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Renesas AT25DL081-SSHN-T
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- Part No.:
- AT25DL081-SSHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25DL081-SSHN-T.pdf
- Description:
- IC FLASH 8MBIT SPI 100MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:52,941
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Product details
Overview
AT25DL081-SSHN-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™ up to 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 efficient firmware updates in industrial controllers and IoT edge nodes.
For engineers reviewing the AT25DL081-SSHN-T datasheet, AT25DL081-SSHN-T pinout, AT25DL081-SSHN-T application, or AT25DL081-SSHN-T equivalent, key selection criteria include dual-I/O read/write capability, hardware write protection via WP pin, sector lockdown permanence, OTP security register usability, and deep power-down current of 8 µA for battery-sensitive designs.
Technical Context
The AT25DL081-SSHN-T implements a flexible erase architecture with four granularities (4-kB, 32-kB, 64-kB, full-chip), enabling targeted firmware patching without disturbing protected code segments. Its Dual-Input Program and Dual-Output Read modes double effective throughput versus standard SPI by transferring two bits per clock edge.
Protection is enforced through layered mechanisms: software-controlled sector protect/unprotect, hardware WP-pin locking, and permanent sector lockdown with freeze option. The 128-byte OTP register includes 64 bytes factory-programmed and 64 bytes user-programmable for ESN or cryptographic key storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MByte) organized as 16 × 64 kB sectors - supports modular firmware partitioning and isolated data logging. |
| Supply Voltage | 1.65 V – 1.95 V - compatible with 1.8 V core logic without level-shifting or auxiliary supplies. |
| Max Clock Frequency | 100 MHz (RapidS™), 85 MHz (standard SPI) - enables sub-100 ns instruction fetch latency in boot-from-Flash systems. |
| Read Latency | 5 ns tV (clock-to-output) - minimizes wait states during high-speed code execution from memory-mapped interfaces. |
| Erase Performance | 50 ms (4-kB block), 550 ms (64-kB block) - allows rapid field updates of application modules without system downtime. |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention - validated for industrial lifecycle requirements in unattended equipment. |
| Power Consumption | 10 mA active read (20 MHz), 8 µA deep power-down - extends battery life in portable diagnostics and sensor hubs. |
Pinout & Package
AT25DL081-SSHN-T is packaged in an 8-lead, 150-mil narrow SOIC (SOIC-8) with standard JEDEC footprint and RoHS-compliant lead finish.
| 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 - essential for multi-device SPI bus arbitration. |
| SCK | Serial Clock | Master-generated clock; latches SI on rising edge and clocks SO on falling edge - defines timing compliance with SPI Mode 0/3. |
| SI (SIO) | Serial Input / Dual-Output | Command/address/data input; becomes SIO output during Dual-Output Read - enables 2-bit-per-cycle read bandwidth doubling. |
| SO (SOI) | Serial Output / Dual-Input | Data output; becomes SOI input during Dual-Input Program - supports concurrent 2-bit programming for faster page writes. |
| WP | Write Protect | Hardware lock control; low-active signal freezes sector protection state - prevents accidental erase/write during power transients or firmware bugs. |
| HOLD | Communication Pause | Low-active hold; suspends SPI transfer without deselecting device - preserves internal state during MCU interrupt servicing. |
| VCC | Power Supply | 1.65–1.95 V supply input - powers all logic and Flash array; no charge pump or external VPP required. |
| GND | Ground Reference | System ground return path - must be low-impedance to maintain signal integrity during high-speed reads. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read/Write | Enables 2-bit-per-clock data transfer, doubling effective bandwidth over standard SPI - critical for real-time firmware loading in boot ROM replacement. |
| Uniform Block Erase | Supports 4-kB, 32-kB, and 64-kB erase blocks - allows precise erasure of individual bootloader, app, or config partitions without affecting adjacent code. |
| Sector Lockdown + Freeze | Permits permanent read-only locking of any 64-kB sector; freeze option disables further modification - meets secure boot and regulatory tamper-proofing requirements. |
| 128-byte OTP Security Register | 64 bytes factory-programmed (e.g., unique ID), 64 bytes user-programmable - provides immutable device identity and key storage for TLS certificate binding. |
| Deep Power-Down Mode | 8 µA typical current draw - reduces standby power in always-on edge devices such as smart meters and wireless sensors. |
Applications
| Industrial PLC Firmware Storage | Medical Diagnostic Device Boot Memory |
|---|---|
Use Scenario: Stores programmable logic controller firmware updated via field service tools or OTA channels. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing fast, reliable code shadowing into RAM with secure update rollback capability. Use Value: Uniform 4-kB erase granularity enables patch-level updates without full reflash; WP pin prevents corruption during brown-out events. | Use Scenario: Holds certified diagnostic algorithms and calibration data in FDA-cleared handheld ultrasound units. IC Role / Device Role / Timing Role: Secure, long-retention storage for safety-critical firmware and encrypted patient data logs. Use Value: Sector lockdown + freeze ensures bootloader and algorithm partitions remain immutable post-certification; OTP stores device-specific keys. |
| Smart Energy Meter Code Storage | Automotive Telematics Module Configuration |
Use Scenario: Stores AMI firmware, tariff tables, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: High-endurance Flash memory supporting 100,000+ field updates over 20-year lifetime. Use Value: 20-year data retention and 100K cycle endurance meet ANSI/IEEE meter longevity standards; deep power-down extends battery backup life. | Use Scenario: Stores vehicle-specific configuration profiles, OTA update staging buffers, and CAN gateway routing tables. IC Role / Device Role / Timing Role: Dual-I/O capable Flash memory interfacing with automotive-grade microcontrollers via SPI. Use Value: 100 MHz RapidS™ operation accelerates firmware validation before CAN bus activation; hardware WP prevents misconfiguration during ignition cycling. |
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 sector lockdown freeze | Lacks permanent lockdown freeze and RapidS™ acceleration - suitable for cost-sensitive consumer apps without security certification | Select when RapidS™ speed and immutable sector locking are not required; verify WP pin behavior matches design. |
| Macronix MX25L8006EM1I-12G | 8 Mbit, 2.7–3.6 V only, no 1.8 V support, 80 MHz, no OTP register or sector freeze | Requires 3.3 V supply - incompatible with 1.8 V SoCs; lacks OTP and permanent lockdown - unsuitable for secure boot | Choose only if system uses 3.3 V I/O; cannot replace AT25DL081-SSHN-T in 1.8 V or security-critical designs. |
Compared with W25Q80DVSSIG and MX25L8006EM1I-12G, the AT25DL081-SSHN-T uniquely combines 1.8 V operation, RapidS™ speed, permanent sector lockdown with freeze, and user-programmable OTP - making it the sole option for secure, low-voltage, high-throughput embedded Flash in industrial and medical applications.
Availability
AT25DL081-SSHN-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic instruments, smart energy meters, and automotive telematics modules requiring stable component supply across extended product lifecycles.
Supply support for AT25DL081-SSHN-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, infrastructure, and IoT markets.
The AT25DL081-SSHN-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 operating at 1.8 V.
FAQ
What voltage range does the AT25DL081-SSHN-T support, and why is that important?
The AT25DL081-SSHN-T supports 1.65 V to 1.95 V, optimized for 1.8 V systems. This eliminates level-shifters in modern ultra-low-power MCUs and SoCs, reduces BOM cost, and avoids reliability risks from voltage translation. Unlike 3.3 V Flash parts, the AT25DL081-SSHN-T maintains full functionality-including RapidS™ mode and sector lockdown-across its entire supply range without performance derating.
Does the AT25DL081-SSHN-T support true dual-I/O operation, and how does it differ from standard SPI?
Yes, the AT25DL081-SSHN-T supports Dual-Output Read and Dual-Input Program modes. In Dual-Output Read, both SO and SI pins output data on each SCK falling edge, doubling read bandwidth. In Dual-Input Program, SO and SI accept data on each SCK rising edge, accelerating page programming. These modes are enabled via specific opcodes and require no external hardware changes - unlike generic "quad" or "octal" Flash, which need additional pins or packages.
How does sector lockdown with freeze work on the AT25DL081-SSHN-T, and what use cases require it?
Sector lockdown lets users permanently lock any combination of 64 kB sectors as read-only; the freeze command makes that state irreversible. Once frozen, no software command or hardware signal can unlock or modify those sectors. This is mandatory for secure boot implementations, regulatory-certified firmware (e.g., IEC 62304 Class C), and cryptographic key storage where post-deployment tampering must be physically impossible - a capability absent in most competing 8 Mbit Flash devices.
What is the purpose and structure of the OTP security register in the AT25DL081-SSHN-T?
The AT25DL081-SSHN-T includes a 128-byte OTP security register: 64 bytes factory-programmed (e.g., unique silicon ID) and 64 bytes user-programmable. It is used for device serialization, ESN storage, or storing cryptographic keys bound to hardware identity. Programming is one-time only per byte; once written, contents cannot be altered - providing hardware-rooted trust for TLS authentication, secure boot verification, and anti-cloning measures.
Can the AT25DL081-SSHN-T operate in deep power-down mode, and what is its impact on system power budget?
Yes, the AT25DL081-SSHN-T supports deep power-down mode with 8 µA typical current draw. This mode retains all memory contents while reducing quiescent power by >99% compared to active read (10 mA). For battery-powered edge devices like portable gas detectors or wireless sensor nodes with 10-year target lifetime, this feature directly extends operational runtime and enables aggressive duty-cycling strategies without sacrificing nonvolatile storage integrity.
AT25DL081-SSHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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-SOIC
AT25DL081-SSHN-T FAQ
1.How can I place an order for AT25DL081-SSHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DL081-SSHN-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-SSHN-T reliable?
The price and inventory of AT25DL081-SSHN-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-SSHN-T is usually 5 days.
3.What payment methods are accepted for AT25DL081-SSHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DL081-SSHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DL081-SSHN-T?
AT25DL081-SSHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DL081-SSHN-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-SSHN-T?
For technical support, including AT25DL081-SSHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DL081-SSHN-T requirements.
6.How does Aetrix verify that AT25DL081-SSHN-T is sourced from the original manufacturer or authorized distributors?
All AT25DL081-SSHN-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-SSHN-T meets industry standards.
7.What is the process for return or replacement of AT25DL081-SSHN-T?
All AT25DL081-SSHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DL081-SSHN-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-SSHN-T part is unused and in its original packaging.
Return procedure for AT25DL081-SSHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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