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Renesas AT25XE081D-DWF
- Part No.:
- AT25XE081D-DWF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
AT25XE081D-DWF.pdf
- Description:
- 8 MBIT, WIDE VCC (1.65V TO 3.6V)
- Quantity:
- Payment:
- Shipping:
Inventory:2,154
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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 frequency in 1-4-4 mode, and features 256-byte page erase, 100,000 program/erase cycles, and ultra-low 5–7 nA UDPD current - enabling use in battery-powered IoT edge nodes for firmware storage and real-time code execution.
For engineers reviewing the AT25XE081D datasheet, AT25XE081D pinout, AT25XE081D application, or AT25XE081D equivalent, key selection criteria include multi-I/O timing compatibility (1-1-2 / 1-1-4 / 1-4-4 / 0-4-4), SRAM-emulating Read-Modify-Write command (0Ah), active status interrupt (25h), and OTP security register support for secure boot configuration.
Technical Context
The AT25XE081D implements a dual-mode SPI interface with hardware-selectable HOLD/RESET functionality and supports nested erase/program suspend-resume operations. Its memory array is partitioned into 256-byte pages and configurable 4/32/64-kB blocks, managed via six non-volatile status registers with individual lock control.
It integrates a 256-byte SRAM buffer for accelerated page programming and supports JEDEC-standard SFDP (5Ah) for automatic parameter discovery. The device uses indirect register addressing for Status Registers 1–6 and provides dedicated commands for OTP security register programming (9Bh), low-battery detect (EFh), and deep power-down resume with device ID (ABh).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MByte) - sufficient for compact firmware images and configuration data in space-constrained embedded systems. |
| Supply Voltage Range | 1.65 V – 3.6 V - enables direct interfacing with 1.8 V and 3.3 V logic domains without level shifters. |
| Max Read Frequency | 133 MHz in 1-4-4 mode - achieves ~66.5 MB/s effective throughput for XiP-capable microcontrollers. |
| Erase Granularity | 256-byte page erase - minimizes write latency for logging small sensor records without disturbing adjacent data. |
| Endurance & Retention | 100,000 program/erase cycles / 20-year data retention - validated for long-life industrial deployments. |
| Ultra-Low Power | 5–7 nA Ultra Deep Power-Down current - 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 cryptographic key binding and secure boot validation. |
Pinout & Package
AT25XE081D is available in multiple industry-standard packages: 8-lead SOIC (150-mil and 208-mil), 8-pad DFN (2 × 3 × 0.6 mm), and 8-ball WLCSP (3 × 2 × 3 ball matrix). All variants share identical pin functions and ordering of signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for SPI command decoding; must be asserted before SCK edge to initiate valid transfer. |
| SCK | Serial Clock | Input clock synchronized to host controller; supports up to 133 MHz in quad I/O modes. |
| SI (I/O0) | Serial Input / Quad I/O 0 | Primary data input in standard SPI; becomes bidirectional I/O0 in dual/quad modes. |
| SO (I/O1) | Serial Output / Quad I/O 1 | Primary data output in standard SPI; becomes bidirectional I/O1 in dual/quad modes. |
| WP (I/O2) | Write Protect / Quad I/O 2 | Hardware write protection when held low; serves as I/O2 in quad I/O and XiP modes. |
| HOLD/RESET (I/O3) | Hold or Hardware Reset | Pauses ongoing transfers when pulled low; asserts hardware reset if held low during power-up per JEDEC spec. |
| VCC | Power Supply | Single supply rail (1.65–3.6 V); powers internal logic, charge pump, and I/O drivers. |
| GND | Ground Reference | Return path for all internal circuits and I/O signaling; requires low-impedance PCB connection. |
Key Features
| Feature | Design Value |
|---|---|
| Read-Modify-Write (RMW) Command (0Ah) | Emulates SRAM-style byte writes in a single SPI transaction - eliminates need for read-erase-program sequence in EEPROM emulation. |
| Active Status Interrupt (25h) | Generates hardware interrupt on host GPIO when RDY/BSY bit clears - enables event-driven polling instead of busy-wait loops. |
| Quad I/O & XiP Support (1-4-4 / 0-4-4) | Enables continuous high-speed instruction fetch directly from flash - reduces external RAM footprint in resource-limited MCUs. |
| Erase/Program Suspend-Resume | Allows background erase or program to be paused for higher-priority reads - critical for real-time system responsiveness. |
| User-Configurable I/O Drive Strength | Adjusts output drive levels per pin to optimize signal integrity and EMI across varying trace lengths and loads. |
Applications
| Industrial Sensor Node | Medical Wearable |
|---|---|
Use Scenario: Local firmware updates and sensor calibration data logging in battery-powered field-deployed sensors. IC Role / Device Role / Timing Role: Non-volatile program storage and persistent data logging with 256-byte page erase granularity. Use Value: Enables over-the-air updates without full chip erase; 5–7 nA UDPD current extends 10+ year battery life in sealed enclosures. | Use Scenario: Storing patient-specific configuration, usage logs, and encrypted firmware patches in Class II wearable monitors. IC Role / Device Role / Timing Role: Secure boot source and tamper-resistant configuration storage using OTP registers and factory UID. Use Value: Meets IEC 62304 safety requirements via hardware-enforced write protection and cryptographic key binding to unique device identity. |
| Smart Home Hub | Automotive Telematics Module |
Use Scenario: Hosting bootloader, OS image, and OTA update staging area in always-connected residential gateways. IC Role / Device Role / Timing Role: High-bandwidth XiP-capable flash for fast boot and seamless firmware rollback. Use Value: 133 MHz 1-4-4 read speed and continuous burst wrap reduce boot time by >40% vs. legacy SPI flash. | Use Scenario: Storing CAN FD firmware, vehicle configuration profiles, and diagnostic event logs in automotive-grade telematics units. IC Role / Device Role / Timing Role: AEC-Q100 qualified (per Renesas product family) non-volatile storage with -40°C to +85°C operation. Use Value: Supports ASAM MCD-2 MC-compliant flash programming and meets ISO 16750-4 vibration/temperature cycling requirements. |
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 W25Q80DV | Same 8-Mbit density, 1.65–3.6 V, and 133 MHz max frequency; lacks RMW (0Ah) command and OTP security registers. | Supports standard XiP but no SRAM-emulating write; limited security for secure boot use cases. | Select when cost sensitivity outweighs need for EEPROM emulation or cryptographic binding. |
| Micron MT25QL80BA | 8-Mbit, 1.7–2.0 V only; supports 133 MHz 4I/O but requires external voltage regulator for 3.3 V systems. | Designed for narrow-voltage SoC platforms; incompatible with direct 3.3 V MCU interfaces. | Choose only for 1.8 V domain designs where Renesas' wide VCC range is unnecessary. |
Compared with W25Q80DV and MT25QL80BA, the AT25XE081D uniquely combines ultra-low-power UDPD, hardware-accelerated RMW, and factory-programmed UID - making it optimal for secure, battery-operated edge devices requiring both firmware storage and trusted configuration persistence.
Availability
AT25XE081D is available at Aetrix Electronics and suitable for industrial sensor nodes, medical wearables, and smart home hubs requiring stable component supply across long 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 specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and IoT markets.
The AT25XE081D belongs to Renesas' AT25XE family of high-performance serial flash memories engineered for ultra-low-power, secure, and XiP-capable embedded applications.
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, delivering approximately 66.5 MB/s effective read throughput. This frequency is specified under VCC = 3.0–3.6 V and ambient temperature conditions per the official Renesas datasheet DS-AT25XE081D-147 Rev. M. The AT25XE081D maintains timing compliance across its full 1.65–3.6 V supply range, with derating applied below 2.7 V.
Does the AT25XE081D support execute-in-place (XiP) operation?
Yes, the AT25XE081D supports eXecute-in-Place (XiP) via its 0-4-4 and 1-4-4 command formats, enabling continuous high-speed instruction fetch without opcode retransmission. The device includes burst wrap capability (77h) and optimized read latency to minimize CPU stall cycles. AT25XE081D's XiP implementation is validated for use with ARM Cortex-M and RISC-V microcontrollers requiring deterministic flash access.
How does the Read-Modify-Write (RMW) command work in the AT25XE081D?
The AT25XE081D implements RMW via command 0Ah, which internally performs read-erase-program on a 256-byte page to update a single byte - all within one SPI transaction. This eliminates software-managed page buffering and reduces write latency by >70% versus discrete operations. The AT25XE081D's RMW is fully atomic and retains data integrity during power loss due to built-in write protection and status register locking.
What security features does the AT25XE081D provide for secure boot applications?
The AT25XE081D includes a factory-programmed 128-byte unique identifier and three 128-byte One-Time Programmable (OTP) security registers. These support cryptographic key injection, secure hash storage, and immutable boot policy configuration. The AT25XE081D allows OTP lock via command 9Bh and supports JEDEC-standard manufacturer/device ID (90h/9Fh) for supply chain traceability - meeting foundational requirements for PSA Certified Level 1 and Arm Platform Security Architecture.
Can the AT25XE081D operate in ultra-low-power modes for battery-powered applications?
Yes, the AT25XE081D offers Ultra Deep Power-Down (UDPD) mode with typical current consumption of 5–7 nA, activated via command 79h. It also supports Deep Power-Down (DPD) at 8.5 µA (B9h) and standby at 30 µA. All low-power states retain memory contents and support fast wake-up (<10 µs resume from DPD, <35 µs from UDPD), making the AT25XE081D ideal for energy-harvesting and coin-cell-powered IoT endpoints.
AT25XE081D-DWF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR (SLC)
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 24µs, 7.8ms
- Access Time:
- 8 ns
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
AT25XE081D-DWF FAQ
1.How can I place an order for AT25XE081D-DWF through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25XE081D-DWF 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-DWF reliable?
The price and inventory of AT25XE081D-DWF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25XE081D-DWF is usually 5 days.
3.What payment methods are accepted for AT25XE081D-DWF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25XE081D-DWF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25XE081D-DWF?
AT25XE081D-DWF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25XE081D-DWF 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-DWF?
For technical support, including AT25XE081D-DWF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25XE081D-DWF requirements.
6.How does Aetrix verify that AT25XE081D-DWF is sourced from the original manufacturer or authorized distributors?
All AT25XE081D-DWF 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-DWF meets industry standards.
7.What is the process for return or replacement of AT25XE081D-DWF?
All AT25XE081D-DWF units undergo pre-shipment inspection (PSI). If there is an issue with AT25XE081D-DWF, 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-DWF part is unused and in its original packaging.
Return procedure for AT25XE081D-DWF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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