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Renesas AT25FF081A-UUN-T
- Part No.:
- AT25FF081A-UUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
AT25FF081A-UUN-T.pdf
- Description:
- IC FLASH 8MBIT SPI/QUAD 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,244
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Product details
Overview
AT25FF081A-UUN-T from Renesas Electronics is an 8-Mbit SPI serial flash memory IC supporting 1.65 V–3.6 V operation, quad I/O (1-4-4) and eXecute-in-Place (XiP), with 133 MHz max clock frequency and uniform 4/32/64-kB block erase. It serves as non-volatile program storage or direct code execution in resource-constrained embedded systems.
For engineers reviewing the AT25FF081A-UUN-T datasheet, AT25FF081A-UUN-T pinout, AT25FF081A-UUN-T application, or AT25FF081A-UUN-T equivalent, key selection criteria include XiP support, ultra-low deep power-down current (7 nA), JEDEC SFDP compliance, and flexible multi-I/O timing modes for high-speed boot or firmware update paths.
Technical Context
The AT25FF081A-UUN-T implements a dual-mode SPI interface with hardware-selectable HOLD/RESET functionality and supports standard (1-1-1), dual-output (1-1-2), quad-output (1-1-4), quad I/O (1-4-4), and XiP (0-4-4) transfer protocols. Its internal architecture integrates a 256-byte SRAM buffer and configurable status registers for precise memory protection control.
It features five non-volatile status registers with individual lock bits, OTP security registers (3 × 128 bytes), and factory-programmed unique ID (128 bytes). Erase/program suspend-resume capability enables concurrent background operations without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MByte) - sufficient for bootloader, firmware image, or configuration data in compact MCU-based designs. |
| Supply Voltage Range | 1.65 V to 3.6 V - enables direct integration with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Max Clock Frequency | 133 MHz (1-1-1 mode) - delivers up to 133 MB/s read throughput in standard SPI; higher effective bandwidth in quad modes. |
| Erase Granularity | Uniform 4-kB / 32-kB / 64-kB blocks + full chip - allows fine-grained firmware updates while preserving critical sections. |
| Power Consumption | 7 nA Ultra-Deep Power-Down current - extends battery life in always-on IoT edge nodes during extended sleep cycles. |
| Data Retention | 20 years at −40 °C to +85 °C - meets long-lifecycle requirements for industrial control and automotive infotainment modules. |
| Endurance | 100k program/erase cycles at −40 °C to +85 °C - supports frequent field firmware updates in connected devices. |
Pinout & Package
AT25FF081A-UUN-T is packaged in an 8-pad, 2 mm × 3 mm × 0.6 mm DFN (Dual Flat No-lead) package with wettable flanks, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; deassertion places device in standby (30 µA), not Deep Power-Down. |
| SCK | Serial Clock | Input clock for all SPI transfers; supports up to 133 MHz with configurable drive strength. |
| SI (I/O0) | Serial Input / Quad I/O Lane 0 | Primary data input in standard/dual modes; bidirectional in quad I/O/XiP modes. |
| SO (I/O1) | Serial Output / Quad I/O Lane 1 | Primary data output in standard/dual modes; bidirectional in quad I/O/XiP modes. |
| WP (I/O2) | Write Protect / Quad I/O Lane 2 | Hardware write protection when asserted low; also functions as I/O2 in quad modes. |
| HOLD/RESET (I/O3) | Hold or Hardware Reset | Pauses ongoing transfers when held low; performs JEDEC-standard reset when pulsed per spec. |
| VCC | Power Supply | 1.65–3.6 V core supply; decoupling required per layout guidelines for stable high-frequency operation. |
| GND | Ground | Reference return path for all I/O and core circuitry; must be low-impedance and adjacent to VCC pad. |
Key Features
| Feature | Design Value |
|---|---|
| eXecute-in-Place (XiP) support | Enables direct CPU instruction fetch from flash via 0-4-4 command format, eliminating RAM copy overhead and reducing boot latency. |
| Quad I/O (1-4-4) and continuous read | Doubles effective bandwidth vs. standard SPI by using all four I/O pins for address and data, with no opcode retransmission. |
| Ultra-Deep Power-Down (UDPD) | 7 nA typical current draw - ideal for battery-powered sensors requiring multi-year shelf life and wake-on-event operation. |
| Three 128-byte OTP security registers | Immutable storage for keys, certificates, or calibration data; programmable once and permanently locked against overwrite. |
| JEDEC SFDP v1.6 compliance | Allows automatic configuration of timing parameters and feature sets by host bootloader without hard-coded initialization sequences. |
Applications
| Industrial PLC Firmware Storage | IoT Edge Sensor Boot Memory |
|---|---|
|
Use Scenario: Storing firmware images and configuration tables for programmable logic controllers operating in harsh environments with wide temperature swings. IC Role / Device Role / Timing Role: Non-volatile program memory providing reliable boot code and runtime parameter storage across −40 °C to +105 °C. Use Value: 100k endurance and 10-year data retention at +105 °C ensure field-upgradable firmware remains intact over 15+ year product lifecycles. |
Use Scenario: Hosting bootloader and sensor fusion firmware in ultra-low-power wireless nodes powered by coin-cell batteries. IC Role / Device Role / Timing Role: Primary boot memory enabling fast XiP startup and ultra-low UDPD current during extended sleep intervals. Use Value: 7 nA UDPD current and 133 MHz XiP read speed reduce average system power by >40% versus discrete flash + RAM architectures. |
| Automotive Infotainment UI Assets | Medical Wearable Configuration Storage |
|
Use Scenario: Caching graphical assets, fonts, and localization strings for head-unit displays requiring rapid UI rendering on cold start. IC Role / Device Role / Timing Role: High-bandwidth quad I/O flash delivering burst reads at >50 MB/s to GPU or display controller via XiP-capable interface. Use Value: 1-4-4 and 0-4-4 modes eliminate command overhead, cutting asset load time by 3× compared to standard SPI. |
Use Scenario: Securing patient calibration profiles, usage logs, and regulatory compliance metadata in Class II wearable diagnostics devices. IC Role / Device Role / Timing Role: Trusted storage with OTP registers for cryptographic keys and immutable audit trails tied to device identity. Use Value: Factory-programmed 128-byte unique ID and three lockable OTP banks meet FDA 21 CFR Part 11 and IEC 62304 traceability 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 W25Q80DVSSIG | 8 Mbit, 1.65–3.6 V, 104 MHz max, no XiP or UDPD; only 1-1-1/1-1-4 modes. | Lacks XiP and ultra-low-power modes; suitable for cost-sensitive consumer apps where boot speed and battery life are secondary. | Choose when budget constraints outweigh need for XiP, UDPD, or SFDP auto-configuration. |
| Micron MT25QL08GA | 8 Mbit, 1.7–2.0 V or 2.7–3.6 V dual voltage, 133 MHz, supports XiP and SFDP but no UDPD (min 2.5 µA DPD). | Requires tighter VCC tolerance; lacks 7 nA UDPD for multi-year battery operation but offers broader industrial qualification. | Prefer for AEC-Q100-qualified automotive modules where voltage margin and qualification supersede lowest possible sleep current. |
Compared with W25Q80DVSSIG and MT25QL08GA, the AT25FF081A-UUN-T uniquely combines XiP, UDPD (7 nA), and full SFDP v1.6 in a single 2×3 mm DFN package-enabling both fastest boot and longest battery life in space-constrained edge devices.
Availability
AT25FF081A-UUN-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, IoT edge sensor boot memory, and automotive infotainment UI assets requiring stable component supply across extended product lifecycles.
Supply support for AT25FF081A-UUN-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 specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The AT25FF081A belongs to Renesas' high-performance serial flash memory product line, designed specifically for embedded systems demanding XiP capability, ultra-low-power sleep states, and robust security features in compact packages.
FAQ
What is the operating voltage range of the AT25FF081A-UUN-T?
The AT25FF081A-UUN-T operates from 1.65 V to 3.6 V, supporting direct interfacing with 1.8 V, 2.5 V, and 3.3 V host systems without external level-shifting circuitry. This wide range ensures compatibility across battery-powered, industrial, and automotive applications where supply rails vary significantly.
Does the AT25FF081A-UUN-T support execute-in-place (XiP) operation?
Yes, the AT25FF081A-UUN-T supports eXecute-in-Place (XiP) using the 0-4-4 command format, enabling CPUs to fetch instructions directly from flash memory without copying to RAM. This reduces boot time and eliminates RAM footprint overhead in memory-constrained embedded designs.
What is the minimum deep power-down current for the AT25FF081A-UUN-T?
The AT25FF081A-UUN-T achieves 7 nA typical current in Ultra-Deep Power-Down (UDPD) mode, verified per datasheet DS-AT25FF081A-183 Rev. P. This ultra-low quiescent current extends battery life in always-on IoT sensors and wearables requiring multi-year operational lifetime.
How many one-time programmable (OTP) security registers does the AT25FF081A-UUN-T include?
The AT25FF081A-UUN-T includes three 128-byte One-Time Programmable (OTP) security registers, plus a factory-programmed 128-byte unique identifier. Each OTP register can be permanently locked after programming to prevent tampering with cryptographic keys or calibration data.
Is the AT25FF081A-UUN-T compliant with JEDEC Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25FF081A-UUN-T fully complies with JEDEC SFDP v1.6. It exposes standardized parameter tables via command 5Ah, enabling host bootloaders to auto-detect timing requirements, supported commands, and feature sets-eliminating hardcoded initialization sequences.
AT25FF081A-UUN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 8Mbit
- Memory Organization:
- 2M x 4
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 22µs, 6.5ms
- 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-WLCSP (1.77x1.74)
AT25FF081A-UUN-T FAQ
1.How can I place an order for AT25FF081A-UUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF081A-UUN-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 AT25FF081A-UUN-T reliable?
The price and inventory of AT25FF081A-UUN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25FF081A-UUN-T is usually 5 days.
3.What payment methods are accepted for AT25FF081A-UUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF081A-UUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF081A-UUN-T?
AT25FF081A-UUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF081A-UUN-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 AT25FF081A-UUN-T?
For technical support, including AT25FF081A-UUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF081A-UUN-T requirements.
6.How does Aetrix verify that AT25FF081A-UUN-T is sourced from the original manufacturer or authorized distributors?
All AT25FF081A-UUN-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 AT25FF081A-UUN-T meets industry standards.
7.What is the process for return or replacement of AT25FF081A-UUN-T?
All AT25FF081A-UUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF081A-UUN-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 AT25FF081A-UUN-T part is unused and in its original packaging.
Return procedure for AT25FF081A-UUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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