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Renesas AT25SF041B-MHD-T
- Part No.:
- AT25SF041B-MHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25SF041B-MHD-T.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,625
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Product details
Overview
AT25SF041B-MHD-T from Renesas Electronics is a 4 M-bit SPI serial flash memory IC designed for embedded boot code storage and execute-in-place (XiP) applications. It supports dual- and quad-I/O operations (1-1-2, 1-1-4, 1-4-4, 0-4-4), operates up to 108 MHz, delivers 13.3 µA standby current, and features 4 kB/32 kB/64 kB block erase with typical times of 60 ms / 120 ms / 200 ms.
For engineers reviewing the AT25SF041B-MHD-T datasheet, AT25SF041B-MHD-T pinout, AT25SF041B-MHD-T application, or AT25SF041B-MHD-T equivalent, key selection criteria include XiP-read latency, quad-SPI command compatibility (EBh/E7h), OTP security register support, SFDP compliance, and industrial temperature range (-40°C to +85°C) operation.
Technical Context
The AT25SF041B-MHD-T implements a flexible SPI interface supporting modes 0 and 3, with configurable I/O width (single/dual/quad) controlled via Status Register 2's Quad Enable (QE) bit. Its memory array is organized into 128 × 4 kB blocks, enabling granular 4 kB, 32 kB, 64 kB, and full-chip erase operations.
It integrates dedicated control logic for erase/program suspend-resume (75h/7Ah), deep power-down (B9h/ABh), and hardware write protection via WP pin and status register bits (SRP0/SRP1). The device uses internal SRAM data buffers and Y/X-decoder architecture to enable continuous read with wrap (8/16/32/64-byte burst).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 M-bit (512 KB), sufficient for MCU boot firmware and configuration data in space-constrained designs. |
| Max Clock Frequency | 108 MHz - enables high-throughput XiP execution and fast firmware updates over SPI. |
| Erase Time (4 kB block) | 60 ms typical - allows rapid field firmware patching without system downtime. |
| Page Program Time | 0.4 ms typical for 1–256 byte writes - supports efficient runtime parameter logging. |
| Endurance & Retention | 100,000 program/erase cycles and 20-year data retention - meets industrial lifecycle requirements. |
| Supply Voltage Range | 2.5 V – 3.6 V - compatible with modern low-voltage microcontrollers and PMICs. |
| Deep Power-Down Current | 1.2 µA typical - critical for battery-powered IoT edge nodes during sleep states. |
Pinout & Package
AT25SF041B-MHD-T is packaged in an 8-pin narrow-body SOIC (150-mil) with standard JEDEC footprint and gull-wing leads. This package supports reflow soldering and is compatible with automated PCB assembly.
| 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. |
| SI (I/O0) | Serial Input / Quad I/O 0 | Command/address/data input in standard mode; becomes bidirectional I/O0 in dual/quad I/O modes. |
| SO (I/O1) | Serial Output / Quad I/O 1 | Data output in standard mode; becomes bidirectional I/O1 in dual/quad I/O modes. |
| WP (I/O2) | Write Protect / Quad I/O 2 | Hardware write-protection when QE=0; functions as I/O2 in quad-SPI mode (QE=1). |
| HOLD (I/O3) | Hold / Quad I/O 3 | Pauses ongoing SPI transfer without resetting state; functions as I/O3 in quad-SPI mode (QE=1). |
| VCC | Power Supply | 2.5–3.6 V supply; requires local decoupling capacitor per layout guidelines. |
| GND | Ground Reference | System ground return path; must be low-impedance and adjacent to VCC for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-SPI XiP Support (0-4-4) | Enables zero-command-overhead continuous instruction fetch directly from flash, reducing CPU wait states. |
| 3×256-byte OTP Security Registers | Provides immutable storage for cryptographic keys, device IDs, or calibration data resistant to field reprogramming. |
| Serial Flash Discoverable Parameters (SFDP) | Allows host bootloader to auto-detect timing, erase granularity, and command set without hard-coded assumptions. |
| Erase/Program Suspend-Resume | Permits high-priority interrupt service routines to pause background flash operations and resume them later. |
| User-Definable Memory Protection | Configurable lock regions at start/end of array via status register bits, enforced by WP pin or software commands. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing and executing real-time control firmware in programmable logic controllers with deterministic boot timing. IC Role / Device Role / Timing Role: Primary nonvolatile boot memory providing XiP capability for ARM Cortex-M7-based controllers. Use Value: 108 MHz quad-I/O read speed reduces boot time by >40% vs. legacy SPI flash, meeting IEC 61131-3 cycle-time constraints. |
Use Scenario: Securing FDA-compliant boot images and calibration parameters in portable diagnostic equipment. IC Role / Device Role / Timing Role: Trusted firmware storage with OTP registers for asymmetric key storage and secure boot verification. Use Value: 20-year data retention and 100K-cycle endurance ensure long-term reliability across device lifetime without field replacement. |
| Automotive Infotainment Head Unit | Smart Home Gateway Firmware |
Use Scenario: Hosting Linux kernel and root filesystem in automotive-grade infotainment systems requiring AEC-Q100 alignment. IC Role / Device Role / Timing Role: High-speed serial flash supporting dual- and quad-I/O for fast GUI asset loading and OTA update staging. Use Value: 1.2 µA deep power-down current extends battery backup runtime during vehicle ignition-off periods. |
Use Scenario: Storing Zigbee/Z-Wave protocol stacks and encrypted user configuration in always-on residential gateways. IC Role / Device Role / Timing Role: Secure, low-power firmware repository with hardware write protection against remote firmware corruption. Use Value: WP pin + SRP0/SRP1 status bits provide tamper-resistant protection for critical boot sectors during network-based updates. |
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 | Same density (4 M-bit), 133 MHz max clock, but lacks 0-4-4 continuous read mode and OTP registers. | Supports basic XiP but not optimized for ultra-low-latency instruction fetch; no hardware key storage. | Choose when cost sensitivity outweighs XiP latency and security requirements. |
| Micron MT25QL04A | 4 M-bit, 133 MHz, supports SFDP and quad-I/O, but requires external voltage regulator for 1.8 V operation (AT25SF041B-MHD-T supports 2.5–3.6 V natively). | Better suited for 1.8 V SoC interfaces; less ideal for mixed-voltage industrial boards with 3.3 V rails. | Prefer when interfacing with 1.8 V FPGAs or application processors requiring lower I/O voltage. |
Compared with W25Q40EW and MT25QL04A, the AT25SF041B-MHD-T uniquely combines 0-4-4 XiP mode, integrated OTP security, and single-supply 2.5–3.6 V operation-making it optimal for resource-constrained industrial and medical devices demanding both performance and tamper resistance.
Availability
AT25SF041B-MHD-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, automotive infotainment head units, and smart home gateway firmware requiring stable component supply and long-term manufacturability.
Supply support for AT25SF041B-MHD-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 belongs to Renesas' serial flash memory product line, engineered specifically for robust, low-power, and secure embedded boot and code storage in harsh environments.
FAQ
What is the operating temperature range for the AT25SF041B-MHD-T?
The AT25SF041B-MHD-T is rated for industrial operation from -40°C to +85°C. This range ensures reliable performance in factory automation controllers, outdoor gateways, and medical diagnostic equipment where ambient temperatures fluctuate significantly. The specification is validated per JEDEC JESD22-A104 and applies across all supported voltage and frequency conditions.
Does the AT25SF041B-MHD-T support execute-in-place (XiP) functionality?
Yes, the AT25SF041B-MHD-T explicitly supports XiP through its 0-4-4 quad-I/O continuous read mode (command 0x0E), which eliminates opcode transmission overhead and enables seamless instruction fetch. Combined with 108 MHz clock support and internal SRAM buffering, this allows ARM Cortex-M and RISC-V cores to execute directly from flash with minimal latency penalty.
How many one-time programmable (OTP) security registers does the AT25SF041B-MHD-T include?
The AT25SF041B-MHD-T includes three 256-byte OTP security registers, accessible via dedicated commands (42h/44h/48h). These registers are physically fused and cannot be erased or rewritten after programming, making them suitable for storing cryptographic keys, unique device identifiers, or calibration constants that must remain immutable across the product lifecycle.
Can the AT25SF041B-MHD-T operate with a 2.5 V supply?
Yes, the AT25SF041B-MHD-T supports a wide supply range of 2.5 V to 3.6 V, confirmed in the Absolute Maximum Ratings and DC Characteristics sections of the datasheet. At 2.5 V, all specified timing parameters-including 108 MHz maximum clock frequency and 60 ms 4 kB block erase-are fully guaranteed, enabling interoperability with low-voltage microcontrollers and energy-efficient systems.
What package type is used for the AT25SF041B-MHD-T?
The AT25SF041B-MHD-T uses an 8-pin narrow-body SOIC package (150-mil width), as indicated by the "MHD" suffix in the part number per Renesas' ordering information table. This JEDEC-standard package features gull-wing leads, 1.27 mm pitch, and is compatible with standard reflow profiles and automated optical inspection (AOI) systems.
AT25SF041B-MHD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN 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, 800µs
- 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 (5x6)
AT25SF041B-MHD-T FAQ
1.How can I place an order for AT25SF041B-MHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25SF041B-MHD-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-MHD-T reliable?
The price and inventory of AT25SF041B-MHD-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-MHD-T is usually 5 days.
3.What payment methods are accepted for AT25SF041B-MHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25SF041B-MHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25SF041B-MHD-T?
AT25SF041B-MHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25SF041B-MHD-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-MHD-T?
For technical support, including AT25SF041B-MHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25SF041B-MHD-T requirements.
6.How does Aetrix verify that AT25SF041B-MHD-T is sourced from the original manufacturer or authorized distributors?
All AT25SF041B-MHD-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-MHD-T meets industry standards.
7.What is the process for return or replacement of AT25SF041B-MHD-T?
All AT25SF041B-MHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25SF041B-MHD-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-MHD-T part is unused and in its original packaging.
Return procedure for AT25SF041B-MHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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