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Renesas AT25DF041B-XMHNHR-T
- Part No.:
- AT25DF041B-XMHNHR-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25DF041B-XMHNHR-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,636
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Product details
Overview
AT25DF041B-XMHNHR-T from Renesas Electronics is a 4-Mbit serial SPI Flash memory IC designed for code shadowing and data storage in embedded 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-XMHNHR-T datasheet, AT25DF041B-XMHNHR-T pinout, AT25DF041B-XMHNHR-T application, or AT25DF041B-XMHNHR-T 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-XMHNHR-T implements a flexible hierarchical erase architecture supporting page (256 B), uniform 4-kB/32-kB/64-kB block, and full-chip erase - enabling efficient co-location of firmware code and runtime data without cross-contamination. Its SPI interface uses standard four-wire signaling (CS/SCK/SI/SO) with dual-output read mode repurposing SI as I/O0 to double data throughput per SCK cycle.
Internal control logic enforces hardware-based sector locking via the active-low WP pin and supports software-controlled protection commands. The device includes a 128-byte OTP security register (64 B factory-programmed unique ID + 64 B user-programmable), and features ultra-deep power-down mode drawing only 200 nA typical current - critical for battery-backed or energy-harvesting applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB) organized as 64 kByte array with uniform sector/block/page layout |
| Interface | SPI-compatible, Modes 0 and 3; Dual-I/O read enables 2-bit-per-cycle output on SI/SO |
| Max Clock Frequency | 104 MHz - enables ≤6 ns tV (clock-to-output), supporting high-speed code fetch in MCU boot scenarios |
| Erase Granularity | 256-byte page, 4-kB/32-kB/64-kB uniform blocks - minimizes wasted space when updating partial firmware or logging data |
| Supply Voltage Range | 1.65 V to 3.6 V - interoperable with 1.8 V and 3.3 V logic domains without level shifters |
| Power Consumption | 200 nA ultra-deep power-down current (typical) - extends shelf life and battery runtime in always-on edge nodes |
| Data Retention | 20 years at +85 °C - ensures long-term reliability for automotive and industrial firmware storage |
| Endurance | 100,000 program/erase cycles at –40 °C to +85 °C - supports frequent field firmware updates |
Pinout & Package
AT25DF041B-XMHNHR-T is packaged in an industry-standard 8-lead SOIC (150-mil) with gull-wing leads, compatible with automated SMT assembly and legacy board layouts. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; must transition low-to-high to terminate self-timed operations (e.g., erase); deassertion places SO in high-Z |
| SCK | Serial Clock | Input controlling data timing; rising edge latches SI/I/O0 input; falling edge clocks SO/I/O1 output |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Standard command/address/data input; becomes output (I/O0) during Dual-Output Read to deliver LSB-aligned data |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Standard data output; remains output (I/O1) during Dual-Output Read to deliver MSB-aligned data alongside I/O0 |
| WP | Write Protect | Active-low hardware lock for sector protection; internally pulled high; floating allowed but VCC tie recommended |
| HOLD | Hold Control | Active-low pause signal; suspends SPI communication without resetting internal state; requires CS asserted and SCK low to activate |
| VCC | Power Supply | 1.65–3.6 V core supply; powers all logic and memory array; no separate programming voltage required |
| GND | Ground Reference | System ground return path; must be low-impedance and co-located with VCC decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Enables 2-bit-per-clock-cycle data transfer using SI and SO as concurrent outputs - doubles effective read bandwidth vs. standard SPI |
| Flexible Erase Architecture | Supports 256-byte page, 4-kB/32-kB/64-kB uniform blocks, and full-chip erase - reduces memory fragmentation in mixed code/data deployments |
| 128-Byte OTP Security Register | 64 bytes factory-programmed with unique device identifier + 64 bytes user-writable - enables secure serialization and ESN storage without external crypto IC |
| Ultra-Deep Power-Down | 200 nA typical standby current - allows multi-year operation on coin-cell batteries in IoT sensor nodes and wearables |
| Hardware Write Protection | WP pin provides immediate, glitch-immune sector locking independent of software state - prevents accidental firmware corruption during brown-out |
| Industrial Temperature Range | Rated for –40 °C to +85 °C operation - validated for use in automotive infotainment, industrial HMIs, and outdoor gateways |
Applications
| Automotive Instrument Clusters | Industrial PLC Firmware Storage |
|---|---|
|
Use Scenario: Storing calibrated display graphics, gauge animations, and safety-critical boot firmware in digital instrument clusters. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast random-access read capability via Dual-I/O mode to meet real-time rendering deadlines. Use Value: 6 ns clock-to-output and 104 MHz clock support reduce boot latency; 20-year data retention ensures lifetime calibration integrity. |
Use Scenario: Holding programmable logic controller (PLC) ladder logic, configuration parameters, and firmware update images in factory automation systems. IC Role / Device Role / Timing Role: Field-upgradable firmware repository with hardware write protection to prevent unauthorized modification during runtime. Use Value: WP pin enables fail-safe sector locking; 100,000 endurance cycles support frequent firmware revisions over 10+ year product lifecycles. |
| Smart Home Hub Boot Memory | Medical Diagnostic Device Log Storage |
|
Use Scenario: Hosting bootloader and Linux kernel image in Wi-Fi/Zigbee smart home hubs requiring rapid cold-start and OTA updates. IC Role / Device Role / Timing Role: Primary boot memory interfaced directly to ARM Cortex-A application processor via quad-SPI-capable GPIO pins. Use Value: Dual-I/O read mode accelerates kernel load time; 1.65 V min supply enables direct connection to 1.8 V SoC I/O rails without level translation. |
Use Scenario: Capturing timestamped sensor diagnostics, calibration logs, and audit trails in portable ultrasound and ECG devices. IC Role / Device Role / Timing Role: Secure, low-power data logger using page-erase granularity to append records without erasing prior clinical history. Use Value: 256-byte page erase minimizes write latency and power spikes; OTP register stores device-specific medical ID compliant with FDA UDI requirements. |
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-voltage supply; no OTP register; supports Quad SPI but not Dual-I/O read | Lacks hardware OTP for serialization; requires external secure element for ESN; better suited for cost-sensitive consumer electronics | Select W25Q40EW if Quad SPI bandwidth > Dual-I/O and OTP is unnecessary; verify 1.65 V minimum supply compatibility |
| Micron MT25QL04A | 4 Mbit, 1.7–2.0 V / 2.7–3.6 V supply; supports Octal DTR mode; includes 64-byte OTP but no factory-unique ID | Higher performance in Octal mode but larger footprint (8-pin WSON); lacks factory-programmed UID for plug-and-play traceability | Choose MT25QL04A for systems needing future upgrade path to Octal DTR; accept manual UID provisioning if factory ID not required |
Compared with W25Q40EW and MT25QL04A, AT25DF041B-XMHNHR-T uniquely combines 1.65 V minimum supply, factory-programmed UID in OTP, and Dual-I/O read - making it optimal for space-constrained, battery-powered, and traceability-critical embedded designs where legacy SOIC-8 footprint is mandated.
Availability
AT25DF041B-XMHNHR-T is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLC firmware storage, and smart home hub boot memory requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AT25DF041B-XMHNHR-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 enterprise applications.
The AT25DF041B belongs to Renesas' serial Flash memory product line, engineered for reliable code execution and data logging in resource-constrained embedded systems operating across extended industrial temperatures.
FAQ
What is the minimum supply voltage required for reliable operation of the AT25DF041B-XMHNHR-T?
The AT25DF041B-XMHNHR-T operates reliably down to 1.65 V across the full industrial temperature range (–40 °C to +85 °C). This 1.65 V minimum enables direct interfacing with 1.8 V logic families without level-shifting circuitry, reducing BOM cost and board area in low-power embedded designs. Operation below 1.65 V is not guaranteed and may result in data corruption or command failure.
Does the AT25DF041B-XMHNHR-T support Quad SPI mode?
No, the AT25DF041B-XMHNHR-T does not support Quad SPI mode. It supports standard SPI Modes 0 and 3 with single- and dual-I/O read capabilities - using SI and SO as concurrent outputs during Dual-Output Read. Quad SPI functionality (four I/O lines) is not implemented; users requiring quad mode should evaluate alternatives such as the Renesas AT25SF041 or Winbond W25Q40EW.
How is the 128-byte OTP security register structured in the AT25DF041B-XMHNHR-T?
The AT25DF041B-XMHNHR-T's 128-byte OTP security register is split into two 64-byte segments: the first 64 bytes are factory-programmed with a unique device identifier (UID) and cannot be modified; the second 64 bytes are user-programmable once and retain data for 20 years. Programming requires the Program OTP Security Register command (51h) and is irreversible - enabling secure device serialization and locked key storage.
What package type is used for the AT25DF041B-XMHNHR-T?
The AT25DF041B-XMHNHR-T uses an 8-lead SOIC (150-mil) package - a standard surface-mount outline with gull-wing leads, 1.27 mm pitch, and 5.3 mm × 4.4 mm body dimensions. This package is fully compatible with legacy PCB footprints used for earlier Atmel/Renesas serial Flash devices and supports reflow soldering per J-STD-020.
Can the AT25DF041B-XMHNHR-T perform page erase operations smaller than 4 kBytes?
Yes, the AT25DF041B-XMHNHR-T supports true 256-byte page erase - the smallest erase unit available. This granularity allows precise in-field updates of individual firmware modules or data records without disturbing adjacent memory regions, significantly improving memory utilization efficiency compared to devices limited to 4-kB minimum erase blocks.
AT25DF041B-XMHNHR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- 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:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.5ms
- Access Time:
- -
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT25DF041B-XMHNHR-T FAQ
1.How can I place an order for AT25DF041B-XMHNHR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF041B-XMHNHR-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-XMHNHR-T reliable?
The price and inventory of AT25DF041B-XMHNHR-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-XMHNHR-T is usually 5 days.
3.What payment methods are accepted for AT25DF041B-XMHNHR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF041B-XMHNHR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF041B-XMHNHR-T?
AT25DF041B-XMHNHR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF041B-XMHNHR-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-XMHNHR-T?
For technical support, including AT25DF041B-XMHNHR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF041B-XMHNHR-T requirements.
6.How does Aetrix verify that AT25DF041B-XMHNHR-T is sourced from the original manufacturer or authorized distributors?
All AT25DF041B-XMHNHR-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-XMHNHR-T meets industry standards.
7.What is the process for return or replacement of AT25DF041B-XMHNHR-T?
All AT25DF041B-XMHNHR-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF041B-XMHNHR-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-XMHNHR-T part is unused and in its original packaging.
Return procedure for AT25DF041B-XMHNHR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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