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Renesas AT25SF041B-MAHD-T
- Part No.:
- AT25SF041B-MAHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25SF041B-MAHD-T.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:24,200
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Product details
Overview
AT25SF041B-MAHD-T from Renesas Electronics is a 4 Mbit SPI serial flash memory IC designed for embedded boot code storage and execute-in-place (XiP) applications. It supports dual/quad I/O, operates up to 108 MHz, delivers 1.2 µA deep power-down current, and features 4 kB/32 kB/64 kB block erase with 100,000 program/erase cycles endurance.
For engineers reviewing the AT25SF041B-MAHD-T datasheet, AT25SF041B-MAHD-T pinout, AT25SF041B-MAHD-T application, or AT25SF041B-MAHD-T equivalent, key selection considerations include quad-SPI timing compliance, XiP-ready continuous read (0-4-4), OTP security register support, and SOIC-8 (150-mil) package compatibility with industrial temperature range (-40°C to +85°C).
Technical Context
The AT25SF041B-MAHD-T implements a flexible SPI interface supporting modes 0 and 3, with configurable dual-output (1-1-2), dual-I/O (1-2-2), quad-output (1-1-4), and quad-I/O (1-4-4, 0-4-4) read operations. Its architecture includes dedicated SRAM data buffers and Y/X-decoding logic optimized for low-latency random access in XiP systems.
Memory protection is enforced via status register bits (SRP0/SRP1/BPL) and hardware WP pin control, while erase/program suspend-resume capability enables real-time host interruption of background operations without data loss or timing violation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB) - sufficient for firmware images in resource-constrained microcontrollers and IoT edge nodes. |
| Max Clock Frequency | 108 MHz - enables high-throughput code fetch in XiP configurations with sub-100 ns effective read latency. |
| Erase Granularity | 4 kB / 32 kB / 64 kB blocks and full chip - allows selective firmware update without disturbing configuration or calibration data. |
| Page Program Time | 0.4 ms typical - supports rapid field updates and over-the-air (OTA) patching with minimal host wait time. |
| Deep Power-Down Current | 1.2 µA typical - extends battery life in always-on sensor nodes and wearable devices during idle periods. |
| Data Retention | 20 years - ensures long-term reliability for industrial control firmware and medical device boot code. |
| Endurance | 100,000 program/erase cycles - accommodates frequent firmware revision in development and maintenance phases. |
Pinout & Package
AT25SF041B-MAHD-T is packaged in an 8-pin narrow-body SOIC (150-mil) compliant with JEDEC MS-012, with 1.27 mm pitch and surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition high-to-low to initiate commands and low-to-high to terminate operations. |
| SCK | Serial Clock | Master-generated clock; rising edge latches SI input, falling edge clocks SO output - defines SPI timing domain. |
| SI (I/O0) | Serial Input / Quad I/O 0 | Primary command/address/data input; becomes bidirectional I/O0 during dual/quad I/O reads for parallel bit transfer. |
| SO (I/O1) | Serial Output / Quad I/O 1 | Standard output for single-bit reads; functions as I/O1 in dual/quad modes to double/quadruple data bandwidth per clock cycle. |
| WP (I/O2) | Write Protect / Quad I/O 2 | Hardware write lock for status registers when QE=0; reconfigured as I/O2 in quad mode - requires status register configuration. |
| HOLD (I/O3) | Hold / Quad I/O 3 | Pauses ongoing SPI transaction without resetting state; repurposed as I/O3 in quad mode - enables seamless mode switching. |
| VCC | Power Supply | 2.5 V–3.6 V or 2.7 V–3.6 V operation - supports mixed-voltage system integration with 3.3 V or 2.5 V logic domains. |
| GND | Ground Reference | Common return path for all digital and analog circuitry; requires low-impedance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-SPI with Continuous Read (0-4-4) | Eliminates opcode overhead per read burst, enabling deterministic XiP performance in real-time embedded systems. |
| Three 256-byte OTP Security Registers | Stores immutable keys, certificates, or device identifiers - critical for secure boot and anti-cloning in certified products. |
| Erase/Program Suspend-Resume | Allows host CPU to interrupt background flash operations for urgent tasks, preserving operation state without timeout risk. |
| Serial Flash Discoverable Parameters (SFDP) | Enables automatic driver initialization via standardized JEDEC register - reduces BSP porting effort across MCU platforms. |
| User-Definable Memory Protection | Configurable protected region at start or end of array, controlled by WP pin or status register - prevents accidental firmware overwrite. |
Applications
| Industrial PLC Firmware Storage | IoT Edge Node OTA Updates |
|---|---|
Use Scenario: Storing boot loader and application firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile program memory with execute-in-place (XiP) capability and fast quad-I/O read for deterministic instruction fetch. Use Value: Enables direct code execution from flash, reducing external RAM requirements and system BOM cost while maintaining -40°C to +85°C operational reliability. |
Use Scenario: Hosting firmware images for wireless sensor nodes requiring remote field updates over constrained LPWAN links. IC Role / Device Role / Timing Role: Field-upgradable code storage with page-program flexibility and suspend-resume for concurrent radio and flash activity. Use Value: Supports partial image patching via 4 kB block erase and 0.4 ms page programming, minimizing OTA downtime and energy consumption. |
| Medical Device Boot Code | Automotive Infotainment Configuration |
Use Scenario: Securing boot firmware and calibration data in Class II medical instruments subject to IEC 62304 lifecycle requirements. IC Role / Device Role / Timing Role: Trusted storage with OTP registers for cryptographic keys and SFDP-driven driver validation. Use Value: Meets traceability and integrity mandates via 20-year data retention, 100K-cycle endurance, and hardware-enforced write protection. |
Use Scenario: Storing UI assets, voice model parameters, and regional settings in automotive head units with multi-zone audio processing. IC Role / Device Role / Timing Role: High-bandwidth configuration memory supporting quad-I/O bursts for rapid GUI asset loading during startup. Use Value: Delivers 108 MHz read throughput and continuous read mode to reduce infotainment boot time by >35% versus standard SPI flash. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q40EW | 4 Mbit density, 133 MHz max clock, 1.8 V–3.6 V supply - lacks OTP registers and SFDP v1.6 support. | Lower standby current (0.5 µA) but no deep power-down mode; limited security feature set for secure boot. | Select when maximum clock speed and ultra-low standby dominate over security and XiP optimization. |
| Micron MT25QL04A | 4 Mbit density, 133 MHz max clock, 2.7 V–3.6 V supply - supports octal DTR mode and enhanced SFDP tables. | Higher pin count (16-pin SOIC/WSON), no 8-pin SOIC option; requires PCB redesign for drop-in replacement. | Select when future scalability to higher densities or octal interface is anticipated; not suitable for space-constrained SOIC-8 layouts. |
Compared with Winbond W25Q40EW and Micron MT25QL04A, the AT25SF041B-MAHD-T provides optimal balance of XiP-optimized quad-I/O timing, integrated security (OTP + WP pin), and 8-pin SOIC-150 packaging - making it ideal for cost-sensitive, security-aware embedded designs where layout reuse is critical.
Availability
AT25SF041B-MAHD-T is available at Aetrix Electronics and suitable for industrial PLCs, IoT edge nodes, medical diagnostics equipment, and automotive infotainment systems requiring stable component supply and long-term manufacturability.
Supply support for AT25SF041B-MAHD-T 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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT25SF041B-MAHD-T belongs to Renesas' AT25SF family of SPI flash memories engineered specifically for execute-in-place (XiP) boot and firmware storage in resource-constrained embedded systems.
FAQ
What is the operating voltage range for the AT25SF041B-MAHD-T?
The AT25SF041B-MAHD-T supports two supply voltage ranges: 2.7 V to 3.6 V and 2.5 V to 3.6 V. This dual-voltage capability allows interoperability with both 3.3 V and 2.5 V logic families, simplifying integration into mixed-signal systems without level-shifting circuitry. The device maintains full functionality-including 108 MHz operation and quad-I/O modes-across both ranges.
Does the AT25SF041B-MAHD-T support execute-in-place (XiP) operation?
Yes, the AT25SF041B-MAHD-T is explicitly designed for XiP use. It achieves this through quad-SPI (1-4-4, 0-4-4) modes, continuous read capability that eliminates opcode overhead, and 108 MHz maximum clock frequency-enabling low-latency instruction fetch directly from flash. The datasheet confirms XiP suitability in the Product Overview section on page 6.
How many one-time programmable (OTP) security registers does the AT25SF041B-MAHD-T include?
The AT25SF041B-MAHD-T includes three 256-byte OTP security registers, accessible via dedicated commands (42h program, 48h read, 44h erase). These registers are physically irreversible and used for storing cryptographic keys, unique device IDs, or secure boot manifests-providing hardware-rooted trust for certified applications.
What package type is used for the AT25SF041B-MAHD-T?
The AT25SF041B-MAHD-T uses an 8-pin narrow-body SOIC package (150-mil), per JEDEC MS-012. This standard footprint ensures compatibility with existing PCB layouts designed for legacy SPI flash devices and supports automated assembly using conventional pick-and-place equipment.
Can the AT25SF041B-MAHD-T be used in automotive applications?
The AT25SF041B-MAHD-T is rated for industrial temperature range (–40°C to +85°C) and RoHS-compliant, but it is not AEC-Q100 qualified. For non-safety-critical infotainment or body-control modules where qualification is not mandated, it may be deployed-but Renesas offers AEC-Q100 qualified variants (e.g., AT25SF041B-MAHD-T with automotive suffix) for full compliance.
AT25SF041B-MAHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 108 MHz
- Write Cycle Time - Word, Page:
- 50µs, 2.4ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
AT25SF041B-MAHD-T FAQ
1.How can I place an order for AT25SF041B-MAHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25SF041B-MAHD-T 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 AT25SF041B-MAHD-T reliable?
The price and inventory of AT25SF041B-MAHD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25SF041B-MAHD-T is usually 5 days.
3.What payment methods are accepted for AT25SF041B-MAHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25SF041B-MAHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25SF041B-MAHD-T?
AT25SF041B-MAHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25SF041B-MAHD-T 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 AT25SF041B-MAHD-T?
For technical support, including AT25SF041B-MAHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25SF041B-MAHD-T requirements.
6.How does Aetrix verify that AT25SF041B-MAHD-T is sourced from the original manufacturer or authorized distributors?
All AT25SF041B-MAHD-T 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 AT25SF041B-MAHD-T meets industry standards.
7.What is the process for return or replacement of AT25SF041B-MAHD-T?
All AT25SF041B-MAHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25SF041B-MAHD-T, 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 AT25SF041B-MAHD-T part is unused and in its original packaging.
Return procedure for AT25SF041B-MAHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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