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Renesas AT25SF041B-MHB-T
- Part No.:
- AT25SF041B-MHB-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25SF041B-MHB-T.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:310
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Product details
Overview
AT25SF041B-MHB-T from Renesas Electronics is a 4 M-bit Serial Flash memory IC supporting SPI, Dual I/O, and Quad I/O interfaces with up to 108 MHz operation, 2.5–3.6 V supply, and Execute-in-Place (XiP) capability for embedded boot and code storage applications.
For engineers reviewing the AT25SF041B-MHB-T datasheet, AT25SF041B-MHB-T pinout, AT25SF041B-MHB-T application, or AT25SF041B-MHB-T equivalent, key selection criteria include quad-SPI timing compliance, 4 kB/32 kB/64 kB erase granularity, OTP security registers, SFDP support, and deep power-down current of 1.2 µA.
Technical Context
The AT25SF041B-MHB-T implements a flexible SPI command set compliant with JEDEC JESD216 for SFDP, supports all standard SPI modes (0 and 3), and enables high-speed read via 1-1-4, 1-4-4, and 0-4-4 protocols. Its internal architecture includes dual-bank SRAM data buffering and Y-gating logic optimized for continuous burst reads with wrap.
Erase and program operations are fully suspend/resume capable, and memory protection is implemented via non-volatile status register bits (SRP0/SRP1) and hardware WP pin control. The device integrates three 256-byte One-Time Programmable security registers accessible via dedicated commands (42h/44h/48h).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 M-bit (512 KB) organized as 64 × 64 kB blocks; enables compact firmware storage with fine-grained update zones. |
| Max Clock Frequency | 108 MHz in Quad I/O mode; delivers sustained read bandwidth >40 MB/s for XiP and real-time code fetch. |
| Erase Granularity | 4 kB / 32 kB / 64 kB block erase and full-chip erase; allows selective firmware patching without disturbing adjacent code/data. |
| Program Time | 0.4 ms typical for 1–256 byte page program; supports fast incremental configuration updates. |
| Power Consumption | 1.2 µA deep power-down current; extends battery life in always-on IoT edge nodes and low-power MCU systems. |
| Data Retention | 20 years at 85 °C; ensures long-term reliability for industrial controllers and automotive infotainment modules. |
| Endurance | 100,000 program/erase cycles per sector; suitable for field-upgradable firmware with frequent OTA updates. |
Pinout & Package
AT25SF041B-MHB-T is packaged in an 8-pin DFN (2 mm × 3 mm × 0.6 mm), RoHS-compliant, green package with wettable flanks for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition high-to-low to initiate any command sequence and low-to-high to terminate. |
| SCK | Serial Clock | Master-generated clock; rising edge latches SI input, falling edge clocks SO output; supports up to 108 MHz. |
| SI (I/O0) | Serial Input / Quad I/O 0 | Primary command/address/data input; becomes bidirectional I/O0 during Dual/Quad I/O read operations. |
| SO (I/O1) | Serial Output / Quad I/O 1 | Standard output for single-I/O reads; functions as I/O1 in Dual/Quad I/O modes for parallel bit transfer. |
| WP (I/O2) | Write Protect / Quad I/O 2 | Hardware write lock for status registers when QE=0; reconfigured as I/O2 when Quad Enable bit is set. |
| HOLD (I/O3) | Hold / Quad I/O 3 | Pauses ongoing SPI transaction without resetting state; repurposed as I/O3 in Quad I/O mode when QE=1. |
| VCC | Power Supply | 2.5–3.6 V supply; compatible with modern low-voltage MCUs and SoCs without level-shifting. |
| GND | Ground Reference | System ground return path; requires low-impedance connection to minimize noise coupling into SPI signals. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-SPI & XiP Support | Enables direct execution of firmware from flash via 0-4-4 continuous read mode, eliminating external RAM copy overhead. |
| Serial Flash Discoverable Parameters (SFDP) | JESD216-compliant SFDP register provides standardized, host-readable memory topology and timing parameters. |
| Erase/Program Suspend & Resume | Allows interruption of long erase (up to 200 ms) or program operations to service higher-priority host requests. |
| Three 256-byte OTP Security Registers | Immutable storage for cryptographic keys, device IDs, or calibration data; programmed once and locked permanently. |
| User-Definable Memory Protection | Configurable protected region at memory start or end using SRP0/SRP1 bits and WP pin; prevents accidental firmware overwrite. |
Applications
| Industrial PLC Firmware Storage | IoT Edge Node Configuration |
|---|---|
Use Scenario: Storing and executing ladder logic firmware in programmable logic controllers with periodic field updates. IC Role / Device Role / Timing Role: Non-volatile program memory with Execute-in-Place (XiP) support and 4 kB block erase for delta firmware patches. Use Value: Reduces boot time by eliminating RAM load phase and enables secure, atomic firmware updates without system reset. | Use Scenario: Holding sensor calibration tables, network credentials, and OTA update metadata in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-power configuration store with 1.2 µA deep power-down current and OTP registers for immutable keys. Use Value: Extends multi-year battery life while ensuring cryptographic integrity of device identity and update payloads. |
| Automotive Infotainment Boot Code | Medical Device Parameter Storage |
Use Scenario: Booting head unit application code directly from flash in AEC-Q100-qualified systems requiring 20-year data retention. IC Role / Device Role / Timing Role: High-reliability boot memory with 100,000 P/E cycles and -40 °C to +85 °C operation. Use Value: Meets automotive longevity requirements while supporting fast 108 MHz Quad I/O reads for responsive UI rendering. | Use Scenario: Storing FDA-mandated calibration logs, user settings, and safety-critical firmware signatures in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter archive with three OTP registers and hardware write-protection. Use Value: Ensures audit-trail integrity and prevents unauthorized modification of clinical operating parameters. |
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 M-bit density, 133 MHz max clock, same 2.5–3.6 V range, but lacks 0-4-4 continuous read mode and OTP registers. | Supports standard Quad I/O but no Execute-in-Place optimization; less suitable for latency-sensitive XiP use cases. | Select when maximum clock speed is prioritized over XiP efficiency and security features. |
| Micron MT25QL04A | 4 M-bit density, 133 MHz, JESD216 SFDP, but uses different status register layout and lacks HOLD pin functionality in Quad mode. | Requires modified driver support for status register access and has no hardware suspend/resume capability. | Choose for systems already using Micron's MT25QL family toolchain and where suspend/resume is not required. |
Compared with W25Q40EW and MT25QL04A, the AT25SF041B-MHB-T uniquely combines 0-4-4 continuous read for true XiP performance, integrated OTP security registers, and full erase/program suspend-resume - making it optimal for resource-constrained, security-aware embedded designs requiring deterministic timing and long-term data integrity.
Availability
AT25SF041B-MHB-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, IoT edge node configuration, and automotive infotainment boot code requiring stable component supply across extended product lifecycles.
Supply support for AT25SF041B-MHB-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 high-reliability embedded systems requiring Execute-in-Place, low-power operation, and hardware-based security features.
FAQ
What voltage range does the AT25SF041B-MHB-T support?
The AT25SF041B-MHB-T supports a single supply voltage range of 2.5 V to 3.6 V, enabling direct interface with modern low-voltage MCUs and SoCs without external level shifters. This range is validated across the full industrial temperature range (-40 °C to +85 °C) and ensures stable operation during brown-out conditions down to 2.5 V.
Does the AT25SF041B-MHB-T support Execute-in-Place (XiP)?
Yes, the AT25SF041B-MHB-T supports Execute-in-Place via its 0-4-4 Quad I/O continuous read mode, which eliminates opcode transmission overhead and enables deterministic, high-bandwidth instruction fetch directly from flash. This feature is confirmed in the Product Overview section of the official Renesas datasheet DS-AT25SF041B-190.
How many One-Time Programmable (OTP) registers does the AT25SF041B-MHB-T have?
The AT25SF041B-MHB-T includes three 256-byte One-Time Programmable (OTP) security registers, accessible via dedicated commands (42h program, 44h erase, 48h read). These registers are physically fused after programming and provide immutable storage for cryptographic keys, device identifiers, or calibration data.
What is the deep power-down current of the AT25SF041B-MHB-T?
The AT25SF041B-MHB-T draws only 1.2 µA in deep power-down mode (command B9h), as specified in the Electrical Specifications section of the Renesas datasheet. This ultra-low current enables multi-year battery operation in always-on IoT sensors and portable medical devices.
Can the AT25SF041B-MHB-T suspend an ongoing erase or program operation?
Yes, the AT25SF041B-MHB-T supports full erase/program suspend and resume functionality via commands 75h and 7Ah. This allows the host to pause long-duration operations (e.g., 200 ms 64 kB block erase) to handle time-critical interrupts, then resume from the exact point of suspension without data loss or timing recalibration.
AT25SF041B-MHB-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, 2.4ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT25SF041B-MHB-T FAQ
1.How can I place an order for AT25SF041B-MHB-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25SF041B-MHB-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-MHB-T reliable?
The price and inventory of AT25SF041B-MHB-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-MHB-T is usually 5 days.
3.What payment methods are accepted for AT25SF041B-MHB-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25SF041B-MHB-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25SF041B-MHB-T?
AT25SF041B-MHB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25SF041B-MHB-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-MHB-T?
For technical support, including AT25SF041B-MHB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25SF041B-MHB-T requirements.
6.How does Aetrix verify that AT25SF041B-MHB-T is sourced from the original manufacturer or authorized distributors?
All AT25SF041B-MHB-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-MHB-T meets industry standards.
7.What is the process for return or replacement of AT25SF041B-MHB-T?
All AT25SF041B-MHB-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25SF041B-MHB-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-MHB-T part is unused and in its original packaging.
Return procedure for AT25SF041B-MHB-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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