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Renesas AT25XE041B-MAHN-T
- Part No.:
- AT25XE041B-MAHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25XE041B-MAHN-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:44,133
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Product details
Overview
AT25XE041B-MAHN-T from Renesas Electronics is a 4-Mbit SPI serial 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 +125°C, and flexible erase architecture (256-byte page, 4/32/64-kByte blocks, full chip). It serves as nonvolatile code and data storage in microcontroller-based embedded systems requiring fast read access and sector-level protection.
For engineers reviewing the AT25XE041B-MAHN-T datasheet, AT25XE041B-MAHN-T pinout, AT25XE041B-MAHN-T application, or AT25XE041B-MAHN-T equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in industrial control and IoT edge nodes, and two confirmed alternative serial Flash parts with documented functional and timing differences.
Technical Context
The AT25XE041B-MAHN-T implements an SPI-compatible interface supporting Modes 0 and 3, with dual-output read capability enabling 2-bit-per-clock data transfer. Its internal architecture includes a 4-Mbit (512 K × 8) memory array organized into uniform 4-kByte blocks (128 total), 32-kByte blocks (16), and 64-kByte blocks (8), plus 256-byte pages for fine-grained data updates.
It integrates hardware write protection via the WP pin, software-controlled sector locking, and a 128-byte OTP security register-64 bytes factory-programmed with a unique identifier and 64 bytes user-programmable-for secure device serialization and key storage. Power management includes Deep Power-Down (4.5 µA typical) and Ultra-Deep Power-Down (200 nA typical) modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 K × 8), directly replaceable for legacy 4-Mbit SPI Flash in boot code or firmware storage. |
| Max Clock Frequency | 85 MHz - enables ≤6 ns clock-to-output timing for high-throughput firmware reads in real-time systems. |
| Erase Granularity | 256-byte page, 4/32/64-kByte uniform blocks - supports mixed code+data layouts without over-erasing. |
| Supply Voltage Range | 1.65 V to 3.6 V - interoperable with 1.8 V and 3.3 V logic domains without level shifters. |
| Endurance & Retention | 100,000 P/E cycles at –40°C to +85°C; 20-year data retention - suitable for field-upgradable industrial firmware. |
| Power-Down Current | 200 nA ultra-deep power-down - critical for battery-powered IoT sensors requiring multi-year shelf life. |
| OTP Security Register | 128-byte one-time programmable register (64 B factory ID + 64 B user space) - enables secure device binding. |
Pinout & Package
AT25XE041B-MAHN-T uses an 8-pin SOIC (150-mil) package per ordering code suffix "-MAHN-T", with standard SPI pinout and dedicated WP/HOLD control inputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates command latching on high-to-low transition and terminates operations on low-to-high. |
| SCK | Serial Clock | Drives all SPI timing; commands/addresses latched on rising edge; data output on falling edge. |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Primary command/address/data input; becomes I/O0 during Dual-I/O reads for parallel bit streaming. |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Primary data output; remains I/O1 during Dual-I/O reads to deliver second bit per SCK cycle. |
| WP | Write Protect | Hardware lock for protected sectors; low-active; internally pulled high; optional external tie to VCC. |
| HOLD | Hold Control | Pauses ongoing SPI transfers without deselecting CS; low-active; internally pulled high. |
| VCC | Power Supply | Single 1.65–3.6 V supply; powers all logic and memory arrays; no auxiliary voltage required. |
| GND | Ground Reference | System ground return path; must be low-impedance for stable read/write margins and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Delivers 2× throughput vs standard SPI reads by outputting two bits per SCK falling edge. |
| Flexible Erase Architecture | Enables independent update of code modules and data logs without erasing unrelated memory regions. |
| Hardware + Software Protection | Combines WP pin locking with status-register-based sector protection for layered security. |
| Ultra-Low Deep Power-Down | 200 nA current draw extends battery life in always-on sensor nodes and wearable devices. |
| Factory-Programmed UID | 64-byte unique identifier pre-written at manufacture - eliminates need for post-production serialization. |
| JEDEC ID Compatibility | Supports standard manufacturer/device ID read (0x9F command) for automated BOM verification and tooling. |
Applications
| Firmware Boot Storage | Industrial Data Logger |
|---|---|
Use Scenario: Stores boot loader and application firmware for ARM Cortex-M microcontrollers in PLCs and motor drives. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast random-access read (≤6 ns tV) and reliable execution-in-place (XIP) support. Use Value: Enables deterministic boot timing and field firmware updates using 4-kByte block erase without disrupting adjacent code sections. |
Use Scenario: Captures sensor readings and event logs in remote environmental monitoring stations powered by coin cells. IC Role / Device Role / Timing Role: Low-power data archive with 256-byte page programming for incremental log writes. Use Value: 200 nA ultra-deep power-down extends 10-year battery life while retaining 20-year data integrity. |
| IoT Edge Node Configuration | Medical Device Parameter Storage |
Use Scenario: Holds calibrated sensor coefficients, network credentials, and device-specific configuration in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure parameter store leveraging 128-byte OTP register for immutable UID and encrypted keys. Use Value: Factory-programmed 64-byte UID prevents cloning; user-programmable 64-byte space stores AES keys without risk of overwrite. |
Use Scenario: Stores FDA-mandated calibration history, usage counters, and safety-critical settings in Class II medical instruments. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory with 100,000 P/E cycles and 20-year retention at +85°C. Use Value: Meets IEC 62304 software lifecycle requirements for permanent parameter logging without wear-out concerns. |
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 Dual-I/O mode and OTP register. | Higher speed read but no hardware-accelerated dual-bit streaming or factory UID for secure provisioning. | Choose when maximum read bandwidth is prioritized over secure serialization and low-power deep sleep. |
| Macronix MX25L4033F | 4-Mbit, 2.7–3.6 V only, 80 MHz max clock, no Ultra-Deep Power-Down (min 1 µA), no OTP register. | Not suitable for 1.8 V systems or battery-critical designs; missing UID and ultra-low-power state. | Acceptable only in 3.3 V industrial systems where cost is primary and advanced security/power features are unused. |
Compared with W25Q40EW and MX25L4033F, the AT25XE041B-MAHN-T uniquely combines Dual-I/O throughput, factory UID, and 200 nA deep power-down - making it optimal for secure, energy-constrained edge devices requiring both performance and long-term reliability.
Availability
AT25XE041B-MAHN-T is available at Aetrix Electronics and suitable for industrial control systems, IoT edge nodes, and medical instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT25XE041B-MAHN-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 microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT25XE041B belongs to Renesas' AT25XE serial Flash product line, engineered for high-reliability code and data storage in resource-constrained embedded systems operating across extended temperature ranges.
FAQ
What is the operating voltage range of the AT25XE041B-MAHN-T?
The AT25XE041B-MAHN-T operates from 1.65 V to 3.6 V across –40°C to +85°C, and from 1.7 V to 3.6 V across –40°C to +125°C. This wide supply range allows direct interfacing with both 1.8 V and 3.3 V microcontrollers without level-shifting circuitry, simplifying board design and reducing BOM count for the AT25XE041B-MAHN-T.
Does the AT25XE041B-MAHN-T support Dual-I/O read mode?
Yes, the AT25XE041B-MAHN-T supports Dual-I/O read mode using the 0BBh command, enabling two bits of data to be clocked out per SCK falling edge on SI (I/O0) and SO (I/O1). This doubles effective read throughput versus standard SPI mode, improving firmware load times in time-critical AT25XE041B-MAHN-T applications.
What erase block sizes does the AT25XE041B-MAHN-T support?
The AT25XE041B-MAHN-T supports five erase granularities: 256-byte page erase, and uniform 4-kByte, 32-kByte, 64-kByte, and full-chip erase. This flexibility allows precise updates of small data records or large firmware images without over-erasing adjacent memory, optimizing lifetime usage of the AT25XE041B-MAHN-T.
How is hardware write protection implemented on the AT25XE041B-MAHN-T?
Hardware write protection on the AT25XE041B-MAHN-T is controlled by the active-low WP pin, which locks protected sectors when asserted. The WP pin is internally pulled high and can be left floating if unused, though Renesas recommends tying it to VCC externally. This complements software-based sector protection for robust AT25XE041B-MAHN-T data integrity.
What is the purpose of the OTP security register in the AT25XE041B-MAHN-T?
The AT25XE041B-MAHN-T includes a 128-byte OTP security register: 64 bytes factory-programmed with a unique device identifier (UID), and 64 bytes user-programmable for keys or certificates. Once written, OTP contents cannot be altered - providing tamper-resistant device identity and secure credential storage essential for AT25XE041B-MAHN-T in certified systems.
AT25XE041B-MAHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UFDFN 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 (2x3)
AT25XE041B-MAHN-T FAQ
1.How can I place an order for AT25XE041B-MAHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE041B-MAHN-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-MAHN-T reliable?
The price and inventory of AT25XE041B-MAHN-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-MAHN-T is usually 5 days.
3.What payment methods are accepted for AT25XE041B-MAHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE041B-MAHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE041B-MAHN-T?
AT25XE041B-MAHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE041B-MAHN-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-MAHN-T?
For technical support, including AT25XE041B-MAHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE041B-MAHN-T requirements.
6.How does Aetrix verify that AT25XE041B-MAHN-T is sourced from the original manufacturer or authorized distributors?
All AT25XE041B-MAHN-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-MAHN-T meets industry standards.
7.What is the process for return or replacement of AT25XE041B-MAHN-T?
All AT25XE041B-MAHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE041B-MAHN-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-MAHN-T part is unused and in its original packaging.
Return procedure for AT25XE041B-MAHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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