Infineon Technologies S25FL204K0TMFI041
- Part No.:
- S25FL204K0TMFI041
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
S25FL204K0TMFI041.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:

- Shipping:

Inventory:2,824
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Product details
Overview
S25FL204K0TMFI041 from Cypress Semiconductor is a 4-Mbit (512 kB) 3.0 V SPI Flash memory organized as 2048 pages × 256 bytes, supporting standard and dual-output SPI interfaces up to 85 MHz, with uniform 4-kB sectors and 64-kB blocks, used for firmware storage, boot code, and configuration data in microcontroller-based embedded systems.
For engineers reviewing the S25FL204K0TMFI041 datasheet, S25FL204K0TMFI041 pinout, S25FL204K0TMFI041 application, or S25FL204K0TMFI041 equivalent, key selection criteria include 2.7–3.6 V single-supply operation, hardware write protection via WP# and HOLD#, JEDEC ID support, 100k program/erase cycles, and industrial temperature range (–40°C to +85°C).
Technical Context
The S25FL204K0TMFI041 implements a uniform sector architecture with 128 × 4-kB sectors and 8 × 64-kB blocks, enabling flexible erase granularity for parameter and code storage. It supports SPI Mode 0 and Mode 3 with rising-edge input sampling and falling-edge output timing.
Dual Output Read (0x3B) repurposes the SI/IO0 pin as a second data output during fast read operations, doubling throughput versus standard SPI. The device integrates status register bits (BP0–BP3, SRP) for software-controlled write protection and supports Deep Power-Down (0xB9) with 15 µA standby current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 kbyte), organized as 2048 × 256-byte pages |
| Supply Voltage | 2.7–3.6 V - enables direct interface with 3.3 V logic without level shifting |
| Max Clock Frequency | 85 MHz - supports high-speed boot code loading and firmware updates |
| Erase Granularity | 4 kB sector / 64 kB block - allows selective firmware patching without full chip erase |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention - suitable for field-upgradable systems |
| Power Consumption | 12 mA active current; 15 µA standby - meets low-power embedded and IoT requirements |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade deployment |
Pinout & Package
Package: 8-pin SOIC (150-mil body width, SOA 008 footprint), RoHS-compliant, Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select (active-low) | Enables serial communication; high impedance on SO when deasserted |
| SCK | Serial Clock Input | Timing reference for SPI transfers; rising edge latches input, falling edge outputs data |
| SI/IO0 | Serial Input / Dual Output | Input for commands/addresses/data; becomes output during Fast Read Dual Output (0x3B) |
| SO | Serial Output | Primary data output pin; driven during all read operations including dual-output mode |
| WP# | Write Protect (active-low) | Hardware lock for status register; works with BP/SRP bits to protect memory regions |
| HOLD# | Hold (active-low) | Pauses ongoing SPI transfer without deselecting device; preserves internal state |
| VCC | Power Supply | 2.7–3.6 V supply; powers core logic and I/O buffers |
| GND | Ground | Reference return path for all signals and power |
Key Features
| Feature | Design Value |
|---|---|
| Dual Output Read (0x3B) | Enables 2× data throughput vs. standard SPI by using SI/IO0 as second output during reads |
| Uniform 4-kB Sector Architecture | Allows fine-grained firmware updates and parameter storage without erasing unrelated code sections |
| Hardware + Software Write Protection | WP# pin and status register BP/SRP bits provide layered security against accidental writes |
| Deep Power-Down Mode (0xB9) | Reduces current to ≤1 µA - critical for battery-backed or energy-harvesting applications |
| JEDEC Manufacturer/Device ID Support | Enables runtime identification (0x90/0x9F commands) for BOM validation and multi-vendor compatibility checks |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Memory |
|---|---|
Use Scenario: Storing firmware images and calibration tables in programmable logic controllers requiring field updates over CAN or Ethernet. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to MCU's XIP or copied to RAM at startup; accessed via SPI at ≤85 MHz. Use Value: 4-kB sector erase enables delta updates of control algorithms without disrupting operational parameters stored elsewhere. | Use Scenario: Holding boot loader and safety-critical application code in engine control units operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Primary SPI flash for ASIL-B compliant boot sequence; verified via CRC and JEDEC ID during power-on self-test. Use Value: 100k endurance and 20-year retention ensure reliability over 15+ year vehicle lifecycles with multiple reprogramming events. |
| IoT Edge Sensor Configuration | Medical Device Parameter Storage |
Use Scenario: Persisting sensor calibration coefficients, network credentials, and user preferences in battery-powered wireless sensors. IC Role / Device Role / Timing Role: Low-power configuration store accessed intermittently via SPI; enters Deep Power-Down between transmissions. Use Value: 15 µA standby and ≤1 µA deep power-down extend coin-cell battery life beyond 5 years in sleep-dominated operation. | Use Scenario: Storing FDA-mandated device settings, usage logs, and firmware revision history in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory with hardware write protection enabled via WP# and status register lock. Use Value: Dual-layer protection (pin + register) prevents unauthorized modification of clinical configuration data during service or update. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S25FL204K0XMFI041 | Same die, 8-pin SOIC 208-mil package (SOC 008); identical electrical specs and timing | Requires PCB footprint change; preferred where larger pad pitch improves solder joint reliability | Select when board layout accommodates 208-mil SOIC and thermal/mechanical robustness is prioritized |
| MX25L4005AM1I-12G | 4-Mbit SPI Flash from Macronix; 85 MHz max clock, but only standard SPI (no dual output); 2.7–3.6 V | Lacks dual-output read mode; slightly lower endurance (100k cycles same, but retention rated at 10 years) | Choose when dual-output bandwidth is unnecessary and cost sensitivity outweighs feature parity |
Compared with S25FL204K0XMFI041, the 0TMFI041 offers identical functionality in a smaller 150-mil SOIC footprint; versus MX25L4005AM1I-12G, it delivers higher data throughput via dual-output read and longer data retention-critical for long-lifecycle industrial deployments.
Availability
S25FL204K0TMFI041 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and IoT edge sensor configuration requiring stable component supply and long-term lifecycle support.
Supply support for S25FL204K0TMFI041 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
Cypress Semiconductor, founded in 1982 and now part of Infineon Technologies, delivers high-performance, reliable embedded solutions including PSoC, microcontrollers, analog ICs, and serial memories.
The S25FL family was developed by Spansion (acquired by Cypress) specifically for cost-sensitive, space-constrained embedded systems needing robust, low-voltage SPI Flash with flexible erase architecture and industrial temperature support.
FAQ
What SPI modes does the S25FL204K0TMFI041 support?
The device supports SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). In both modes, data is latched on the rising edge of SCK and output on the falling edge. The difference lies only in idle SCK polarity, ensuring compatibility with most microcontroller SPI peripherals without requiring clock inversion logic.
Can the S25FL204K0TMFI041 be used in XIP (eXecute-In-Place) configurations?
No, the S25FL204K0TMFI041 is not designed for true XIP operation. It lacks an address bus and synchronous read interface required for direct CPU instruction fetch. It supports fast read and dual-output read for efficient code shadowing into RAM, but execution must occur from internal or external SRAM/DRAM after copy.
How does hardware write protection interact with software protection bits?
WP# pin controls write access to the status register only. When WP# is low, the BP0–BP3 and SRP bits cannot be modified-even if WREN is issued. Software protection (via BP bits) then governs which memory regions are locked for program/erase. This two-tier scheme prevents accidental or malicious status register corruption while allowing runtime region locking.
Is the S25FL204K0TMFI041 compatible with Quad SPI controllers?
No, the S25FL204K0TMFI041 supports only standard and dual-output SPI (2-wire I/O). It does not implement Quad SPI (4-wire I/O) commands or pin multiplexing for IO2/IO3. Devices requiring quad mode must use later-generation S25FL-P or Semper Flash families with dedicated QSPI support.
S25FL204K0TMFI041 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- FL2-K
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 5ms
- 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-SOIC
S25FL204K0TMFI041 FAQ
1.How can I place an order for S25FL204K0TMFI041 through Aetrix?
Please submit a Request for Quotation (RFQ) for S25FL204K0TMFI041 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 S25FL204K0TMFI041 reliable?
The price and inventory of S25FL204K0TMFI041 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S25FL204K0TMFI041 is usually 5 days.
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S25FL204K0TMFI041 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S25FL204K0TMFI041 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 S25FL204K0TMFI041?
For technical support, including S25FL204K0TMFI041 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S25FL204K0TMFI041 requirements.
6.How does Aetrix verify that S25FL204K0TMFI041 is sourced from the original manufacturer or authorized distributors?
All S25FL204K0TMFI041 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 S25FL204K0TMFI041 meets industry standards.
7.What is the process for return or replacement of S25FL204K0TMFI041?
All S25FL204K0TMFI041 units undergo pre-shipment inspection (PSI). If there is an issue with S25FL204K0TMFI041, 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 S25FL204K0TMFI041 part is unused and in its original packaging.
Return procedure for S25FL204K0TMFI041:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S25FL204K0TMFI041 Tags

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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24C04C-SSHM-T
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