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Renesas AT25DL081-MHN-T
- Part No.:
- AT25DL081-MHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25DL081-MHN-T.pdf
- Description:
- IC FLASH 8MBIT SPI 100MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,090
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Product details
Overview
AT25DL081-MHN-T from Renesas Electronics is an 8-Mbit serial Flash memory IC designed for code shadowing and secure data storage in 1.8 V embedded systems. It operates from 1.65–1.95 V, supports SPI Modes 0/3 and RapidS™ (100 MHz), delivers 5 ns clock-to-output time, and features uniform 4-kB/32-kB/64-kB block erase with 16 × 64 kB sectors - enabling fine-grained firmware updates in industrial controllers and IoT edge nodes.
For engineers reviewing the AT25DL081-MHN-T datasheet, AT25DL081-MHN-T pinout, AT25DL081-MHN-T application, or AT25DL081-MHN-T equivalent, key selection criteria include dual-I/O read/write capability, hardware write protection via WP pin, sector lockdown permanence, 100,000 program/erase endurance, and compliance with industrial temperature range (–40°C to +85°C).
Technical Context
The AT25DL081-MHN-T implements a flexible erase architecture with four granularity levels: byte/page program (1–256 bytes), 4-kB/32-kB/64-kB block erase, and full-chip erase. Its dual-I/O mode enables simultaneous 2-bit data transfer on SI/SO pins during read and program operations, doubling throughput versus standard SPI.
Protection is enforced through three layered mechanisms: software-controlled sector protect/unprotect, hardware locking via active-low WP pin, and permanent sector lockdown with freeze option. A 128-byte OTP security register (64 B factory preprogrammed, 64 B user-programmable) supports device serialization and key storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MB) organized as 16 × 64 kB sectors - supports modular firmware partitioning and isolated data logging buffers. |
| Supply Voltage | 1.65 V – 1.95 V - compatible with 1.8 V core logic without level-shifting; no auxiliary voltage required for programming/erasing. |
| Max Clock Frequency | 100 MHz (RapidS™), 85 MHz (standard SPI) - enables sub-100 ns instruction fetch latency in boot-from-Flash designs. |
| Read Latency | 5 ns max clock-to-output (tV) - critical for real-time deterministic code execution in motor control and safety-critical firmware. |
| Erase Endurance | 100,000 program/erase cycles per sector - sufficient for field-upgradable firmware with over-the-air (OTA) update frequency up to once daily for >27 years. |
| Data Retention | 20 years at +85°C - validated for long-lifecycle industrial deployments including energy metering and railway signaling. |
| Power Consumption | 10 mA typical active read current (20 MHz), 8 µA deep power-down - enables battery-backed operation in low-power sensor nodes. |
Pinout & Package
AT25DL081-MHN-T is packaged in an 8-pad Ultra-thin DFN (5 mm × 6 mm × 0.6 mm), RoHS-compliant, halide-free package with wettable flanks for automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates command sequence on high-to-low transition; holds device in standby (not deep power-down) when deasserted. |
| SCK | Serial Clock | Master-generated clock; latches input on rising edge, clocks output on falling edge - defines timing for all SPI and RapidS™ transactions. |
| SI (SIO) | Serial Input / Dual-I/O Data In | Primary command/address/data input; becomes SIO (second output) during Dual-Output Read - enables 2-bit parallel read throughput. |
| SO (SOI) | Serial Output / Dual-I/O Data Out | Primary data output; becomes SOI (second input) during Dual-Input Program - enables 2-bit parallel program bandwidth. |
| WP | Write Protect | Hardware lock control; active-low; enables physical sector locking independent of software status register - prevents accidental writes during power transients. |
| HOLD | Communication Hold | Active-low pause signal; suspends ongoing SPI transfer without deselecting device or resetting internal state - preserves context during interrupt servicing. |
| VCC | Power Supply | 1.65–1.95 V supply; powers all internal logic and charge pumps - eliminates need for external high-voltage generators. |
| GND | Ground Reference | System ground return path; must be low-impedance connection to minimize noise coupling into sensitive read paths. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read/Program | Simultaneous 2-bit data transfer on SI/SO pins doubles effective bandwidth vs. standard SPI - reduces firmware update time by 50% in OTA applications. |
| Flexible Erase Granularity | Supports 4-kB, 32-kB, 64-kB block erase and full-chip erase - allows selective patching of bootloader, application, or configuration sectors without disturbing adjacent code. |
| Permanent Sector Lockdown | Any combination of 64 kB sectors can be frozen as read-only via OTP lockdown register - enforces immutable secure boot partitions and cryptographic key storage. |
| 128-byte OTP Security Register | 64 B factory-programmed (e.g., unique ID), 64 B user-programmable - enables secure device binding, ESN assignment, and encrypted key injection during manufacturing. |
| Program/Erase Suspend & Resume | Allows interruption of long erase cycles (e.g., 550 ms 64-kB erase) to service high-priority reads - maintains system responsiveness in real-time multitasking environments. |
Applications
| Industrial PLC Firmware Storage | IoT Edge Node Configuration |
|---|---|
|
Use Scenario: Storing and updating ladder logic programs and I/O mapping tables in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast random-access read for instruction fetching and atomic sector-level reprogramming during runtime. Use Value: 4-kB erase granularity enables patching of single function blocks without erasing entire application image; WP pin prevents corruption during brown-out events. |
Use Scenario: Holding calibrated sensor offsets, network credentials, and OTA update metadata in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Secure, low-power data retention element supporting frequent small writes and infrequent large rewrites. Use Value: Deep power-down current of 8 µA extends coin-cell life beyond 10 years; OTP register stores device-specific TLS certificates immune to overwrite. |
| Medical Diagnostic Bootloader | Automotive Infotainment UI Assets |
|
Use Scenario: Hosting certified bootloader firmware that validates signature of main application before execution in portable ultrasound devices. IC Role / Device Role / Timing Role: Immutable root-of-trust storage with hardware-enforced read-only lockdown of bootloader sector. Use Value: Sector lockdown freeze option makes bootloader region permanently unalterable after certification - satisfies IEC 62304 Class C software requirements. |
Use Scenario: Caching localized GUI assets (fonts, icons, voice prompts) in automotive head units with regional variants. IC Role / Device Role / Timing Role: High-bandwidth serial Flash supporting rapid parallelized asset loading via Dual-Output Read mode. Use Value: 100 MHz RapidS™ interface achieves >10 MB/s effective read throughput - cuts UI rendering latency by 40% vs. legacy 40 MHz SPI Flash. |
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™), 80 MHz max, no Dual-I/O, no sector lockdown freeze | Lacks permanent lockdown and dual-I/O; suitable only where firmware immutability and high-speed reads are noncritical | Select if cost sensitivity outweighs security and performance needs; verify absence of RapidS™ does not bottleneck boot time. |
| Macronix MX25L8006EM1I-12G | 8 Mbit, 2.7–3.6 V supply only, no 1.8 V support, 104 MHz, no OTP register, no deep power-down (25 µA) | Requires level-shifting in 1.8 V systems; higher active and standby current limits battery use cases | Choose only for legacy 3.3 V designs; incompatible with direct 1.8 V integration without voltage translation. |
Compared with W25Q80DVSSIG and MX25L8006EM1I-12G, AT25DL081-MHN-T uniquely combines 1.8 V native operation, RapidS™ acceleration, hardware-enforced permanent lockdown, and ultra-low deep power-down - making it the sole option for secure, low-power, high-performance boot and configuration storage in next-gen edge devices.
Availability
AT25DL081-MHN-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, IoT edge node configuration, medical diagnostic bootloader hosting, and automotive infotainment UI asset caching requiring stable component supply across multi-year production cycles.
Supply support for AT25DL081-MHN-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 embedded solutions for automotive, industrial, infrastructure, and IoT markets, with deep expertise in Flash memory reliability and security.
The AT25DL081-MHN-T belongs to Renesas' AT25DL family of serial Flash memories 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-MHN-T?
The AT25DL081-MHN-T operates from 1.65 V to 1.95 V, optimized for 1.8 V systems. It requires no auxiliary voltage for programming or erasing, simplifying power design in battery-powered or low-voltage rail-constrained applications. This range is validated across the full industrial temperature range (–40°C to +85°C), and operation outside this window may cause functional failure or data corruption.
Does the AT25DL081-MHN-T support dual-I/O read and program operations?
Yes, the AT25DL081-MHN-T supports both Dual-Output Read (using SI and SO pins simultaneously) and Dual-Input Program (using SI and SO pins as inputs). These modes double data throughput versus standard SPI, enabling faster firmware loading and configuration updates. The feature is enabled via specific opcodes (e.g., 3Bh for Dual-Output Read) and requires host controller support for dual-line timing.
How does sector lockdown work on the AT25DL081-MHN-T?
The AT25DL081-MHN-T allows any combination of its 16 × 64 kB sectors to be locked down via the Sector Lockdown Register. Once "frozen" using the Freeze Sector Lockdown State command, those sectors become permanently read-only - even after power cycles or resets. This is irreversible and provides hardware-enforced immutability for bootloader or cryptographic key regions.
What is the purpose of the 128-byte OTP security register in the AT25DL081-MHN-T?
AT25DL081-MHN-T's 128-byte OTP security register contains 64 bytes factory-programmed (e.g., unique device ID) and 64 bytes user-programmable. It supports secure device serialization, Electronic Serial Number (ESN) storage, and locked key injection - all resistant to reprogramming. This register is essential for implementing secure boot chains and device authentication in regulated industries.
Can the AT25DL081-MHN-T be used in deep power-down mode, and what is its current draw?
Yes, the AT25DL081-MHN-T supports Deep Power-Down mode entered via the 0xB9 command, reducing current consumption to 8 µA typical. In this state, the device retains all memory contents and configuration registers but ignores all commands except Resume (0xAB). This mode is ideal for battery-backed applications requiring multi-year data retention with minimal quiescent drain.
AT25DL081-MHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-UDFN (5x6)
AT25DL081-MHN-T FAQ
1.How can I place an order for AT25DL081-MHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DL081-MHN-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-MHN-T reliable?
The price and inventory of AT25DL081-MHN-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-MHN-T is usually 5 days.
3.What payment methods are accepted for AT25DL081-MHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DL081-MHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DL081-MHN-T?
AT25DL081-MHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DL081-MHN-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-MHN-T?
For technical support, including AT25DL081-MHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DL081-MHN-T requirements.
6.How does Aetrix verify that AT25DL081-MHN-T is sourced from the original manufacturer or authorized distributors?
All AT25DL081-MHN-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-MHN-T meets industry standards.
7.What is the process for return or replacement of AT25DL081-MHN-T?
All AT25DL081-MHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DL081-MHN-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-MHN-T part is unused and in its original packaging.
Return procedure for AT25DL081-MHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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