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Renesas AT25XE041B-MHN-T
- Part No.:
- AT25XE041B-MHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25XE041B-MHN-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,787
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Product details
Overview
AT25XE041B-MHN-T from Renesas Electronics is a 4-Mbit serial SPI Flash memory IC supporting Dual-I/O operation, 85 MHz max clock frequency, 1.65–3.6 V supply, and industrial temperature range (–40°C to +85°C). It features 256-byte page erase, 4/32/64-kByte uniform block erase, hardware write protection via WP pin, and a 128-byte OTP security register with factory-programmed unique ID - used for firmware storage in embedded microcontrollers and secure boot applications.
For engineers reviewing the AT25XE041B-MHN-T datasheet, AT25XE041B-MHN-T pinout, AT25XE041B-MHN-T application, or AT25XE041B-MHN-T equivalent, key selection considerations include SPI Mode 0/3 compatibility, ultra-low 200 nA deep power-down current, dual-input programming capability, sector protection granularity, and package-specific timing compliance across SOIC, TSSOP, UDFN, and WLCSP variants.
Technical Context
The AT25XE041B-MHN-T implements a flexible multi-granularity erase architecture with discrete 256-byte pages and uniform 4-kByte, 32-kByte, and 64-kByte blocks - enabling efficient code+data co-storage without over-erasure. Its SPI interface supports standard single-I/O read/write and accelerated dual-output read/dual-input program modes using SI (I/O0) and SO (I/O1) pins.
Internally, it integrates a status register with active interrupt flag, hardware/software sector locking via WP pin and command set, and an OTP security register split into 64-byte factory-locked and 64-byte user-programmable sections - all operating within JEDEC-standard manufacturer/device ID identification and full industrial temperature compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KByte) - sufficient for bootloader, firmware image, and configuration data in resource-constrained MCU systems. |
| Interface | SPI-compatible, Modes 0 and 3 - ensures interoperability with ARM Cortex-M, RISC-V, and legacy microcontroller SPI peripherals. |
| Max Clock Frequency | 85 MHz - enables high-throughput firmware reads (tV = 6 ns), reducing boot latency in time-critical embedded applications. |
| Erase Granularity | 256-byte page / 4-kByte / 32-kByte / 64-kByte blocks - allows precise firmware patching and data logging without disturbing adjacent code segments. |
| Power Consumption | 200 nA ultra-deep power-down current - extends battery life in always-on IoT edge nodes during sleep cycles. |
| Data Retention | 20 years - guarantees long-term reliability of stored calibration data, device identity, and encrypted keys across product lifecycle. |
| Endurance | 100,000 program/erase cycles (–40°C to +85°C) - supports frequent field firmware updates in industrial gateways and automotive telematics modules. |
Pinout & Package
AT25XE041B-MHN-T is packaged in an 8-lead SOIC (150-mil) body measuring 5.0 × 4.0 × 1.5 mm, with gull-wing leads and RoHS-compliant matte tin plating. Pin 1 is marked by a beveled corner or dot; pin numbering follows standard counter-clockwise orientation when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal - must transition low before command input and high after completion; holds device in standby (not deep power-down) when deasserted. |
| SCK | Serial Clock | Master-generated clock - rising edge latches SI data; falling edge clocks SO data; defines timing for all SPI transactions including dual-I/O modes. |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Primary command/address/data input; becomes I/O0 output during dual-output read - enables 2-bit-per-cycle throughput for faster firmware loading. |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Standard output for read operations; remains I/O1 during dual-output read - pairs with SI to deliver two bits per SCK falling edge. |
| WP | Write Protect | Hardware lock control - low state enables hardware-based sector protection independent of software commands; internally pulled-high. |
| HOLD | Communication Hold | Pauses ongoing SPI transfer without deselecting device - useful for interrupt servicing in real-time systems; internally pulled-high. |
| VCC | Power Supply | Single 1.65–3.6 V rail - eliminates need for charge pumps or auxiliary voltage regulators in low-voltage designs. |
| GND | Ground Reference | System ground return path - must be low-impedance and decoupled near VCC pin to maintain signal integrity during fast read/write cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Support | Enables 2× read bandwidth vs. standard SPI - reduces firmware load time by up to 50% in boot-critical applications. |
| Flexible Erase Architecture | Supports page (256 B), 4-kB, 32-kB, 64-kB, and full-chip erase - minimizes wasted space and enables atomic firmware updates. |
| 128-byte OTP Security Register | 64-byte factory-unique ID + 64-byte user-programmable space - provides tamper-resistant device serialization and key storage for secure boot chains. |
| Ultra-Low Power Modes | 200 nA ultra-deep power-down and 4.5 µA deep power-down - meets energy budget requirements for battery-powered wireless sensors. |
| Hardware Write Protection | WP pin enables physical lock of protected sectors - prevents accidental or malicious firmware overwrite during field operation. |
Applications
| Secure Boot Storage | Firmware Update Buffer |
|---|---|
Use Scenario: Storing signed bootloader images and public key certificates in embedded systems requiring cryptographic verification at power-on. IC Role / Device Role / Timing Role: Non-volatile storage for immutable root-of-trust assets; accessed during early boot phase before RAM initialization. Use Value: Factory-programmed 64-byte unique ID enables device-specific key binding; hardware WP prevents runtime corruption of critical boot code. | Use Scenario: Holding validated firmware patches in edge gateways prior to atomic flash update, minimizing downtime during OTA deployments. IC Role / Device Role / Timing Role: Secondary code storage partitioned from main application flash - isolated for safe staging and rollback. Use Value: 256-byte page erase allows patch installation without erasing entire application; dual-input programming accelerates patch write time. |
| Industrial Sensor Calibration Data | Automotive Telematics Configuration |
Use Scenario: Retaining factory-calibrated sensor coefficients and environmental compensation tables across power cycles in smart transmitters. IC Role / Device Role / Timing Role: Persistent parameter storage accessed during sensor initialization; updated only during calibration service events. Use Value: 20-year data retention ensures accuracy over product lifetime; 100K endurance supports periodic recalibration in field service. | Use Scenario: Storing vehicle-specific CAN message routing rules, GPS geofence definitions, and driver profile settings in connected car modules. IC Role / Device Role / Timing Role: Configurable non-volatile memory mapped into MCU address space via SPI; read at startup and updated via diagnostic interface. Use Value: Uniform 4-kB block erase enables safe reprogramming of config sets without affecting firmware; -40°C to +85°C rating matches under-hood thermal 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, 1.7–3.6 V, 104 MHz max clock, but lacks OTP security register and ultra-deep power-down (250 nA typical vs. 200 nA). | Supports quad-I/O and QPI modes - better suited for high-bandwidth display firmware loading, not secure boot. | Select if higher clock speed and quad interface are required; avoid if unique ID or ultra-low sleep current is mandatory. |
| Micron MT25QL04A | 4 Mbit, 1.7–3.6 V, 133 MHz, includes 64-byte OTP but no factory-programmed unique ID; deep power-down current is 2 µA (vs. 4.5 µA). | Offers octal DTR support and enhanced security features (secure OTP lock); requires different command set and timing margins. | Choose for advanced security extensions and future-proof octal interface; verify command compatibility and layout changes for SCK/SI/SO timing. |
Compared with W25Q40EW and MT25QL04A, the AT25XE041B-MHN-T delivers superior ultra-low-power sleep performance and integrated factory-unique serialization - making it optimal for battery-operated secure boot and calibration-critical applications where minimal footprint and deterministic low-power behavior are design priorities.
Availability
AT25XE041B-MHN-T is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive telematics modules, and secure IoT edge devices requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT25XE041B-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 microcontrollers, analog, power, and memory solutions for automotive, industrial, infrastructure, and IoT applications.
The AT25XE041B belongs to Renesas' serial Flash memory product line, engineered specifically for code+data co-storage in cost-sensitive, power-constrained embedded systems requiring robust security and industrial-grade reliability.
FAQ
What is the operating voltage range for the AT25XE041B-MHN-T?
The AT25XE041B-MHN-T operates from 1.65 V to 3.6 V across the full industrial temperature range (–40°C to +85°C), with no separate programming voltage required. This single-supply design simplifies power architecture in battery-powered and low-voltage MCU systems, eliminating the need for charge pumps or auxiliary regulators during program/erase cycles. The AT25XE041B-MHN-T maintains full functionality and timing compliance across this entire range.
Does the AT25XE041B-MHN-T support dual-I/O read mode, and how is it enabled?
Yes, the AT25XE041B-MHN-T supports dual-output read mode using the 0Bh opcode, which outputs data on both SI (I/O0) and SO (I/O1) pins simultaneously on each SCK falling edge. This mode doubles read bandwidth versus standard single-I/O operation. To enable it, the host MCU must issue the correct command sequence with valid address and ensure CS remains asserted throughout the transaction. The AT25XE041B-MHN-T automatically configures pin functions upon command recognition.
How does the hardware write protection (WP) pin function on the AT25XE041B-MHN-T?
The WP pin on the AT25XE041B-MHN-T provides hardware-level sector locking: when held low, it enables hardware-controlled protection of designated memory regions independent of software commands. It works in conjunction with status register bits (BPL, SEC, TB, BP[2:0]) to define protected sectors. The AT25XE041B-MHN-T's WP pin is internally pulled-high, so it can be left floating if unused - though external connection to VCC is recommended for noise immunity.
What is the purpose and structure of the OTP security register in the AT25XE041B-MHN-T?
The AT25XE041B-MHN-T includes a 128-byte OTP security register: the first 64 bytes are factory-programmed with a unique device identifier (e.g., serial number or ESN), while the remaining 64 bytes are user-programmable for keys, certificates, or custom data. Once written, OTP bytes cannot be erased or rewritten - ensuring permanent, tamper-resistant storage essential for secure boot and device authentication. The AT25XE041B-MHN-T supports dedicated Program/Read OTP commands (3Ah/3Bh) with status polling.
What are the erase time specifications for different block sizes in the AT25XE041B-MHN-T?
The AT25XE041B-MHN-T specifies typical erase times of 2 ms for 256-byte page erase, 45 ms for 4-kByte block erase, 360 ms for 32-kByte block erase, and 720 ms for 64-kByte block erase - all measured at VCC = 3.0 V and TA = 25°C. These values scale predictably across voltage and temperature ranges per datasheet Table 19. The AT25XE041B-MHN-T includes automatic erase failure detection and status reporting to prevent silent corruption.
AT25XE041B-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:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.75ms
- 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)
AT25XE041B-MHN-T FAQ
1.How can I place an order for AT25XE041B-MHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE041B-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 AT25XE041B-MHN-T reliable?
The price and inventory of AT25XE041B-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 AT25XE041B-MHN-T is usually 5 days.
3.What payment methods are accepted for AT25XE041B-MHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE041B-MHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE041B-MHN-T?
AT25XE041B-MHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE041B-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 AT25XE041B-MHN-T?
For technical support, including AT25XE041B-MHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE041B-MHN-T requirements.
6.How does Aetrix verify that AT25XE041B-MHN-T is sourced from the original manufacturer or authorized distributors?
All AT25XE041B-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 AT25XE041B-MHN-T meets industry standards.
7.What is the process for return or replacement of AT25XE041B-MHN-T?
All AT25XE041B-MHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE041B-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 AT25XE041B-MHN-T part is unused and in its original packaging.
Return procedure for AT25XE041B-MHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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