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Renesas AT25XE081D-SHN-T
- Part No.:
- AT25XE081D-SHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT25XE081D-SHN-T.pdf
- Description:
- IC FLASH 8MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:24,109
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Product details
Overview
AT25XE081D from Renesas Electronics is an 8-Mbit SPI serial flash memory IC supporting quad I/O, XiP (eXecute-in-Place), and flexible erase architecture. It operates from 1.65 V to 3.6 V, delivers up to 133 MHz read speed in 1-4-4 mode, and features 256-byte page erase, 100,000 program/erase cycles, and ultra-low 5–7 nA UDPD current - ideal for battery-powered IoT edge nodes and firmware storage in resource-constrained microcontrollers.
For engineers reviewing the AT25XE081D datasheet, AT25XE081D pinout, AT25XE081D application, or AT25XE081D equivalent, this page provides verified electrical specs, validated multi-I/O timing behavior, confirmed XiP and RMW command support, package-specific pin mapping, and real-world use cases in embedded boot code storage and secure firmware update systems.
Technical Context
The AT25XE081D implements a dual-mode SPI interface with hardware-selectable HOLD/RESET functionality and supports five transfer protocols: standard SPI (1-1-1), dual output (1-1-2), quad output (1-1-4), quad I/O (1-4-4), and XiP (0-4-4). Its internal architecture integrates an 8-Mbit Flash array, 256-byte SRAM buffer, and I/O Interface Unit that dynamically adapts signal routing based on active command mode.
It includes six non-volatile status registers with individual lock bits, JEDEC-standard SFDP for auto-configuration, and nested erase/program suspend/resume capability enabling concurrent background operations. The device uses a 1.65–3.6 V supply with user-configurable I/O drive strength and supports both software reset (99h) and JEDEC hardware reset (via dedicated pin).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MByte) - sufficient for full MCU boot images or dual-firmware partitioning in space-constrained designs. |
| Supply Voltage Range | 1.65 V – 3.6 V - enables direct integration with 1.8 V and 3.3 V logic domains without level-shifting. |
| Max Read Frequency | 133 MHz in 1-4-4 mode - achieves ~66.5 MB/s effective throughput for high-speed XiP execution. |
| Erase Granularity | 256-byte page erase - minimizes write latency for logging small sensor data packets without disturbing adjacent sectors. |
| Endurance & Retention | 100,000 program/erase cycles / 20-year data retention - validated for industrial-grade firmware update durability. |
| Ultra-Low Power Modes | 5–7 nA Ultra Deep Power-Down (UDPD) - extends battery life in always-on sensor nodes during extended sleep intervals. |
| Security Features | 3 × 128-byte OTP security registers + factory-programmed 128-byte UID - supports secure key binding and device identity attestation. |
Pinout & Package
AT25XE081D is available in multiple industry-standard packages including 8-lead SOIC (150-mil), 8-lead SOIC (208-mil), 8-pad DFN (2 × 3 × 0.6 mm), and 8-ball WLCSP (3 × 2 × 3 ball matrix). Pin functions are identical across all packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; must be held low for entire transaction duration. |
| SCK | Serial Clock | Master-generated clock driving all SPI transfers; supports up to 133 MHz in quad I/O mode. |
| SI (I/O0) | Serial Input / Quad I/O 0 | Primary data input in standard/dual modes; bidirectional in quad I/O/XiP for command/address/data multiplexing. |
| SO (I/O1) | Serial Output / Quad I/O 1 | Primary data output in standard/dual modes; bidirectional in quad I/O/XiP for high-speed read bursts. |
| WP (I/O2) | Write Protect / Quad I/O 2 | Hardware write protection when asserted low; also serves as bidirectional I/O line in quad modes. |
| HOLD/RESET (I/O3) | Hold Input or Hardware Reset | Pauses ongoing SPI transfers when pulled low; alternatively triggers JEDEC-compliant hardware reset if configured. |
| VCC | Power Supply | 1.65–3.6 V core and I/O supply; decoupling required per datasheet layout guidelines. |
| GND | Ground | Reference return path for all digital and analog circuitry; separate ground plane recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Read-Modify-Write (RMW) Command | Emulates SRAM-style byte writes in a single 0Ah command - eliminates need for read-erase-program sequences in EEPROM emulation. |
| Active Status Interrupt | Automatically asserts interrupt to host CPU when RDY/BSY bit clears - enables event-driven polling instead of busy-wait loops. |
| Flexible Block Protection | Supports individual block locking plus user-definable protected zones at memory start/end - prevents accidental overwrite of bootloader or calibration data. |
| Sequential Program Mode | Enables continuous multi-page programming via ADh/AFh commands - reduces overhead for bulk firmware updates. |
| Quad I/O and XiP Support | 1-4-4 and 0-4-4 modes eliminate opcode transmission after initial setup - critical for deterministic low-latency instruction fetch in real-time applications. |
Applications
| Industrial PLC Firmware Storage | IoT Edge Sensor Node Logging |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Non-volatile program memory holding executable code copied to RAM at boot or executed directly via XiP mode. Use Value: 256-byte page erase enables fast patch updates without erasing full 64-kB blocks; 1.65–3.6 V operation supports wide-input power supplies common in industrial 24 V DC systems. | Use Scenario: Local timestamped storage of temperature, humidity, and motion sensor readings in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Data logging memory with frequent small-write operations using RMW and page program commands. Use Value: 5–7 nA UDPD current extends 10-year battery life; OTP registers store unique device identifiers for cloud-based asset tracking. |
| Secure MCU Bootloader Storage | Medical Wearable Firmware Vault |
Use Scenario: Hosting cryptographically signed bootloader images in wearable health monitors requiring secure boot validation. IC Role / Device Role / Timing Role: Trusted firmware vault with factory-programmed UID and OTP registers for key binding and anti-cloning. Use Value: 128-byte factory UID + three 128-byte OTP registers enable secure key derivation and immutable device identity - meeting IEC 62304 Class B requirements. | Use Scenario: Storing calibrated sensor coefficients and regulatory-compliant firmware revisions in FDA-cleared wearable ECG devices. IC Role / Device Role / Timing Role: High-reliability configuration memory with 20-year data retention and 100,000-cycle endurance for lifetime device service. Use Value: Individual block protection prevents accidental corruption of calibration data; -40°C to +85°C rating ensures operation inside body-worn enclosures under varying ambient conditions. |
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 W25Q80DVSSIG | 8-Mbit density, 1.65–3.6 V, 104 MHz max clock, no UDPD mode (min 1 µA DPD), no RMW command | Lacks ultra-deep power-down and SRAM-emulation write - unsuitable for sub-µA sleep-critical IoT nodes | Choose for cost-sensitive consumer applications where UDPD and RMW are not required. |
| Macronix MX25L8006EM2I-12G | 8-Mbit density, 2.7–3.6 V only, 80 MHz max clock, supports DPD but not UDPD, no XiP continuous read mode | Narrower voltage range excludes 1.8 V SoC integration; lower frequency limits XiP performance in real-time control loops | Prefer for legacy 3.3 V-only industrial systems where ultra-low power and XiP are secondary concerns. |
Compared with W25Q80DVSSIG and MX25L8006EM2I-12G, the AT25XE081D uniquely combines ultra-low 5–7 nA UDPD, 133 MHz quad I/O, and single-command RMW - making it the only option for battery-powered edge devices requiring both long-term firmware integrity and sub-second firmware patching latency.
Availability
AT25XE081D is available at Aetrix Electronics and suitable for industrial PLC firmware storage, IoT edge sensor node logging, and secure MCU bootloader storage requiring stable component supply across multi-year production lifecycles.
Supply support for AT25XE081D 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, and IoT markets.
The AT25XE081D belongs to Renesas' AT25XE family of high-performance serial flash memories engineered for ultra-low-power, secure, and high-speed code execution in next-generation embedded systems.
FAQ
What is the maximum operating frequency of the AT25XE081D in quad I/O mode?
The AT25XE081D supports up to 133 MHz in 1-4-4 quad I/O mode, enabling ~66.5 MB/s effective read throughput. This frequency is validated across the full 1.65–3.6 V supply range and -40°C to +85°C temperature range. The device maintains timing compliance with JEDEC-standard AC characteristics, including setup/hold margins for all I/O lines during high-speed bursts.
Does the AT25XE081D support true eXecute-in-Place (XiP) operation?
Yes, the AT25XE081D supports XiP via its 0-4-4 command format, which eliminates repeated opcode transmission after initial setup. This allows continuous instruction fetch directly from flash without intermediate buffering - reducing latency and simplifying memory mapping in Cortex-M and RISC-V microcontrollers with external memory interfaces.
How does the Read-Modify-Write (RMW) command in the AT25XE081D differ from standard page programming?
The AT25XE081D's 0Ah RMW command performs atomic byte-level updates within a page without requiring separate read-erase-program steps. Unlike standard page programming, RMW internally manages sector alignment and partial-page writes - enabling true EEPROM-like behavior for configuration registers and runtime variables while preserving full 100,000-cycle endurance.
What power-saving modes does the AT25XE081D offer, and what are their typical current draws?
The AT25XE081D offers three low-power states: standby (30 µA typical), Deep Power-Down (DPD, 8.5 µA typical), and Ultra Deep Power-Down (UDPD, 5–7 nA typical). UDPD retains full memory content and register state while drawing nanoampere current - ideal for battery-backed systems requiring decade-long shelf life without refresh.
Can the AT25XE081D be used with 1.8 V microcontrollers without level shifters?
Yes, the AT25XE081D operates natively from 1.65 V to 3.6 V, making it fully compatible with 1.8 V logic families. Its I/O pins are 1.65 V–3.6 V tolerant, and drive strength is software-configurable to match host MCU slew rate requirements - eliminating external level shifters in most 1.8 V embedded designs.
AT25XE081D-SHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 4ms, 30ms
- 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-SOIC
AT25XE081D-SHN-T FAQ
1.How can I place an order for AT25XE081D-SHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE081D-SHN-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 AT25XE081D-SHN-T reliable?
The price and inventory of AT25XE081D-SHN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25XE081D-SHN-T is usually 5 days.
3.What payment methods are accepted for AT25XE081D-SHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE081D-SHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE081D-SHN-T?
AT25XE081D-SHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE081D-SHN-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 AT25XE081D-SHN-T?
For technical support, including AT25XE081D-SHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE081D-SHN-T requirements.
6.How does Aetrix verify that AT25XE081D-SHN-T is sourced from the original manufacturer or authorized distributors?
All AT25XE081D-SHN-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 AT25XE081D-SHN-T meets industry standards.
7.What is the process for return or replacement of AT25XE081D-SHN-T?
All AT25XE081D-SHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE081D-SHN-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 AT25XE081D-SHN-T part is unused and in its original packaging.
Return procedure for AT25XE081D-SHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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