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Renesas AT25XE041B-UUN-T
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- Part No.:
- AT25XE041B-UUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
AT25XE041B-UUN-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,382
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Product details
Overview
AT25XE041B-UUN-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 single-supply operation across –40°C to +85°C, and flexible erase architecture (256-Byte page, 4/32/64-kByte blocks, full chip). It serves as nonvolatile code storage and data logging memory in resource-constrained embedded systems.
For engineers reviewing the AT25XE041B-UUN-T datasheet, AT25XE041B-UUN-T pinout, AT25XE041B-UUN-T application, or AT25XE041B-UUN-T equivalent, key selection criteria include Dual-I/O read throughput, ultra-low deep power-down current (200 nA), OTP security register usability, sector protection via WP pin, and compatibility with industrial temperature-grade SPI host controllers.
Technical Context
The AT25XE041B-UUN-T implements a standard SPI interface compliant with Modes 0 and 3, enabling interoperability with legacy and modern microcontrollers. Its Dual-I/O Read mode delivers two bits per SCK falling edge, doubling effective read bandwidth versus standard Single-I/O.
Internally, it features a segmented memory array with uniform 4-kByte, 32-kByte, and 64-kByte erase blocks plus 256-Byte page erase - optimized for mixed code+data firmware updates without over-erasing. The 128-byte OTP security register includes factory-programmed unique ID and user-programmable space for secure boot keys or device binding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 kByte) organized as 65,536 × 8-bit; sufficient for bootloader + application firmware in compact MCU designs. |
| Max Clock Frequency | 85 MHz; enables fast sequential reads (e.g., code shadowing) with tV = 6 ns clock-to-output delay. |
| Erase Granularity | 256-Byte page, 4/32/64-kByte uniform blocks, and full-chip erase; supports fine-grained firmware patching and data logging. |
| Power Consumption | 200 nA ultra-deep power-down current (typical); extends battery life in always-on IoT sensor nodes during sleep cycles. |
| Endurance & Retention | 100,000 program/erase cycles at –40°C to +85°C; 20-year data retention ensures long-term reliability in unattended deployments. |
| Supply Voltage Range | 1.65 V to 3.6 V; compatible with 1.8 V and 3.3 V I/O domains without level shifters in mixed-voltage systems. |
| OTP Security Register | 128-byte one-time programmable register: 64 bytes factory-assigned unique ID + 64 bytes user-writable for ESN or cryptographic keys. |
Pinout & Package
AT25XE041B-UUN-T is packaged in an 8-lead SOIC (150-mil) with standard SPI pinout and hardware write-protect support. Pin functions are fully SPI-compatible and support hold, deep power-down, and dual-I/O modes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates command sequence on high-to-low transition; places SO in high-Z when deasserted. |
| SCK | Serial Clock | Master-generated clock; commands/addresses latched on rising edge; data output on falling edge. |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Input for commands, addresses, and program data; becomes bidirectional I/O0 during Dual-I/O Read. |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Output for read data; remains active I/O1 during Dual-I/O Read to deliver parallel bitstream with I/O0. |
| WP | Write Protect | Hardware lock control; low-active signal to freeze sector protection registers; internally pulled high. |
| HOLD | Hold Control | Pauses ongoing SPI transfer without deselecting device; requires CS asserted and SCK low to activate. |
| VCC | Power Supply | Single 1.65–3.6 V supply; powers all internal logic and memory array; no auxiliary voltage required. |
| GND | Ground Reference | System ground return path; must be low-impedance and co-located with host MCU ground for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Delivers 2-bit data per SCK falling edge, doubling effective read bandwidth vs. standard SPI - critical for fast code execution from flash. |
| Flexible Erase Architecture | Supports 256-Byte page, 4/32/64-kByte block, and full-chip erase - enables precise firmware updates and avoids wasted memory from coarse erases. |
| Hardware + Software Sector Protection | WP pin enables hardware locking of protected sectors; status register bits allow software-based granularity for secure configuration storage. |
| Ultra-Low Power Deep Sleep | 200 nA ultra-deep power-down current (typical) minimizes quiescent drain in battery-powered edge devices during extended idle periods. |
| Factory-Programmed Unique ID | 64-byte factory-assigned identifier in OTP register enables device authentication, secure provisioning, and anti-cloning in production firmware. |
| Industrial Temperature Support | Rated for –40°C to +85°C operation with full specification compliance - suitable for automotive infotainment, industrial HMIs, and outdoor gateways. |
Applications
| Firmware Storage in MCU-Based Edge Nodes | Secure Boot Configuration Storage |
|---|---|
Use Scenario: Storing bootloader and application firmware in battery-powered wireless sensor nodes with limited PCB area and strict power budgets. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast Dual-I/O read for efficient shadowing into RAM; supports in-field OTA updates via page/block erase. Use Value: 85 MHz interface and 6 ns tV reduce boot time; 200 nA deep power-down extends multi-year battery life without compromising update flexibility. |
Use Scenario: Holding immutable root-of-trust keys and verified boot images in medical diagnostic equipment requiring regulatory compliance. IC Role / Device Role / Timing Role: Secure configuration store using OTP register for factory-burned keys and software-controlled sector protection for runtime integrity checks. Use Value: 64-byte factory-unique ID enables device-specific key binding; hardware WP pin prevents accidental overwrite of critical security parameters. |
| Data Logging in Industrial Controllers | Firmware + Parameter Storage in Automotive Telematics |
Use Scenario: Recording sensor history and fault logs in PLC modules operating continuously in harsh factory environments. IC Role / Device Role / Timing Role: High-endurance data buffer with 100,000 P/E cycles; leverages 4-kByte block erase for cyclic log rotation without disturbing firmware partitions. Use Value: Uniform 4-kByte erase blocks align with typical log segment sizes; 20-year data retention ensures archival integrity across product lifetime. |
Use Scenario: Hosting infotainment firmware, calibration tables, and vehicle-specific configuration in automotive telematics control units (TCUs). IC Role / Device Role / Timing Role: Dual-function memory: 4-Mbit density accommodates both code and parameter storage; operates reliably across –40°C to +85°C ambient range. Use Value: Industrial temp grade and JEDEC-compliant ID read ensure traceability and compatibility with automotive qualification workflows. |
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 W25Q40EWUXIE | 4-Mbit, 1.7–3.6 V, 133 MHz max clock, Quad-I/O capable; lacks OTP register and ultra-deep power-down (500 nA vs. 200 nA). | Better raw speed and quad-mode flexibility; less suitable for ultra-low-power or secure serialization use cases. | Choose W25Q40EWUXIE when higher bandwidth or QPI interface is required; select AT25XE041B-UUN-T for lower sleep current and built-in security ID. |
| Micron MT25QL04AAB8E12-0SIT | 4-Mbit, 1.7–2.0 V only (not 1.65 V), 133 MHz, supports Xccela Bus; no OTP register; 10 µA deep power-down (vs. 200 nA). | Requires tighter VCC regulation; optimized for high-speed xSPI hosts, not legacy SPI-only designs. | Choose MT25QL04AAB8E12-0SIT for next-gen xSPI platforms; AT25XE041B-UUN-T fits cost-sensitive, low-power, SPI-native designs with security needs. |
Compared with W25Q40EWUXIE and MT25QL04AAB8E12-0SIT, the AT25XE041B-UUN-T provides superior ultra-low-power operation (200 nA), integrated factory-unique ID, and broader 1.65 V minimum supply - making it optimal for energy-constrained, security-aware, and legacy-SPI-based industrial and automotive applications.
Availability
AT25XE041B-UUN-T is available at Aetrix Electronics and suitable for firmware storage in edge IoT nodes, secure boot configuration in medical devices, and data logging in industrial controllers requiring stable component supply and long-term lifecycle support.
Supply support for AT25XE041B-UUN-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 markets.
The AT25XE041B-UUN-T belongs to Renesas' serial Flash memory product line, engineered for robust, low-power, and secure nonvolatile storage in cost-sensitive embedded systems with stringent reliability requirements.
FAQ
What is the minimum supply voltage required for reliable operation of the AT25XE041B-UUN-T?
The AT25XE041B-UUN-T operates reliably down to 1.65 V across the full industrial temperature range (–40°C to +85°C), enabling direct integration with 1.8 V I/O domains without level-shifting circuitry. This 1.65 V minimum is confirmed in the DC Characteristics table (Table 16) of the official datasheet DS-AT25XE041B-062 Rev. I.
Does the AT25XE041B-UUN-T support Dual-I/O Read, and how does it improve performance?
Yes, the AT25XE041B-UUN-T supports Dual-I/O Read using the SI (I/O0) and SO (I/O1) pins to output two bits per SCK falling edge. This doubles effective read throughput versus standard Single-I/O mode, reducing code shadowing latency - a key advantage for real-time MCU boot and execution scenarios.
How is the OTP security register structured in the AT25XE041B-UUN-T?
The AT25XE041B-UUN-T includes a 128-byte OTP security register: the first 64 bytes are factory-programmed with a unique device identifier, and the remaining 64 bytes are user-programmable once for secure keys, ESNs, or calibration data. Programming is irreversible and verified via status polling.
What erase block sizes does the AT25XE041B-UUN-T support, and why does granularity matter?
The AT25XE041B-UUN-T supports 256-Byte page erase, uniform 4-kByte, 32-kByte, and 64-kByte block erase, and full-chip erase. Fine-grained 256-Byte pages minimize over-erasure during firmware patching; uniform blocks align with common code/data partitioning schemes - improving memory utilization efficiency.
Can the AT25XE041B-UUN-T operate in automotive temperature ranges?
The AT25XE041B-UUN-T is specified for –40°C to +85°C (industrial grade). While it supports extended operation up to +125°C with derated endurance (20,000 cycles), it is not AEC-Q100 qualified. For automotive under-hood applications, Renesas offers automotive-grade variants - the AT25XE041B-UUN-T is intended for cabin, telematics, and industrial environments meeting industrial temp specs.
AT25XE041B-UUN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-XFBGA, WLCSP
- 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-WLCSP (1.63x1.58)
AT25XE041B-UUN-T FAQ
1.How can I place an order for AT25XE041B-UUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE041B-UUN-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-UUN-T reliable?
The price and inventory of AT25XE041B-UUN-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-UUN-T is usually 5 days.
3.What payment methods are accepted for AT25XE041B-UUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE041B-UUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE041B-UUN-T?
AT25XE041B-UUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE041B-UUN-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-UUN-T?
For technical support, including AT25XE041B-UUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE041B-UUN-T requirements.
6.How does Aetrix verify that AT25XE041B-UUN-T is sourced from the original manufacturer or authorized distributors?
All AT25XE041B-UUN-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-UUN-T meets industry standards.
7.What is the process for return or replacement of AT25XE041B-UUN-T?
All AT25XE041B-UUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE041B-UUN-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-UUN-T part is unused and in its original packaging.
Return procedure for AT25XE041B-UUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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