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Renesas AT25DF041B-XMHN-B
- Part No.:
- AT25DF041B-XMHN-B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25DF041B-XMHN-B.pdf
- Description:
- IC FLASH 4MBIT SPI 104MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,807
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Product details
Overview
AT25DF041B-XMHN-B 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-XMHN-B datasheet, AT25DF041B-XMHN-B pinout, AT25DF041B-XMHN-B application, or AT25DF041B-XMHN-B equivalent, key selection criteria include dual-I/O throughput, 256-byte page erase granularity, OTP security register usability, industrial temperature compliance, and SOIC-8 package compatibility with legacy PCB footprints.
Technical Context
The AT25DF041B-XMHN-B implements a flexible erase architecture with four uniform block sizes (4/32/64 kByte) plus 256-byte page erase, enabling efficient co-location of firmware code and runtime data without cross-contamination. Its SPI interface uses standard 4-wire signaling (CS/SCK/SI/SO) with dual-output mode repurposing SI as I/O0 during reads to double data rate.
Internal control logic handles automatic program/erase verification, status reporting, and deep power-down entry/exit via dedicated commands. The 128-byte OTP register contains factory-programmed unique ID and user-programmable fields for secure device serialization or key storage - independent of main array operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KByte) main array for firmware boot code and configuration data storage |
| Interface Protocol | SPI-compatible with Modes 0 and 3; Dual-I/O read enables 2-bit-per-cycle output for higher bandwidth |
| Max Clock Frequency | 104 MHz - supports fast sequential reads with 6 ns tV for low-latency code execution |
| Erase Granularity | 256-byte page, 4/32/64 kByte blocks - minimizes wasted space when updating partial firmware images |
| Supply Voltage Range | 1.65 V to 3.6 V - compatible with single-supply 1.8 V or 3.3 V microcontroller systems |
| Power Consumption | 200 nA ultra-deep power-down current - enables multi-year battery operation in always-on IoT nodes |
| Data Retention | 20 years at +85 °C - ensures long-term reliability for automotive and industrial deployments |
Pinout & Package
AT25DF041B-XMHN-B is packaged in an 8-lead SOIC (150-mil) with standard pinout compatible with JEDEC MS-012AC. All pins are electrically defined per Renesas DS-AT25DF041B-040 Rev. H.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable signal; rising edge ends operations, falling edge initiates command sequences |
| SCK | Serial clock input | Drives all timing; data latched on rising edge, output shifted on falling edge |
| SI (I/O0) | Serial input / Dual-I/O output | Command/address/data input; becomes I/O0 output during Dual-Output Read for parallel bit streaming |
| SO (I/O1) | Serial output / Dual-I/O output | Main data output; remains I/O1 during Dual-Output Read to deliver LSB/MSB pairs per SCK cycle |
| WP | Hardware write protect input | Low-active pin enabling sector-level hardware locking independent of software commands |
| HOLD | Communication pause input | Low-active signal suspends SPI transfer without resetting internal state or aborting ongoing erase/program |
| VCC | Power supply | 1.65–3.6 V single supply; powers core logic, memory array, and I/O buffers |
| GND | Ground reference | System return path for all internal circuits and I/O drivers |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Enables 2-bit-per-clock-cycle data output using SI+SO pins, doubling effective read bandwidth over standard SPI |
| Flexible Erase Architecture | Supports 256-byte page, 4/32/64 kByte block, and full-chip erase - optimizes memory utilization for mixed code/data applications |
| 128-Byte OTP Security Register | Contains 64-byte factory-unique ID + 64-byte user-programmable field for ESN, keys, or calibration data with permanent retention |
| Ultra-Low Power States | 200 nA ultra-deep power-down and 5 µA deep power-down allow energy harvesting and battery-powered designs |
| Hardware Write Protection | WP pin enables physical lock of protected sectors without software intervention - critical for bootloader integrity |
Applications
| Industrial PLC Firmware Storage | Medical Sensor Data Logger |
|---|---|
Use Scenario: Storing firmware updates and configuration parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Non-volatile code storage with fast random-access read capability and deterministic page erase for safe over-the-air updates. Use Value: 256-byte page erase enables patch-level firmware updates without erasing entire application modules, reducing downtime and flash wear. | Use Scenario: Capturing time-stamped physiological measurements in portable diagnostic devices with limited battery capacity. IC Role / Device Role / Timing Role: Low-power data buffer that retains sensor logs during sleep cycles and supports burst writes after acquisition intervals. Use Value: 200 nA ultra-deep power-down current extends battery life beyond 5 years in intermittent-sampling applications. |
| Automotive Infotainment Boot Memory | Smart Home Hub Configuration Store |
Use Scenario: Hosting boot code and UI assets for head-unit systems requiring AEC-Q100-compliant components. IC Role / Device Role / Timing Role: Primary boot memory mapped to MCU address space via SPI XIP or shadow load; supports fast dual-I/O reads for UI responsiveness. Use Value: 104 MHz clock rate and 6 ns tV minimize boot latency while maintaining compatibility with automotive-grade 125 °C extended temperature operation. | Use Scenario: Storing network credentials, user preferences, and OTA update metadata in always-connected residential gateways. IC Role / Device Role / Timing Role: Secure parameter store leveraging OTP register for MAC address binding and encrypted key storage. Use Value: Factory-programmed 64-byte unique ID enables device-specific cryptographic key derivation without external secure elements. |
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 supply range only; no ultra-deep power-down mode (min 1 µA) | Limited to 1.8 V systems; lacks 200 nA power state for ultra-low-energy use cases | Select if operating exclusively at 1.8 V and deep power-down current is not critical |
| Micron MT25QL04A | 4 Mbit, supports octal DTR mode up to 200 MHz; requires 3.0–3.6 V supply; larger 4 kB erase sector only | Higher performance but incompatible voltage range and less granular erase - unsuitable for mixed-voltage or partial-update designs | Choose only for 3.3 V systems needing maximum read speed and where full-sector updates are acceptable |
Compared with W25Q40EW and MT25QL04A, AT25DF041B-XMHN-B uniquely balances wide voltage operation (1.65–3.6 V), ultra-low power states (200 nA), fine-grained 256-byte erase, and Dual-I/O throughput - making it optimal for battery-powered, multi-voltage, and safety-critical embedded firmware storage.
Availability
AT25DF041B-XMHN-B is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical sensor data logging, automotive infotainment boot memory, and smart home hub configuration storage requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT25DF041B-XMHN-B 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, infrastructure, and IoT applications.
The AT25DF041B belongs to Renesas' serial Flash memory product line, engineered specifically for reliable, low-power, and flexible code + data storage in cost-sensitive, high-volume embedded systems.
FAQ
What is the operating temperature range supported by the AT25DF041B-XMHN-B?
The AT25DF041B-XMHN-B is rated for full industrial operation from –40 °C to +85 °C. It also supports extended temperature operation up to +125 °C with adjusted endurance specifications (20,000 P/E cycles). This dual-range capability makes AT25DF041B-XMHN-B suitable for both standard industrial controls and under-hood automotive subsystems where thermal robustness is required.
Does the AT25DF041B-XMHN-B support true SPI Mode 3, and how is clock polarity handled?
Yes, AT25DF041B-XMHN-B fully supports SPI Mode 3, where the serial clock (SCK) is idle high and data is sampled on the rising edge. The device accepts both Mode 0 (SCK idle low) and Mode 3 (SCK idle high) without configuration - automatically detecting polarity based on initial CS assertion timing. This eliminates need for mode-select pins or firmware reconfiguration when interfacing with diverse host controllers.
How does the Dual-I/O Read function work on the AT25DF041B-XMHN-B, and what command enables it?
The AT25DF041B-XMHN-B enables Dual-I/O Read using the 0BBh opcode, which configures both SI (I/O0) and SO (I/O1) as simultaneous outputs. Each falling edge of SCK clocks out two bits - one on SO (MSB) and one on SI (LSB) - effectively doubling read throughput versus standard single-I/O mode. This mode requires no additional hardware and operates within the same 8-lead SOIC footprint.
Can the AT25DF041B-XMHN-B be used in 1.8 V systems, and what is its minimum supply voltage?
Yes, AT25DF041B-XMHN-B is explicitly specified for operation down to 1.65 V, making it fully compatible with 1.8 V nominal systems across the full –40 °C to +85 °C temperature range. Its guaranteed functionality at 1.65 V allows robust operation even under brown-out conditions or with aging batteries - a key advantage over Flash devices requiring ≥1.7 V minimum.
What is the purpose and structure of the OTP Security Register in the AT25DF041B-XMHN-B?
The AT25DF041B-XMHN-B includes a 128-byte OTP Security Register divided into two 64-byte sections: the first is factory-programmed with a unique device identifier (e.g., ESN), and the second is user-programmable once. This register supports secure device authentication, cryptographic key binding, and tamper-resistant calibration storage - all independent of main array erase cycles and retained for the device's lifetime.
AT25DF041B-XMHN-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-TSSOP
AT25DF041B-XMHN-B FAQ
1.How can I place an order for AT25DF041B-XMHN-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF041B-XMHN-B 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-XMHN-B reliable?
The price and inventory of AT25DF041B-XMHN-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DF041B-XMHN-B is usually 5 days.
3.What payment methods are accepted for AT25DF041B-XMHN-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF041B-XMHN-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF041B-XMHN-B?
AT25DF041B-XMHN-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF041B-XMHN-B 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-XMHN-B?
For technical support, including AT25DF041B-XMHN-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF041B-XMHN-B requirements.
6.How does Aetrix verify that AT25DF041B-XMHN-B is sourced from the original manufacturer or authorized distributors?
All AT25DF041B-XMHN-B 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-XMHN-B meets industry standards.
7.What is the process for return or replacement of AT25DF041B-XMHN-B?
All AT25DF041B-XMHN-B units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF041B-XMHN-B, 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-XMHN-B part is unused and in its original packaging.
Return procedure for AT25DF041B-XMHN-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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