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Renesas AT25DL081-UUN-T
- Part No.:
- AT25DL081-UUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
AT25DL081-UUN-T.pdf
- Description:
- IC FLASH 8MBIT SPI 100MHZ 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,971
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Product details
Overview
AT25DL081-UUN-T from Renesas Electronics is an 8-Mbit serial Flash memory IC designed for code shadowing and data storage in 1.8 V embedded systems. It operates from 1.65 V to 1.95 V, supports SPI Modes 0/3 and RapidS™ up to 100 MHz, delivers 5 ns clock-to-output time, and features uniform 4-kB/32-kB/64-kB block erase - enabling efficient firmware updates and secure parameter logging in industrial controllers.
For engineers reviewing the AT25DL081-UUN-T datasheet, AT25DL081-UUN-T pinout, AT25DL081-UUN-T application, or AT25DL081-UUN-T equivalent, key selection criteria include dual-I/O read/write capability, sector lockdown permanence, 128-byte OTP security register allocation, JEDEC-standard ID read, and deep power-down current of 8 µA for battery-backed IoT nodes.
Technical Context
The AT25DL081-UUN-T implements a flexible erase architecture with 16 × 64-kB sectors, supporting byte/page program (1–256 bytes), program/erase suspend/resume, and hardware/software sector protection via WP pin and status register control. Its Dual-Input Program and Dual-Output Read modes double effective throughput over standard SPI by utilizing SI/SO bidirectionally under specific commands.
It integrates dedicated logic for sector lockdown freeze, global protect/unprotect, and OTP security register programming - all accessible via JEDEC-standard command set. The device uses internal charge pumps for 1.65–1.95 V single-supply operation, eliminating external high-voltage requirements for erase/program cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MByte) organized as 16 × 64 kB sectors |
| Supply Voltage | 1.65 V – 1.95 V - enables direct interface with 1.8 V I/O domains without level shifting |
| Max Clock Frequency | 100 MHz (RapidS™ mode) - reduces instruction fetch latency in real-time boot sequences |
| Read Latency | 5 ns tV (clock-to-output) - supports high-speed CPU read-ahead without wait states |
| Erase Granularity | 4-kB, 32-kB, 64-kB blocks + full-chip - allows fine-grained firmware patching without disturbing adjacent code |
| Endurance & Retention | 100,000 program/erase cycles / 20-year data retention - validated for field-deployed industrial firmware storage |
| Deep Power-Down | 8 µA typical - extends battery life in always-on sensor nodes during idle periods |
Pinout & Package
AT25DL081-UUN-T is packaged in an 8-pad Ultra-thin DFN (5 × 6 × 0.6 mm), RoHS-compliant, halide-free package with wettable flank leads for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates command sequence on high-to-low transition and terminates on low-to-high |
| SCK | Serial Clock | Controls data latching (SI on rising edge) and output timing (SO on falling edge) |
| SI (SIO) | Serial Input / Dual-Output Data | Primary command/address/data input; becomes SIO output during Dual-Output Read for 2-bit-per-cycle reads |
| SO (SOI) | Serial Output / Dual-Input Data | Primary data output; becomes SOI input during Dual-Input Program for 2-bit-per-cycle writes |
| WP | Write Protect | Hardware lock for protected sectors; low-active; internally pulled high |
| HOLD | Communication Hold | Pauses ongoing SPI transfer without deselecting device; low-active; internally pulled high |
| VCC | Power Supply | 1.65–1.95 V core supply; powers internal charge pump for erase/program operations |
| GND | Ground Reference | System ground return path; required for stable internal voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read/Write | Enables 2× throughput vs. standard SPI: Dual-Output Read clocks 2 bits/cycle; Dual-Input Program accepts 2 bits/cycle |
| Sector Lockdown with Freeze | Any combination of 64-kB sectors can be permanently locked read-only via nonvolatile register; freeze prevents future modification |
| 128-byte OTP Security Register | 64 bytes factory-programmed (e.g., device UID), 64 bytes user-programmable - supports secure key binding and ESN storage |
| Flexible Erase Architecture | Uniform 4-kB, 32-kB, and 64-kB erase blocks allow precise code/data partitioning without wasted space from oversized sectors |
| Program/Erase Suspend | Halts active erase/program cycle to service urgent read requests - critical for real-time systems requiring deterministic latency |
Applications
| Firmware Boot Storage | Secure Parameter Logging |
|---|---|
|
Use Scenario: Storing bootloader and application firmware for microcontrollers in industrial gateways. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast random-access read and rapid sector-level update capability. Use Value: 100 MHz RapidS™ read speed and 5 ns tV enable sub-millisecond boot times; 4-kB erase granularity minimizes flash wear during OTA patches. |
Use Scenario: Recording calibration data, error logs, and configuration parameters in medical diagnostic equipment. IC Role / Device Role / Timing Role: Secure, long-retention data archive with hardware write protection against accidental overwrite. Use Value: Sector lockdown + freeze ensures regulatory-critical calibration data remains immutable after commissioning; 20-year retention meets IEC 62304 requirements. |
| IoT Edge Node Configuration | Secure Key Vault |
|
Use Scenario: Holding network credentials, TLS certificates, and device-specific settings in battery-powered smart meters. IC Role / Device Role / Timing Role: Low-power persistent storage with deep power-down mode for extended standby. Use Value: 8 µA deep power-down current extends 10-year battery life; OTP register stores unique keys resistant to physical extraction. |
Use Scenario: Isolating cryptographic keys and decryption routines in payment terminals and access control systems. IC Role / Device Role / Timing Role: Tamper-resistant memory region with permanent read-only lockdown for security-critical assets. Use Value: Freeze-enabled sector lockdown prevents runtime or firmware-level key modification; hardware WP pin adds physical layer protection. |
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, 1.65–1.95 V, SPI-only (no RapidS™), max 80 MHz, no sector lockdown freeze | Lacks permanent lockdown freeze and Dual-I/O; suitable for cost-sensitive consumer apps without security mandates | Choose when RapidS™ speed and immutable sector protection are not required; lower unit cost but reduced security assurance |
| Macronix MX25L8006EM1I-12G | 8 Mbit, 2.7–3.6 V only, no 1.8 V support, 104 MHz max, no OTP register or sector freeze | Requires level-shifting for 1.8 V systems; lacks OTP and lockdown - unsuitable for secure key storage | Select only if system uses 3.3 V supply and does not require 1.8 V compatibility, OTP serialization, or permanent lockdown |
Compared with W25Q80DVSSIG and MX25L8006EM1I-12G, the AT25DL081-UUN-T uniquely combines 1.8 V operation, RapidS™ acceleration, sector lockdown freeze, and 128-byte OTP - making it the only option meeting stringent security and low-voltage embedded requirements simultaneously.
Availability
AT25DL081-UUN-T is available at Aetrix Electronics and suitable for industrial controllers, medical diagnostics, and secure IoT edge nodes requiring stable component supply, long-term lifecycle support, and guaranteed green packaging compliance.
Supply support for AT25DL081-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 delivering trusted microcontrollers, analog, power, and memory solutions for automotive, industrial, and enterprise applications.
The AT25DL081-UUN-T belongs to Renesas' serial Flash memory product line, engineered specifically for secure, low-voltage, high-reliability code and data storage in resource-constrained embedded systems.
FAQ
What is the operating voltage range of the AT25DL081-UUN-T?
The AT25DL081-UUN-T operates from 1.65 V to 1.95 V, optimized for 1.8 V systems. This single-supply range eliminates the need for external voltage translators or charge pumps beyond those integrated into the device. All program, erase, and read functions are fully specified across this range, ensuring robust performance in battery-powered and low-power industrial designs where AT25DL081-UUN-T is deployed.
Does the AT25DL081-UUN-T support dual-line I/O operations?
Yes, the AT25DL081-UUN-T supports Dual-Input Program and Dual-Output Read modes, using both SI and SO pins concurrently to transfer two bits per clock cycle. This doubles effective bandwidth versus standard SPI, enabling faster firmware loading and data logging. These modes are activated via specific opcodes and require compatible controller firmware - a capability confirmed in the AT25DL081-UUN-T datasheet Rev.J.
How does sector lockdown work on the AT25DL081-UUN-T?
The AT25DL081-UUN-T allows any combination of its 16 × 64-kB sectors to be locked down via a nonvolatile register, making them permanently read-only. A separate "freeze" command locks the lockdown state itself, preventing further changes even with valid unlock commands. This hardware-enforced immutability is critical for storing cryptographic keys or regulatory firmware - a feature explicitly implemented in the AT25DL081-UUN-T and documented in Section 10.2 of its datasheet.
What is the purpose of the 128-byte OTP security register in the AT25DL081-UUN-T?
The 128-byte OTP security register in the AT25DL081-UUN-T provides tamper-resistant storage: 64 bytes are factory-programmed (e.g., unique device identifiers), and 64 bytes are user-programmable once. It serves use cases including electronic serial number (ESN) assignment, secure key binding, and anti-counterfeiting tokens. Unlike general flash memory, this register cannot be erased - a design feature intrinsic to the AT25DL081-UUN-T's security architecture.
Can the AT25DL081-UUN-T enter a low-power state, and what is its current draw?
Yes, the AT25DL081-UUN-T supports Deep Power-Down mode with a typical current draw of 8 µA. Entry is triggered via the Deep Power-Down command (B9h), and exit requires Resume (ABh) followed by a delay. This ultra-low quiescent current extends battery life in always-on edge devices - a verified specification in the AT25DL081-UUN-T's Electrical Characteristics table (Section 14.3).
AT25DL081-UUN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 8Mbit
- Memory Organization:
- 256 Bytes x 4096 pages
- Memory Interface:
- SPI
- Clock Frequency:
- 100 MHz
- Write Cycle Time - Word, Page:
- 8µs, 3ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WLCSP (4x2)
AT25DL081-UUN-T FAQ
1.How can I place an order for AT25DL081-UUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DL081-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 AT25DL081-UUN-T reliable?
The price and inventory of AT25DL081-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 AT25DL081-UUN-T is usually 5 days.
3.What payment methods are accepted for AT25DL081-UUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DL081-UUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DL081-UUN-T?
AT25DL081-UUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DL081-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 AT25DL081-UUN-T?
For technical support, including AT25DL081-UUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DL081-UUN-T requirements.
6.How does Aetrix verify that AT25DL081-UUN-T is sourced from the original manufacturer or authorized distributors?
All AT25DL081-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 AT25DL081-UUN-T meets industry standards.
7.What is the process for return or replacement of AT25DL081-UUN-T?
All AT25DL081-UUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DL081-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 AT25DL081-UUN-T part is unused and in its original packaging.
Return procedure for AT25DL081-UUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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