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Renesas AT25FF081A-SSHN-T
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- Part No.:
- AT25FF081A-SSHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25FF081A-SSHN-T.pdf
- Description:
- IC FLASH 8MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,922
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Product details
Overview
AT25FF081A-SSHN-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) modes, and 133 MHz max clock frequency. It delivers uniform 4-kB/32-kB/64-kB block erase, 100k program/erase cycles at -40°C to +85°C, and ultra-low 7 nA Ultra-Deep Power-Down current - enabling reliable code storage and direct execution in battery-powered IoT edge nodes and industrial controllers.
For engineers reviewing the AT25FF081A-SSHN-T datasheet, AT25FF081A-SSHN-T pinout, AT25FF081A-SSHN-T application, or AT25FF081A-SSHN-T equivalent, key selection criteria include XiP support for reduced boot latency, multi-I/O bandwidth scalability, OTP security register programmability, and JEDEC SFDP compliance for automated configuration in embedded host systems.
Technical Context
The AT25FF081A-SSHN-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), and full quad I/O (1-4-4, 0-4-4) transfer protocols. Its internal architecture integrates a 256-byte SRAM buffer, status register lock mechanism, and nested erase/program suspend/resume capability.
Memory protection includes individual block lock/unlock (36h/39h), global lock/unlock (7Eh/98h), and user-definable protected regions at memory start or end. The device uses non-volatile and volatile status registers compliant with JEDEC JESD216 SFDP v1.6 for runtime parameter discovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MByte) - sufficient for firmware images in resource-constrained microcontrollers |
| Supply Voltage Range | 1.65 V – 3.6 V - enables direct interfacing with 1.8 V and 3.3 V logic without level shifters |
| Max Clock Frequency | 133 MHz (1-1-1 mode) - supports high-throughput read operations in real-time systems |
| Erase Granularity | Uniform 4-kB / 32-kB / 64-kB blocks + full chip erase - allows flexible firmware update partitioning |
| Power-Down Current | 7 nA Ultra-Deep Power-Down - extends battery life in always-on sensor nodes |
| Data Retention | 20 years at -40°C to +85°C - meets long-term reliability requirements for industrial deployments |
| Endurance | 100k program/erase cycles at -40°C to +85°C - supports frequent field firmware updates |
| Security Features | 1×128-byte factory UID + 3×128-byte OTP registers - enables secure device identity and key binding |
Pinout & Package
AT25FF081A-SSHN-T is packaged in an 8-lead, 150-mil narrow SOIC (Small Outline Integrated Circuit) with gull-wing leads and RoHS-compliant green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; deassertion places device in standby (not DPD) and tri-states SO |
| SO (I/O1) | Serial Output / Quad I/O Line 1 | Outputs data during read; bidirectional in quad I/O modes for address/data multiplexing |
| WP (I/O2) | Write Protect / Quad I/O Line 2 | Hardware write protection when low; functions as I/O2 in quad modes |
| HOLD/RESET (I/O3) | Hold Input or Hardware Reset | Holds ongoing transfers when low; asserts JEDEC-standard reset when pulsed per spec |
| SI (I/O0) | Serial Input / Quad I/O Line 0 | Accepts commands, addresses, and data; bidirectional in quad I/O for command/address input |
| SCK | Serial Clock | Drives all synchronous transfers; supports modes 0 and 3 (CPOL=0/1, CPHA=0) |
| VCC | Power Supply | 1.65 V–3.6 V core supply; powers internal logic, memory array, and I/O buffers |
| GND | Ground | Reference return path for all signals and power; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| eXecute-in-Place (XiP) support | Enables direct CPU instruction fetch from flash via 0-4-4 continuous read mode, eliminating RAM copy overhead |
| Quad I/O (1-4-4) interface | Doubles effective bandwidth vs. standard SPI by using all four I/O lines for address and data in single-cycle transfers |
| Program/Erase suspend/resume | Allows background erase to pause for urgent page programming, improving system responsiveness in multitask environments |
| JEDEC SFDP v1.6 compliance | Permits automatic detection of timing parameters, erase sizes, and feature sets by host bootloader without hardcoding |
| OTP security registers | Three 128-byte one-time-programmable areas support cryptographic key injection and immutable device identity binding |
| Ultra-Deep Power-Down (UDPD) | 7 nA quiescent current enables >10-year battery life in maintenance-free wireless sensor endpoints |
Applications
| Industrial PLC Firmware Storage | IoT Edge Node Code Execution |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Non-volatile code storage and XiP execution source for ARM Cortex-M7-based control CPUs. Use Value: Uniform 4-kB erase blocks allow atomic firmware patching without disrupting active control loops. | Use Scenario: Hosting boot loader and application firmware on battery-powered environmental sensors with BLE/Wi-Fi connectivity. IC Role / Device Role / Timing Role: Primary flash memory enabling direct code execution and secure OTA update staging. Use Value: 7 nA UDPD current extends CR2032 battery life beyond 5 years in sleep-dominated duty cycles. |
| Medical Wearable Boot Memory | Automotive Body Control Module |
Use Scenario: Storing certified firmware and calibration data in FDA-regulated wearable ECG monitors. IC Role / Device Role / Timing Role: Secure, high-reliability boot memory with OTP registers for cryptographic key sealing. Use Value: 20-year data retention and 100k endurance ensure lifetime firmware integrity across product service life. | Use Scenario: Holding lighting control firmware and CAN gateway configuration in automotive BCMs. IC Role / Device Role / Timing Role: SPI flash providing XiP-capable code storage compliant with AEC-Q100 Grade 2 (-40°C to +105°C). Use Value: 133 MHz max clock and quad I/O reduce boot time by 60% 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 W25Q80DVSSIQ | 8 Mbit, 1.65–3.6 V, 104 MHz max, no XiP or 0-4-4 mode; lacks OTP registers and SFDP v1.6 | Supports basic SPI boot but not continuous-read XiP; limited security for firmware signing | Choose when cost sensitivity outweighs XiP performance and cryptographic binding needs |
| Micron MT25QL80ABB8E12-0SIT | 8 Mbit, 1.7–2.0 V only, 133 MHz, full SFDP v1.6, XiP, but no OTP registers or UDPD (min 2 µA) | Requires external voltage regulation; suitable for high-speed compute platforms but not ultra-low-power edge nodes | Prefer for high-performance applications where 1.7–2.0 V rail is available and OTP is not required |
Compared with W25Q80DVSSIQ and MT25QL80ABB8E12-0SIT, the AT25FF081A-SSHN-T uniquely combines ultra-low-power UDPD, factory UID, three OTP registers, and 0-4-4 XiP mode - making it optimal for secure, battery-operated, latency-sensitive embedded systems requiring field-upgradable firmware.
Availability
AT25FF081A-SSHN-T is available at Aetrix Electronics and suitable for industrial PLCs, IoT edge nodes, medical wearables, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT25FF081A-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 industrial, automotive, and enterprise applications.
The AT25FF081A belongs to Renesas' high-performance serial flash memory product line, engineered for embedded systems demanding secure, low-power, and high-bandwidth code storage with eXecute-in-Place capability.
FAQ
What is the operating temperature range supported by the AT25FF081A-SSHN-T?
The AT25FF081A-SSHN-T is rated for industrial temperature operation from -40°C to +85°C. This range is validated for all electrical specifications including 100k program/erase cycles and 20-year data retention, making it suitable for deployment in harsh ambient environments without thermal derating.
Does the AT25FF081A-SSHN-T support true eXecute-in-Place (XiP) operation?
Yes, the AT25FF081A-SSHN-T supports XiP via its 0-4-4 command format, which enables continuous quad I/O reads without retransmitting opcodes. This eliminates instruction fetch latency and allows ARM or RISC-V cores to execute directly from flash - a capability confirmed in Section 5.6 and Figure 15–17 of the AT25FF081A-SSHN-T datasheet.
How many one-time programmable (OTP) security registers does the AT25FF081A-SSHN-T include?
The AT25FF081A-SSHN-T includes three 128-byte One Time Programmable (OTP) security registers, documented in Sections 1.1 and 7.22 of the datasheet. These registers support irreversible programming of cryptographic keys, device identifiers, or license tokens - and are distinct from the factory-programmed 128-byte unique ID.
What package type is used for the AT25FF081A-SSHN-T?
The AT25FF081A-SSHN-T uses an 8-lead, 150-mil narrow SOIC package with gull-wing leads and Pb/Halide-free (RoHS-compliant) finish. Pinout matches JEDEC MS-012, and mechanical dimensions are specified in Section 10.1 of the AT25FF081A-SSHN-T datasheet.
Can the AT25FF081A-SSHN-T enter ultra-low-power states during system sleep?
Yes, the AT25FF081A-SSHN-T supports Ultra-Deep Power-Down (UDPD) mode with typical current consumption of just 7 nA, activated via command 79h. This state retains full memory contents and is exited using ABh with device ID verification - ideal for multi-year battery operation in always-on sensing applications.
AT25FF081A-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:
- 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-SOIC
AT25FF081A-SSHN-T FAQ
1.How can I place an order for AT25FF081A-SSHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF081A-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 AT25FF081A-SSHN-T reliable?
The price and inventory of AT25FF081A-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 AT25FF081A-SSHN-T is usually 5 days.
3.What payment methods are accepted for AT25FF081A-SSHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF081A-SSHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF081A-SSHN-T?
AT25FF081A-SSHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF081A-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 AT25FF081A-SSHN-T?
For technical support, including AT25FF081A-SSHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF081A-SSHN-T requirements.
6.How does Aetrix verify that AT25FF081A-SSHN-T is sourced from the original manufacturer or authorized distributors?
All AT25FF081A-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 AT25FF081A-SSHN-T meets industry standards.
7.What is the process for return or replacement of AT25FF081A-SSHN-T?
All AT25FF081A-SSHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF081A-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 AT25FF081A-SSHN-T part is unused and in its original packaging.
Return procedure for AT25FF081A-SSHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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