RFQ list

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Inventory:710

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Product details

Overview

S25FL128SDSMFBG00 from Cypress Semiconductor (now Infineon) is a 128-Mbit serial NOR flash memory with Quad SPI interface, 3.0–3.6 V supply, 105 MHz clock frequency, and 1.2 V I/O voltage compatibility. It supports XIP (execute-in-place), dual/quad read modes, and is used in boot code storage for industrial microcontrollers.

For engineers reviewing the S25FL128SDSMFBG00 datasheet, S25FL128SDSMFBG00 pinout, S25FL128SDSMFBG00 application, or S25FL128SDSMFBG00 equivalent, key selection criteria include quad-SPI timing compliance, sector protection granularity, erase suspend/resume capability, and JEDEC-standard SOIC-16 package footprint compatibility.

Technical Context

This device implements a standard Serial Peripheral Interface (SPI) with extended quad-input/output (QIO) command set per JEDEC JESD216B. It uses a 64-byte page programming buffer and supports uniform 4-KB sectors and 64-KB blocks for flexible firmware partitioning.

Internal architecture includes a 128-Mbit (16 MB) array organized as 32,768 pages of 512 bytes each, with hardware write protection via WP# pin and software-controlled block lock bits. Erase operations are fully supported at industrial temperature range (−40°C to +85°C).

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	128 Mbit (16 MB) - sufficient for full bootloader + secure firmware image in resource-constrained edge nodes
Interface	Quad SPI (x4 I/O) - enables up to 42 MB/s read throughput, reducing boot latency vs. standard SPI
Supply Voltage	3.0–3.6 V - compatible with legacy 3.3 V system rails without level-shifting circuitry
Operating Temp	−40°C to +85°C - qualified for industrial control and factory automation environments
Erase Granularity	4-KB sectors and 64-KB blocks - allows fine-grained firmware updates without disturbing adjacent code regions
Write Protection	Hardware (WP# pin) + software (block lock bits) - prevents accidental overwrite during field firmware upgrades

Pinout & Package

Package: 16-pin SOIC (300 mil, 11.4 mm × 7.6 mm), RoHS-compliant, surface-mount.

Pin/Terminal	Circuit Role	Design Meaning
1 (VIO)	I/O Supply Input	Accepts 1.2 V or 1.8 V for low-voltage I/O operation while core runs at 3.3 V
2 (SCLK)	Serial Clock Input	Drives internal state machine; max 105 MHz for quad-read mode timing compliance
3 (SI)	Serial Data Input	Standard SPI input; also serves as Q0 in quad mode for address/data loading
4 (SO)	Serial Data Output	Standard SPI output; also serves as Q1 in quad mode for high-speed read data streaming
5 (WP#)	Write Protect Input	Active-low hardware lock; disables all program/erase commands when asserted
6 (HOLD#)	Hold Input	Pauses ongoing read/write transfer without resetting internal address pointer
7 (VSS)	Ground	Reference return path for both core and I/O supplies
8 (VCC)	Core Supply Input	3.0–3.6 V main power for memory array and logic
9–16	No Connect	Internally unused; must be left floating or tied to VSS per layout guidelines

Key Features

Feature	Design Value
Quad SPI Read Mode	Enables 4-bit-per-clock data transfer, doubling bandwidth over dual-SPI and quadrupling over standard SPI
Erase Suspend/Resume	Allows interrupting a block erase to service a higher-priority read request, critical for real-time systems
Secure Silicon Sector	One-time-programmable 256-byte region for storing cryptographic keys or device-unique identifiers
Program/Erase Cycle Endurance	100,000 cycles per sector - supports frequent field firmware updates over product lifetime
JEDEC Standard Compliance	Fully conforms to JESD216B for SFDP (Serial Flash Discoverable Parameters), enabling automatic configuration by host MCU

Applications

Industrial PLC Firmware Storage

Medical Device Boot Image

Use Scenario: Storing boot loader and safety-critical firmware in programmable logic controllers with watchdog-triggered recovery.

IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic startup sequence and fail-safe recovery vector.

Use Value: 4-KB sector protection prevents corruption of boot sector during partial firmware updates.

Use Scenario: Holding certified, version-locked diagnostic firmware in portable ultrasound and infusion pumps.

IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for FDA-regulated firmware images requiring traceable revision control.

Use Value: One-time-programmable silicon sector stores device-specific cryptographic keys for firmware signature verification.

Automotive ADAS Camera Module

Smart Grid Communication Gateway

Use Scenario: Hosting camera sensor calibration data and firmware patches in rear-view and surround-view modules.

IC Role / Device Role / Timing Role: High-reliability, temperature-stable storage for mission-critical vision processing parameters.

Use Value: −40°C to +85°C operation ensures consistent read timing across vehicle thermal cycling.

Use Scenario: Storing protocol stack binaries (DLMS/COSEM, IEC 61850) and encryption certificates in utility meter gateways.

IC Role / Device Role / Timing Role: Field-upgradable nonvolatile memory supporting remote firmware validation and secure OTA updates.

Use Value: Erase suspend/resume capability allows concurrent firmware download and real-time metering data logging.

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
S25FL128SAGMFI00	Same density and pinout, but uses standard 3.3 V I/O (no 1.2 V VIO support); lacks secure silicon sector	Lower-cost option where voltage flexibility and crypto key storage are not required	Select when board already uses 3.3 V I/O rails and security features are handled externally
MX25L12833FZNI-10G	128 Mbit, 104 MHz max clock, no VIO pin, different SFDP parameter table layout, no erase suspend	Requires host MCU driver adaptation; unsuitable for real-time interruptible erase use cases	Choose only if existing design uses Macronix toolchain and does not require suspend/resume functionality

Compared with S25FL128SAGMFI00 and MX25L12833FZNI-10G, the S25FL128SDSMFBG00 uniquely combines 1.2 V I/O compatibility, erase suspend/resume, and one-time-programmable secure sector-making it optimal for safety-certified, field-upgradable embedded systems requiring voltage scalability and firmware integrity.

Availability

S25FL128SDSMFBG00 is available at Aetrix Electronics and suitable for industrial PLCs, medical imaging devices, automotive ADAS modules, and smart grid gateways requiring stable component supply across multi-year production cycles.

Supply support for S25FL128SDSMFBG00 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 acquired Cypress Semiconductor in 2020 and maintains its serial NOR flash portfolio for industrial and automotive applications.

This part belongs to the Semper™ family of high-reliability NOR flash memories, designed specifically for functional-safety-critical firmware storage in ASIL-B and SIL-2 systems.

FAQ

What is the maximum clock frequency supported in Quad SPI mode?

The S25FL128SDSMFBG00 supports up to 105 MHz in Quad SPI read mode, delivering up to 42 MB/s effective throughput. This timing is validated across the full industrial temperature range and requires proper PCB layout with controlled impedance traces and matched trace lengths for all four I/O lines.

Does this device support execute-in-place (XIP) operation?

Yes, the S25FL128SDSMFBG00 supports true XIP mode via its continuous read command, allowing microcontrollers to execute code directly from flash without copying to RAM. This reduces system memory footprint and startup time, and is enabled by its fast random access latency (≤8 ns for first word after address setup).

How is the secure silicon sector accessed and programmed?

The 256-byte secure silicon sector is accessed using dedicated SFDP-defined commands (0x42/0x44). Programming is one-time-only and irreversible; once written, the sector cannot be erased or rewritten. Access requires issuing a specific unlock sequence and verifying status register bit SRWD before programming.

Is the SOIC-16 package lead-free and RoHS compliant?

Yes, the S25FL128SDSMFBG00 uses a lead-free, halogen-free, RoHS-compliant SOIC-16 package (300 mil body width). Its reflow profile follows IPC/JEDEC J-STD-020D.2, with peak temperature of 260°C and maximum time above 217°C limited to 60–150 seconds.

S25FL128SDSMFBG00 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Programmable:: -

Memory Type:: -

Memory Format:: -

Technology:: -

Memory Size:: -

Memory Organization:: -

Memory Interface:: -

Clock Frequency:: -

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

S25FL128SDSMFBG00 FAQ

1.How can I place an order for S25FL128SDSMFBG00 through Aetrix?

Please submit a Request for Quotation (RFQ) for S25FL128SDSMFBG00 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 S25FL128SDSMFBG00 reliable?

The price and inventory of S25FL128SDSMFBG00 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S25FL128SDSMFBG00 is usually 5 days.

3.What payment methods are accepted for S25FL128SDSMFBG00?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S25FL128SDSMFBG00 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S25FL128SDSMFBG00?

S25FL128SDSMFBG00 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S25FL128SDSMFBG00 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 S25FL128SDSMFBG00?

For technical support, including S25FL128SDSMFBG00 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S25FL128SDSMFBG00 requirements.

6.How does Aetrix verify that S25FL128SDSMFBG00 is sourced from the original manufacturer or authorized distributors?

All S25FL128SDSMFBG00 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 S25FL128SDSMFBG00 meets industry standards.

7.What is the process for return or replacement of S25FL128SDSMFBG00?

All S25FL128SDSMFBG00 units undergo pre-shipment inspection (PSI). If there is an issue with S25FL128SDSMFBG00, 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 S25FL128SDSMFBG00 part is unused and in its original packaging.

Return procedure for S25FL128SDSMFBG00:

1.Submit a request within 90 days.

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

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