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Renesas AT25EU0081A-SUN-T
- Part No.:
- AT25EU0081A-SUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT25EU0081A-SUN-T.pdf
- Description:
- IC FLASH 8MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,985
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Product details
Overview
AT25EU0081A-SUN-T from Renesas Electronics is an 8-Mbit ultra-low-energy serial NOR Flash memory IC designed for battery-powered IoT edge devices. It operates across 1.65 V–3.6 V, supports SPI modes 0/3, delivers up to 108 MHz read speed, and enables quad I/O (1,4,4) for high-throughput firmware storage in compact embedded systems.
For engineers reviewing the AT25EU0081A-SUN-T datasheet, AT25EU0081A-SUN-T pinout, AT25EU0081A-SUN-T application, or AT25EU0081A-SUN-T equivalent, this page provides verified technical context, real-world use cases, validated alternatives, and supply-ready procurement details - all grounded in Renesas' DS-AT25EU0081A-213 Rev. C specification.
Technical Context
The AT25EU0081A-SUN-T implements a flexible erase architecture with constant-time 8 ms typical erase durations across page (256 B), 4/32/64 kB block, and full-chip operations - independent of block size. Its dual/quad SPI interface uses configurable IO0–IO3 pins (SI/SO/WP/HOLD) under software control via Status Register 2's Quad Enable bit.
It integrates three 512-byte one-time-programmable (OTP) security registers, supports program/erase suspend/resume, and achieves 1.1 mA active read current and 100 nA deep power-down current - enabling energy-sensitive boot code and configuration storage in always-on sensor nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Mbit (1 MB) NOR Flash with uniform 256-byte page architecture |
| Supply Voltage | 1.65 V–3.6 V - enables direct interfacing with 1.8 V and 3.3 V microcontrollers without level shifters |
| Max Clock Frequency | 108 MHz - supports fast read throughput up to 54 MB/s in quad I/O mode (1,4,4) |
| Page Program Time | 2 ms typical - enables rapid field firmware updates with minimal system stall time |
| Erase Endurance | 10,000 program/erase cycles - suitable for applications requiring frequent over-the-air (OTA) patching |
| Data Retention | 20 years at +85 °C - ensures long-term reliability in industrial and automotive-adjacent deployments |
| Operating Temp | −40 °C to +85 °C - qualified for extended temperature range operation in uncontrolled environments |
Pinout & Package
AT25EU0081A-SUN-T is supplied in an 8-pad 2 mm × 3 mm × 0.6 mm UDFN package (RoHS-compliant, halide-free), optimized for space-constrained PCB layouts in wearables and sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; falling edge initiates command sequence; must be stable before SCK edge |
| SCK | Serial Clock | Input clock driving all SPI timing; data latched on rising edge, output shifted on falling edge |
| SI (IO0) | Serial Input / Quad I/O 0 | Primary input for commands/addresses/data; becomes bidirectional IO0 in dual/quad mode when QE=1 |
| SO (IO1) | Serial Output / Quad I/O 1 | Primary output for read data; becomes bidirectional IO1 in dual/quad mode when QE=1 |
| WP (IO2) | Write Protect / Quad I/O 2 | Hardware write protection when QE=0; functions as IO2 in quad mode when QE=1; internally pulled high |
| HOLD (IO3) | Hold / Quad I/O 3 | Pauses ongoing SPI transfer without resetting state; functions as IO3 in quad mode when QE=1; internally pulled high |
| VCC | Power Supply | 1.65–3.6 V core supply; requires local 100 nF–1 µF decoupling capacitor near package pins |
| GND | Ground | Reference return path for all signals and power; must connect directly to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Deep Power-Down | 100 nA typical current - extends battery life in multi-year sensor deployments |
| Flexible Erase Granularity | 256-byte page erase + 4/32/64 kB block erase - minimizes write latency for partial firmware updates |
| Quad SPI Command Set | Supports (1,4,4) Fast Read and Quad Page Program - doubles bandwidth vs. standard SPI at same clock rate |
| Security Register Protection | Three 512-byte OTP security registers with lock bits - enables secure key storage and device authentication |
| Software/Hardware Write Protection | Configurable top/bottom block protection via SRP0/SRP1 + WP pin assertion - prevents accidental firmware corruption |
Applications
| Wireless Sensor Node Firmware Storage | Industrial PLC Configuration Memory |
|---|---|
|
Use Scenario: Storing boot firmware and OTA update images in battery-powered environmental sensors operating for >5 years on coin-cell batteries. IC Role / Device Role / Timing Role: External NOR Flash providing XIP-capable code storage with 108 MHz quad-read access and 2 ms page programming. Use Value: 100 nA deep power-down current and 20-year data retention ensure firmware integrity and zero maintenance over product lifetime. |
Use Scenario: Holding runtime configuration, calibration tables, and safety-critical parameters in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Non-volatile configuration memory with hardware write protection (WP pin) and OTP security registers for tamper-resistant parameter storage. Use Value: 10,000-cycle endurance and −40 °C to +85 °C operation guarantee reliable parameter persistence across thermal cycling and electrical noise. |
| Smart Meter Boot Code Storage | Medical Wearable Data Logging |
|
Use Scenario: Hosting secure bootloader and metering application code in ANSI C12.22-compliant smart electricity meters with anti-tampering requirements. IC Role / Device Role / Timing Role: Trusted firmware storage with JEDEC ID, 128-bit unique serial number, and OTP-locked security registers for cryptographic key binding. Use Value: Three 512-byte OTP registers enable secure key provisioning during manufacturing, preventing post-deployment firmware spoofing. |
Use Scenario: Recording physiological sensor timestamps and event markers in FDA-classified wearable health monitors with strict low-power constraints. IC Role / Device Role / Timing Role: Low-energy data buffer supporting burst writes via page program and background erases with suspend/resume capability. Use Value: Program/erase suspend allows real-time sensor sampling to continue uninterrupted during flash maintenance operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q80DVSSIG | 8 Mbit, 133 MHz max clock, 3.3 V only (2.7–3.6 V), no deep power-down (1 µA standby), no OTP security registers | Lacks ultra-low-power DPD mode and hardware security features - unsuitable for battery-only edge nodes requiring >5-year runtime | Select W25Q80DVSSIG only if higher clock speed is critical and power budget allows >10× higher standby current. |
| Macronix MX25U8035FZUI | 8 Mbit, 104 MHz max clock, 1.65–3.6 V, 2 µA deep power-down (vs. 100 nA), no OTP security registers, different status register layout | Higher DPD current reduces battery life by ~20×; lacks dedicated security register locking - limits secure boot implementations | Choose MX25U8035FZUI only when legacy design compatibility with Macronix register mapping is required and security is handled externally. |
Compared with W25Q80DVSSIG and MX25U8035FZUI, AT25EU0081A-SUN-T uniquely delivers sub-100 nA deep power-down, integrated OTP security registers, and consistent 8 ms erase times - making it the only option qualified for decade-long, energy-constrained, and security-aware IoT deployments.
Availability
AT25EU0081A-SUN-T is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial PLCs, smart meters, and medical wearables requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT25EU0081A-SUN-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 AT25EU0081A-SUN-T belongs to Renesas' ultra-low-energy serial Flash family, engineered specifically for battery-powered edge devices where energy per bit and long-term data integrity are primary design constraints.
FAQ
What is the maximum operating frequency of the AT25EU0081A-SUN-T in quad SPI mode?
The AT25EU0081A-SUN-T supports a maximum operating frequency of 108 MHz in quad SPI mode (1,4,4). This enables sustained read throughput of up to 54 MB/s, verified in Renesas' DS-AT25EU0081A-213 Rev. C under 1.65–3.6 V supply conditions with proper AC timing compliance.
Does the AT25EU0081A-SUN-T support hardware write protection via the WP pin?
Yes, the AT25EU0081A-SUN-T supports hardware write protection using the WP pin when the Quad Enable (QE) bit in Status Register 2 is cleared to 0 and SRP0/SRP1 are set to 0/1. In this configuration, pulling WP low disables writes to status registers - a feature confirmed in Section 2.2 and Table 6 of the AT25EU0081A-SUN-T datasheet.
What package type is used for the AT25EU0081A-SUN-T?
The AT25EU0081A-SUN-T uses an 8-pad 2 mm × 3 mm × 0.6 mm UDFN package, as specified in Section 9.3 of the official datasheet (DS-AT25EU0081A-213 Rev. C). This green, halide-free, RoHS-compliant package is optimized for high-density PCB layouts in space-constrained IoT endpoints.
How many program/erase cycles does the AT25EU0081A-SUN-T guarantee?
The AT25EU0081A-SUN-T guarantees 10,000 program and erase cycles, as stated in the "Cycling Endurance/Data Retention" section of the datasheet. This endurance rating applies across all supported erase granularities - page (256 B), 4/32/64 kB blocks, and full chip - and is validated at −40 °C to +85 °C.
Can the AT25EU0081A-SUN-T execute code directly from flash (XIP)?
Yes, the AT25EU0081A-SUN-T supports execute-in-place (XIP) operation, as explicitly stated in the Product Overview (Section 1): "It can be used either for storing program code that is shadowed from Flash memory into embedded, or as external RAM for executing program code directly from the Nor Flash memory." Its 108 MHz quad-read capability enables practical XIP performance in resource-constrained MCUs.
AT25EU0081A-SUN-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:
- -
- 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:
- 100 MHz
- Write Cycle Time - Word, Page:
- 3ms, 3ms
- Access Time:
- 7 ns
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25EU0081A-SUN-T FAQ
1.How can I place an order for AT25EU0081A-SUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25EU0081A-SUN-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 AT25EU0081A-SUN-T reliable?
The price and inventory of AT25EU0081A-SUN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25EU0081A-SUN-T is usually 5 days.
3.What payment methods are accepted for AT25EU0081A-SUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25EU0081A-SUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25EU0081A-SUN-T?
AT25EU0081A-SUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25EU0081A-SUN-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 AT25EU0081A-SUN-T?
For technical support, including AT25EU0081A-SUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25EU0081A-SUN-T requirements.
6.How does Aetrix verify that AT25EU0081A-SUN-T is sourced from the original manufacturer or authorized distributors?
All AT25EU0081A-SUN-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 AT25EU0081A-SUN-T meets industry standards.
7.What is the process for return or replacement of AT25EU0081A-SUN-T?
All AT25EU0081A-SUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25EU0081A-SUN-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 AT25EU0081A-SUN-T part is unused and in its original packaging.
Return procedure for AT25EU0081A-SUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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