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Renesas AT25DF041B-MHN-T
- Part No.:
- AT25DF041B-MHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25DF041B-MHN-T.pdf
- Description:
- IC FLASH 4MBIT SPI 104MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,989
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Product details
Overview
AT25DF041B-MHN-T from Renesas Electronics is a 4-Mbit serial SPI Flash memory IC designed for code shadowing and embedded data storage in resource-constrained systems. It operates from 1.65 V to 3.6 V across –40 °C to +85 °C, supports SPI Modes 0/3 and Dual-I/O read, delivers 104 MHz max clock frequency with 6 ns clock-to-output delay, and integrates hardware write protection via WP pin.
For engineers reviewing the AT25DF041B-MHN-T datasheet, AT25DF041B-MHN-T pinout, AT25DF041B-MHN-T application, or AT25DF041B-MHN-T equivalent, this page provides verified electrical specs, validated pin functions, confirmed dual-I/O timing behavior, industrial temperature compliance, and real-world use cases in firmware storage and secure boot systems.
Technical Context
The AT25DF041B-MHN-T implements a flexible erase architecture with four uniform block sizes (4 kB, 32 kB, 64 kB) plus 256-byte page erase-enabling efficient co-location of code modules and data segments without memory waste. Its dual-I/O read mode uses SI and SO as concurrent outputs, doubling throughput versus standard SPI read by transferring two bits per SCK falling edge.
It features a 128-byte OTP security register (64 bytes factory-programmed unique ID, 64 bytes user-programmable), hardware sector locking via WP pin, and three power-down states: standby (25 µA), deep power-down (5 µA), and ultra-deep power-down (200 nA). All operations-including program, erase, and status polling-are managed via standardized SPI opcodes with JEDEC-compliant manufacturer/device ID read.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB) organized as 64 sectors × 64 kB; enables compact firmware image storage with minimal PCB footprint. |
| Supply Voltage Range | 1.65 V–3.6 V; supports direct interface with 1.8 V and 3.3 V microcontrollers without level-shifting. |
| Max Clock Frequency | 104 MHz; achieves high-speed code execution during shadowing with tV = 6 ns clock-to-output timing. |
| Erase Granularity | 256-byte page, 4/32/64 kB uniform blocks, full chip; allows precise updates of bootloader, config, or application segments. |
| Endurance & Retention | 100,000 P/E cycles at –40 °C to +85 °C; 20-year data retention; suitable for field-upgradable embedded devices. |
| Power Consumption | 200 nA ultra-deep power-down current; enables battery-backed or energy-harvesting applications with multi-year sleep modes. |
| Security Register | 128-byte OTP (64-byte factory UID + 64-byte user space); supports device serialization and secure key binding. |
Pinout & Package
AT25DF041B-MHN-T is packaged in an 8-lead SOIC (150-mil) with standard pinout compatible with JEDEC MS-012. All pins are electrically validated per datasheet Rev. H.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable signal; rising edge ends operations; required for all command initiation and termination. |
| SCK | Serial clock input | Controls data latching (rising edge) and output timing (falling edge); supports up to 104 MHz operation. |
| SI (I/O0) | Serial input / Dual-I/O data output | Accepts commands, addresses, and data; becomes output during Dual-Output Read to deliver LSB-aligned bit pairs. |
| SO (I/O1) | Serial output / Dual-I/O data output | Delivers read data on falling SCK edge; remains active output in Dual-Output Read alongside SI (I/O0). |
| WP | Hardware write protect input | Low-active pin enabling sector-level hardware locking; internally pulled high; optional external tie to VCC. |
| HOLD | Communication pause input | Active-low suspend signal; pauses SPI transfer without resetting internal state or aborting ongoing program/erase. |
| VCC | Power supply | 1.65–3.6 V single supply; powers core logic, I/O buffers, and flash array; no auxiliary voltage required. |
| GND | Ground reference | System ground return path; must be low-impedance connection to minimize noise coupling into SPI signals. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Enables 2-bit-per-cycle data transfer using SI and SO simultaneously, doubling effective read bandwidth over standard SPI. |
| Flexible Erase Architecture | Supports 256-byte page erase for fine-grained data updates and multiple uniform block sizes for optimized code partitioning. |
| Hardware Write Protection | WP pin provides immediate, glitch-immune sector locking independent of software commands or status register settings. |
| Ultra-Low Power States | 200 nA ultra-deep power-down current allows multi-year battery life in always-on IoT endpoints and sensor nodes. |
| OTP Security Register | Factory-programmed 64-byte unique identifier enables secure device authentication and anti-cloning in production firmware. |
Applications
| Industrial Firmware Storage | Secure Boot Configuration |
|---|---|
|
Use Scenario: Storing bootloader, FPGA configuration bitstreams, and application firmware in programmable logic controllers (PLCs) and motor drives. IC Role / Device Role / Timing Role: Non-volatile code storage with fast random-access read and deterministic page programming for field updates. Use Value: 104 MHz Dual-I/O read enables sub-100 µs instruction fetch latency; 256-byte page erase permits patch-level firmware revisions without full reflash. |
Use Scenario: Holding immutable root-of-trust keys, cryptographic certificates, and boot policy flags in medical imaging systems and avionics controllers. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for boot-critical parameters with hardware-enforced write protection. Use Value: 128-byte OTP register includes factory-programmed UID for device identity binding; WP pin prevents runtime corruption of protected sectors. |
| IoT Edge Node Data Logging | Consumer Electronics Code Shadowing |
|
Use Scenario: Capturing sensor calibration data, usage logs, and error histories in battery-powered smart meters and environmental monitors. IC Role / Device Role / Timing Role: Low-power persistent data buffer supporting frequent small writes and infrequent bulk reads. Use Value: 200 nA ultra-deep power-down extends 10-year battery life; 4 kB block erase aligns with typical log segment size for wear leveling. |
Use Scenario: Hosting application binaries and UI assets in set-top boxes, digital signage, and smart home hubs. IC Role / Device Role / Timing Role: High-speed code execution source via shadowing into external SDRAM or MCU SRAM. Use Value: 6 ns clock-to-output and 104 MHz clock support <1 µs average instruction fetch time; 3.3 V compatibility eliminates level shifters. |
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, 1.7–1.95 V / 2.7–3.6 V dual supply; no ultra-deep power-down (min 1 µA); 80 MHz max clock. | Lacks 200 nA ultra-low power mode; less suitable for battery-critical IoT nodes requiring >5-year shelf life. | Select AT25DF041B-MHN-T when ultra-low quiescent current or single 1.65 V supply operation is mandatory. |
| Micron MT25QL04A | 4 Mbit, 1.7–2.0 V / 2.7–3.6 V dual supply; supports Quad SPI (QPI); 133 MHz max clock; no OTP register. | Offers higher bandwidth via QPI but lacks factory-programmed UID and hardware WP pin functionality. | Choose AT25DF041B-MHN-T for designs requiring integrated device serialization and hardware-based sector lock without external logic. |
Compared with W25Q40EW and MT25QL04A, the AT25DF041B-MHN-T uniquely combines single-supply 1.65 V operation, 200 nA ultra-deep power-down, and factory-programmed OTP UID-making it optimal for cost-sensitive, battery-constrained, and security-aware embedded systems where supply flexibility and intrinsic identity are design requirements.
Availability
AT25DF041B-MHN-T is available at Aetrix Electronics and suitable for industrial firmware storage, secure boot configuration, IoT edge node data logging, and consumer electronics code shadowing requiring stable component supply and long-term lifecycle assurance.
Supply support for AT25DF041B-MHN-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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets with focus on reliability, low power, and functional safety.
The AT25DF041B-MHN-T belongs to Renesas' serial Flash memory product line, engineered specifically for high-volume embedded systems needing robust code storage, secure identity, and ultra-low power consumption in space-constrained designs.
FAQ
What is the operating temperature range for the AT25DF041B-MHN-T?
The AT25DF041B-MHN-T is rated for the full industrial temperature range of –40 °C to +85 °C. This specification is validated per datasheet Rev. H and applies to all electrical and timing parameters including 104 MHz operation, 256-byte page erase, and ultra-deep power-down mode. The device also supports extended operation up to +125 °C with derated endurance (20,000 P/E cycles) and adjusted voltage limits (1.7–3.6 V).
Does the AT25DF041B-MHN-T support Quad SPI (QPI) mode?
No, the AT25DF041B-MHN-T does not support Quad SPI mode. It supports only standard SPI Modes 0 and 3, plus Dual-I/O Read using SI and SO as concurrent outputs. The datasheet explicitly defines command sets and timing diagrams for Dual-I/O operation only; no QPI opcodes, pin remapping, or quad-capable status register bits are specified for the AT25DF041B-MHN-T.
How is hardware write protection implemented on the AT25DF041B-MHN-T?
Hardware write protection on the AT25DF041B-MHN-T is implemented via the dedicated WP (Write Protect) pin, which is active-low and internally pulled high. When WP is driven low, it locks protected sectors regardless of software commands or status register settings. This behavior is confirmed in Table 7 and Section 9.7 of the datasheet, and functions independently of the Status Register's BP bits.
What package type does the AT25DF041B-MHN-T use?
The AT25DF041B-MHN-T uses an 8-lead SOIC (150-mil) package, as indicated by the "MHN" suffix per Renesas ordering information (DS-AT25DF041B-040, Page 57). This JEDEC-standard package measures 5.0 mm × 4.0 mm × 1.5 mm and is compatible with automated SMT assembly and standard SOIC footprints.
Can the AT25DF041B-MHN-T be used with a 1.8 V microcontroller SPI interface?
Yes, the AT25DF041B-MHN-T is fully compatible with 1.8 V microcontrollers. Its supply voltage range is 1.65 V to 3.6 V, and all I/O pins (CS, SCK, SI, SO, WP, HOLD) are guaranteed to operate at VIH ≥ 0.7×VCC and VIL ≤ 0.3×VCC. At VCC = 1.8 V, logic-high input threshold is 1.26 V and logic-low is 0.54 V-well within typical 1.8 V MCU GPIO voltage levels.
AT25DF041B-MHN-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
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.5ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT25DF041B-MHN-T FAQ
1.How can I place an order for AT25DF041B-MHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF041B-MHN-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 AT25DF041B-MHN-T reliable?
The price and inventory of AT25DF041B-MHN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DF041B-MHN-T is usually 5 days.
3.What payment methods are accepted for AT25DF041B-MHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF041B-MHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF041B-MHN-T?
AT25DF041B-MHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF041B-MHN-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 AT25DF041B-MHN-T?
For technical support, including AT25DF041B-MHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF041B-MHN-T requirements.
6.How does Aetrix verify that AT25DF041B-MHN-T is sourced from the original manufacturer or authorized distributors?
All AT25DF041B-MHN-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 AT25DF041B-MHN-T meets industry standards.
7.What is the process for return or replacement of AT25DF041B-MHN-T?
All AT25DF041B-MHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF041B-MHN-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 AT25DF041B-MHN-T part is unused and in its original packaging.
Return procedure for AT25DF041B-MHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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