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Renesas AT25XE041B-MHNHR-T
- Part No.:
- AT25XE041B-MHNHR-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25XE041B-MHNHR-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,152
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Product details
Overview
AT25XE041B-MHNHR-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 and secure boot in resource-constrained embedded systems.
For engineers reviewing the AT25XE041B-MHNHR-T datasheet, AT25XE041B-MHNHR-T pinout, AT25XE041B-MHNHR-T application, or AT25XE041B-MHNHR-T equivalent, key selection criteria include SPI Mode 0/3 compatibility, dual-output read timing (6 ns tV), ultra-deep power-down current (200 nA), 100,000 program/erase cycles, and support for sequential programming and status-interrupt polling in real-time firmware update workflows.
Technical Context
The AT25XE041B-MHNHR-T implements a standard SPI interface with configurable Dual-I/O read mode that doubles data throughput by outputting two bits per SCK falling edge. Its memory architecture supports four independent erase granularities - page (256 B), 4-kB block, 32-kB block, and 64-kB block - enabling efficient code/data partitioning without over-erasure.
Internal logic includes a dual-byte status register with active interrupt capability, hardware-controlled sector locking via WP pin, and software-managed OTP security register (64 B factory ID + 64 B user programmable). All operations - including deep power-down entry/resume and ultra-deep power-down - are executed via JEDEC-standard opcodes with no external voltage rails required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KBytes) - sufficient for full bootloader + application firmware in compact MCU-based designs. |
| Max Clock Frequency | 85 MHz - enables high-speed firmware reads and reduces boot time in real-time systems. |
| Read Latency (tV) | 6 ns - minimal clock-to-output delay ensures tight timing margins in high-frequency SPI master interfaces. |
| Erase Granularity | 256-byte page / 4-kB / 32-kB / 64-kB blocks - allows precise firmware patching and data logging without disturbing adjacent sectors. |
| Power-Down Current | 200 nA (ultra-deep) - extends battery life in always-on IoT endpoints and low-power sensor nodes. |
| Endurance | 100,000 program/erase cycles (–40°C to +85°C) - supports field firmware updates over multi-year product lifecycles. |
| Data Retention | 20 years - guarantees long-term integrity of stored calibration data, device identity, and configuration parameters. |
Pinout & Package
AT25XE041B-MHNHR-T is packaged in an 8-pin Ultra Thin DFN (2 mm × 3 mm × 0.6 mm) with wettable flank leads, optimized for automated optical inspection (AOI) and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition high→low to initiate command sequence and low→high to terminate - critical for multi-device SPI bus arbitration. |
| SCK | Serial Clock | Master-generated clock; rising edge latches SI input, falling edge clocks SO output - defines maximum SPI throughput and timing closure requirements. |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Command/address/data input pin; becomes I/O0 during Dual-I/O read to output LSB of dual-bit data stream - requires bidirectional driver support in host controller. |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Data output pin; remains I/O1 during Dual-I/O read to output MSB - paired with SI/I/O0 for 2× read bandwidth vs standard SPI. |
| WP | Write Protect | Hardware lock control; low assertion disables all write/erase commands - used for permanent protection of bootloader or security registers. |
| HOLD | Communication Pause | Active-low pause signal; suspends ongoing SPI transfer without resetting internal state - enables low-latency host interrupt handling during flash access. |
| VCC | Supply Voltage | 1.65–3.6 V single rail - eliminates need for charge pumps or auxiliary supplies, simplifying power design in 1.8 V/2.5 V/3.3 V systems. |
| GND | Ground Reference | System ground return path - must be low-impedance and co-located with VCC decoupling to suppress switching noise on SPI lines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Delivers 2× effective read bandwidth vs standard SPI, reducing firmware load time in boot-critical applications. |
| Flexible Erase Architecture | Enables independent code module and data segment erasure - avoids wasted space and improves memory utilization efficiency. |
| 128-byte OTP Security Register | Provides tamper-resistant storage for unique device identifiers, cryptographic keys, or calibration constants - essential for secure boot and anti-cloning. |
| Ultra-Deep Power-Down | Reduces quiescent current to 200 nA, extending operational lifetime in battery-powered edge devices between wake events. |
| Status Register Interrupt | Allows host MCU to poll completion status without continuous register reads - lowers CPU overhead during background erase/program operations. |
Applications
| Secure Bootloader Storage | Firmware Over-the-Air (FOTA) Updates |
|---|---|
Use Scenario: Storing immutable bootloader code in protected sectors of AT25XE041B-MHNHR-T to ensure system integrity at power-on reset. IC Role / Device Role / Timing Role: Non-volatile code storage with hardware write protection (WP pin) and OTP-secured signature verification keys. Use Value: Prevents unauthorized firmware modification and enables cryptographic validation before execution - meeting IEC 62443 and UL 2900 security requirements. | Use Scenario: Hosting dual-bank firmware images for atomic OTA updates in smart meters and industrial gateways. IC Role / Device Role / Timing Role: High-reliability dual-image storage with 256-byte page erase enabling incremental patching and rollback capability. Use Value: Eliminates risk of bricking during update failure; 100,000 endurance cycles support >10 years of field updates at quarterly intervals. |
| Calibration Data Logging | IoT Edge Sensor Configuration |
Use Scenario: Retaining factory-calibrated sensor coefficients and runtime compensation tables in medical diagnostic equipment. IC Role / Device Role / Timing Role: Low-power, long-retention data archive with 32-kB block erase for periodic recalibration cycles. Use Value: Ensures 20-year data integrity without refresh; ultra-deep power-down (200 nA) preserves battery life in portable handheld devices. | Use Scenario: Storing device-specific network credentials, TLS certificates, and sensor fusion parameters in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Secure, low-voltage configuration store with OTP register for device identity and encrypted key material. Use Value: Enables zero-touch provisioning and secure TLS handshake without external secure element - reducing BOM cost and footprint. |
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 W25Q40EWBYIG | 4 Mbit density, 1.7–1.95 V supply only; no ultra-deep power-down mode (min 1 µA); lacks OTP security register. | Targeted at cost-sensitive consumer electronics where extended battery life and secure identity are not required. | Select when operating exclusively at 1.8 V and security features are unnecessary - lower unit cost but reduced flexibility. |
| Micron MT25QL04AABH1ESE-0SIT | Same 4 Mbit density and 1.7–2.0 V/2.7–3.6 V dual-voltage support; includes Quad SPI and XIP mode; higher 133 MHz max clock. | Preferred for high-performance applications requiring execute-in-place (XIP) or quad-I/O bandwidth beyond Dual-I/O. | Choose when migrating to XIP-capable architectures or needing faster random-access reads - requires Quad-SPI host support. |
Compared with W25Q40EWBYIG and MT25QL04AABH1ESE-0SIT, the AT25XE041B-MHNHR-T uniquely balances ultra-low power (200 nA), integrated security (128-byte OTP), and broad voltage operation (1.65–3.6 V) in a compact 2×3 mm DFN - making it optimal for secure, battery-constrained edge devices where dual-I/O throughput suffices.
Availability
AT25XE041B-MHNHR-T is available at Aetrix Electronics and suitable for secure bootloader storage, firmware OTA updates, calibration data logging, and IoT edge sensor configuration requiring stable component supply across automotive, industrial, and medical product lifecycles.
Supply support for AT25XE041B-MHNHR-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 connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
The AT25XE041B-MHNHR-T belongs to Renesas' serial Flash memory product line, engineered specifically for secure, low-power, and flexible code/data storage in space- and energy-constrained embedded systems.
FAQ
What is the operating voltage range of the AT25XE041B-MHNHR-T?
The AT25XE041B-MHNHR-T operates from 1.65 V to 3.6 V across the full industrial temperature range (–40°C to +85°C), enabling direct integration into 1.8 V, 2.5 V, and 3.3 V systems without level shifters or auxiliary supplies. This wide voltage range supports brown-out resilience and mixed-voltage board designs while maintaining full functionality including Dual-I/O read and OTP programming.
Does the AT25XE041B-MHNHR-T support Quad SPI mode?
No, the AT25XE041B-MHNHR-T does not support Quad SPI. It supports standard SPI Modes 0 and 3, plus Dual-I/O read and Dual-I/O program operations using SI (I/O0) and SO (I/O1) pins. Quad SPI capability is absent per the official Renesas datasheet DS-AT25XE041B-062 - only Dual-I/O is implemented for enhanced bandwidth over standard single-I/O SPI.
How is hardware write protection implemented on the AT25XE041B-MHNHR-T?
Hardware write protection on the AT25XE041B-MHNHR-T is controlled by the WP (Write Protect) pin, which must be driven low to disable all program and erase commands. The pin is internally pulled high, so leaving it unconnected defaults to unprotected operation. For permanent protection of bootloader or security registers, tie WP to GND - this overrides software-based protection settings and prevents accidental or malicious writes even if the status register is modified.
What is the purpose of the 128-byte OTP security register in the AT25XE041B-MHNHR-T?
The 128-byte OTP security register in the AT25XE041B-MHNHR-T contains 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for secure keys, calibration data, or electronic serial numbers. Once written, OTP locations cannot be erased or rewritten - providing tamper-resistant storage essential for secure boot, device authentication, and regulatory compliance in medical and industrial applications.
Can the AT25XE041B-MHNHR-T operate at 125°C ambient temperature?
Yes, the AT25XE041B-MHNHR-T supports operation up to +125°C ambient temperature, but with derated specifications: supply voltage range narrows to 1.7–3.6 V, program/erase endurance reduces to 20,000 cycles, and certain AC timing parameters may vary. Full industrial-grade performance (100,000 cycles, 1.65 V min) applies only from –40°C to +85°C per the datasheet DS-AT25XE041B-062 Rev. I.
AT25XE041B-MHNHR-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 ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT25XE041B-MHNHR-T FAQ
1.How can I place an order for AT25XE041B-MHNHR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE041B-MHNHR-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-MHNHR-T reliable?
The price and inventory of AT25XE041B-MHNHR-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-MHNHR-T is usually 5 days.
3.What payment methods are accepted for AT25XE041B-MHNHR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE041B-MHNHR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE041B-MHNHR-T?
AT25XE041B-MHNHR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE041B-MHNHR-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-MHNHR-T?
For technical support, including AT25XE041B-MHNHR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE041B-MHNHR-T requirements.
6.How does Aetrix verify that AT25XE041B-MHNHR-T is sourced from the original manufacturer or authorized distributors?
All AT25XE041B-MHNHR-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-MHNHR-T meets industry standards.
7.What is the process for return or replacement of AT25XE041B-MHNHR-T?
All AT25XE041B-MHNHR-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE041B-MHNHR-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-MHNHR-T part is unused and in its original packaging.
Return procedure for AT25XE041B-MHNHR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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