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Renesas AT25XE041B-SSHNHR-T
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- Part No.:
- AT25XE041B-SSHNHR-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25XE041B-SSHNHR-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,734
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Product details
Overview
AT25XE041B-SSHNHR-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, and industrial temperature range (–40°C to +125°C). It delivers 6 ns clock-to-output timing, 256-byte page erase, and 128-byte OTP security register with factory-programmed unique ID - used for firmware storage and secure boot in embedded controllers.
For engineers reviewing the AT25XE041B-SSHNHR-T datasheet, AT25XE041B-SSHNHR-T pinout, AT25XE041B-SSHNHR-T application, or AT25XE041B-SSHNHR-T equivalent, key selection criteria include Dual-I/O read throughput, ultra-deep power-down current (200 nA), flexible erase granularity (256 B / 4/32/64 kB blocks), hardware write protection via WP pin, and JEDEC-compliant manufacturer/device ID access.
Technical Context
The AT25XE041B-SSHNHR-T implements an SPI-compatible interface supporting Modes 0 and 3, with dedicated Dual-Output Read (0BH) and Dual-Input Program commands enabling 2-bit-per-clock data transfer. Its memory array is partitioned into uniform 4-kByte, 32-kByte, and 64-kByte erase blocks plus 256-Byte pages, optimized for mixed code+data storage without over-erasure waste.
It integrates dual protection mechanisms: software-controlled sector locking via Status Register bits and hardware-controlled locking via the active-low WP pin. The 128-byte OTP security register contains 64 bytes factory-programmed with a unique identifier and 64 bytes user-programmable - accessible only through dedicated security commands, not standard read/write.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KByte) - sufficient for firmware images, configuration tables, and logging buffers in resource-constrained microcontrollers. |
| Interface | SPI with Dual-I/O support - doubles read bandwidth vs. standard SPI; compatible with legacy SPI controllers via Mode 0/3. |
| Max Clock Frequency | 85 MHz - enables fast code shadowing and high-throughput data logging at up to ~170 MB/s effective Dual-I/O read rate. |
| Erase Granularity | 256-Byte page, 4/32/64-kByte uniform blocks, full chip - allows precise updates of small firmware patches without disturbing adjacent code or data. |
| 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 - ensures long-term reliability for industrial control firmware and calibration data storage. |
| Endurance | 100,000 P/E cycles (–40°C to +85°C); 20,000 cycles (–40°C to +125°C) - supports frequent field-upgrade scenarios in automotive and industrial environments. |
Pinout & Package
AT25XE041B-SSHNHR-T is packaged in an 8-lead SOIC (150-mil) surface-mount package, measuring 5.0 × 4.0 × 1.5 mm, RoHS-compliant and halide-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; rising edge ends operations, falling edge initiates command sequences - required for multi-device SPI bus arbitration. |
| SCK | Serial Clock | Master-generated clock; data latched on rising edge (SI), output shifted on falling edge (SO) - defines timing for all SPI transactions. |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Primary command/address/data input; becomes I/O0 during Dual-I/O reads - enables 2-bit parallel output with SO (I/O1). |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Standard output during single-I/O reads; becomes I/O1 during Dual-I/O reads - pairs with SI to deliver two bits per SCK falling edge. |
| WP | Write Protect | Hardware lock control; low state prevents status register writes and sector protection changes - provides tamper-resistant firmware update gating. |
| HOLD | Hold Control | Pauses ongoing SPI transfers without deselecting device or resetting internal state - useful for interrupt-driven host systems needing non-disruptive bus suspension. |
| VCC | Power Supply | 1.65–3.6 V single supply - eliminates need for charge pumps or auxiliary voltage rails; supports direct connection to 1.8 V or 3.3 V system rails. |
| GND | Ground Reference | Common return path for all digital and analog circuitry - must be low-impedance and decoupled locally with 100 nF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Operation | Enables 2-bit-per-clock data output using SI and SO pins simultaneously - doubles effective read bandwidth without increasing clock frequency or requiring additional pins. |
| Flexible Erase Architecture | Supports 256-Byte page, 4/32/64-kByte block, and full-chip erase - minimizes wasted space when updating partial firmware modules or logging segments. |
| 128-Byte OTP Security Register | Contains 64-byte factory-unique ID + 64-byte user-programmable area - provides immutable device identity and secure key storage for cryptographic boot validation. |
| Ultra-Deep Power-Down Mode | Reduces current to 200 nA typical - critical for battery-powered sensors and wearables requiring multi-year shelf life and ultra-low standby power. |
| Hardware Write Protection (WP Pin) | Physically disables write/erase commands when asserted - adds fail-safe layer against accidental or malicious firmware corruption during field operation. |
Applications
| Firmware Storage in MCU-Based Edge Nodes | Secure Boot Configuration Storage |
|---|---|
Use Scenario: Storing bootloader and application firmware for ARM Cortex-M microcontrollers in smart metering and industrial gateways. IC Role / Device Role / Timing Role: Non-volatile code storage with fast 85 MHz Dual-I/O read for rapid shadowing into SRAM; supports in-field OTA updates via page-level erasure. Use Value: Eliminates need for external EEPROM or larger NOR flash; 256-byte page erase enables atomic patch updates without corrupting adjacent firmware sections. | Use Scenario: Holding cryptographic keys, root-of-trust certificates, and secure boot policy flags in automotive body control modules. IC Role / Device Role / Timing Role: OTP-secured storage for immutable identifiers and user-programmable keys; accessed only via dedicated security commands to prevent runtime exposure. Use Value: Prevents cloning and unauthorized firmware loading; factory-programmed 64-byte UID enables device-specific key derivation and license binding. |
| Data Logging in Battery-Powered Sensors | Firmware + Parameter Storage in Medical Devices |
Use Scenario: Capturing sensor readings (temperature, humidity, motion) in portable environmental monitors with multi-month battery life. IC Role / Device Role / Timing Role: Low-power non-volatile buffer with 200 nA ultra-deep power-down mode; 4-kByte block erase aligns with daily log rotation intervals. Use Value: Extends operational lifetime by minimizing quiescent current during idle periods while retaining granular erase control for efficient log management. | Use Scenario: Storing FDA-compliant firmware revisions and calibrated sensor parameters in handheld diagnostic tools. IC Role / Device Role / Timing Role: Dual-function memory holding both executable code and field-adjustable calibration data; hardware WP pin prevents accidental parameter overwrite during service. Use Value: Ensures regulatory traceability via 20-year data retention and supports safe, auditable field recalibration without risking firmware integrity. |
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, 1.7–2.0 V supply range only; no Ultra-Deep Power-Down mode (min 1 µA); lacks OTP security register. | Targeted at cost-sensitive consumer electronics where extended temperature and ultra-low power are not required. | Select when operating exclusively at 1.8 V and security/low-power features are secondary. |
| Micron MT25QL04A | 4 Mbit density, supports Quad-I/O (not Dual-I/O only); deeper power-down (1 µA), no factory-programmed UID in OTP register. | Preferred for high-speed boot from QSPI interfaces; requires different command set and pin mapping for Quad mode. | Select when migrating to QSPI-capable SoCs and higher bandwidth is prioritized over OTP-based device identity. |
Compared with W25Q40EW and MT25QL04A, the AT25XE041B-SSHNHR-T uniquely combines ultra-deep power-down (200 nA), factory-programmed UID, and Dual-I/O operation within a 1.65–3.6 V supply range - making it optimal for battery-powered, secure, and voltage-flexible embedded designs.
Availability
AT25XE041B-SSHNHR-T is available at Aetrix Electronics and suitable for firmware storage in MCU-based edge nodes, secure boot configuration storage, and data logging in battery-powered sensors requiring stable component supply across industrial and automotive production lifecycles.
Supply support for AT25XE041B-SSHNHR-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 for high-reliability, low-voltage, and secure embedded storage - specifically targeting code+data co-location in space- and power-constrained systems.
FAQ
What is the maximum operating frequency supported by the AT25XE041B-SSHNHR-T?
The AT25XE041B-SSHNHR-T supports a maximum operating frequency of 85 MHz. This enables high-speed Dual-I/O read operations with a clock-to-output delay of just 6 ns, allowing rapid firmware shadowing and efficient data streaming in performance-critical embedded applications. The 85 MHz rating applies across the full industrial temperature range (–40°C to +125°C) under valid supply conditions (1.65–3.6 V).
Does the AT25XE041B-SSHNHR-T support hardware write protection?
Yes, the AT25XE041B-SSHNHR-T supports hardware write protection via its dedicated active-low WP (Write Protect) pin. When WP is driven low, it prevents modification of the Status Register and locks protected sectors - providing a physical, tamper-resistant safeguard against accidental or malicious firmware corruption. The WP pin is internally pulled-high and may be left floating if unused, though external connection to VCC is recommended.
What erase block sizes does the AT25XE041B-SSHNHR-T support?
The AT25XE041B-SSHNHR-T supports five erase granularities: 256-byte page erase, uniform 4-kByte block erase, uniform 32-kByte block erase, uniform 64-kByte block erase, and full chip erase. This flexible architecture minimizes wasted memory space during partial firmware updates or data logging - especially valuable in systems where code modules and data segments must reside in isolated erase regions.
How is the OTP security register structured in the AT25XE041B-SSHNHR-T?
The AT25XE041B-SSHNHR-T includes a 128-byte One-Time Programmable (OTP) security register: 64 bytes are factory-programmed with a unique device identifier (UID), and 64 bytes are user-programmable for keys, certificates, or calibration data. Access requires dedicated security commands (02h/04h), and once programmed, OTP bytes cannot be altered - ensuring cryptographic integrity and device authenticity in secure boot implementations.
What power-saving modes does the AT25XE041B-SSHNHR-T offer?
The AT25XE041B-SSHNHR-T offers two ultra-low-power states: Deep Power-Down (4.5 µA typical) and Ultra-Deep Power-Down (200 nA typical). Both are entered via dedicated commands (B9h and 79h, respectively) and exited with CS toggling or reset. These modes significantly extend battery life in always-on IoT sensors and portable medical devices, with Ultra-Deep Power-Down enabling multi-year shelf life without compromising fast wake-up capability.
AT25XE041B-SSHNHR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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, 2.75ms
- 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-SOIC
AT25XE041B-SSHNHR-T FAQ
1.How can I place an order for AT25XE041B-SSHNHR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE041B-SSHNHR-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-SSHNHR-T reliable?
The price and inventory of AT25XE041B-SSHNHR-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-SSHNHR-T is usually 5 days.
3.What payment methods are accepted for AT25XE041B-SSHNHR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE041B-SSHNHR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE041B-SSHNHR-T?
AT25XE041B-SSHNHR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE041B-SSHNHR-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-SSHNHR-T?
For technical support, including AT25XE041B-SSHNHR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE041B-SSHNHR-T requirements.
6.How does Aetrix verify that AT25XE041B-SSHNHR-T is sourced from the original manufacturer or authorized distributors?
All AT25XE041B-SSHNHR-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-SSHNHR-T meets industry standards.
7.What is the process for return or replacement of AT25XE041B-SSHNHR-T?
All AT25XE041B-SSHNHR-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE041B-SSHNHR-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-SSHNHR-T part is unused and in its original packaging.
Return procedure for AT25XE041B-SSHNHR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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