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Renesas AT25FF081A-MAHN-T
- Part No.:
- AT25FF081A-MAHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25FF081A-MAHN-T.pdf
- Description:
- IC FLASH 8MBIT SPI/QUAD 8UDFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT25FF081A-MAHN-T from Renesas Electronics is an 8-Mbit SPI serial flash memory IC operating across 1.65 V–3.6 V, supporting standard/dual/quad I/O and eXecute-in-Place (XiP) modes up to 133 MHz. It features 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. It serves as non-volatile program storage or direct code execution in resource-constrained embedded systems.
For engineers reviewing the AT25FF081A-MAHN-T datasheet, AT25FF081A-MAHN-T pinout, AT25FF081A-MAHN-T application, or AT25FF081A-MAHN-T equivalent, this page delivers verified electrical specs, package mapping to 8-pad 2×3×0.6 mm DFN, confirmed XiP and quad I/O timing behavior, and two validated alternative serial flash parts with documented functional and protection differences.
Technical Context
The AT25FF081A-MAHN-T implements a flexible SPI interface supporting modes 0 and 3, with command/address/data transfer configurable for 1-1-1, 1-1-2, 1-1-4, 1-4-4, and 0-4-4 protocols. Its internal architecture includes a 256-byte SRAM buffer, dedicated I/O interface unit for multi-I/O operation, and five status registers (SR1–SR5) with non-volatile/volatile variants and lockable protection bits.
Memory organization comprises 1024 uniform 4-kB sectors, enabling granular block-level protection via individual lock/unlock commands (36h/39h), global lock/unlock (7Eh/98h), and user-definable protected regions at memory start or end. Erase/program suspend-resume (75h/B0h, 7Ah/D0h) and nested operation support allow concurrent background operations without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MByte) - supports firmware images up to ~1 MB without external expansion |
| Supply Voltage Range | 1.65 V – 3.6 V - enables direct interfacing with 1.8 V, 2.5 V, and 3.3 V logic domains |
| Max Clock Frequency | 133 MHz in quad I/O (1-4-4) mode - achieves up to 66.5 MB/s effective read throughput |
| Erase Granularity | Uniform 4-kB / 32-kB / 64-kB blocks + full chip - allows precise field-upgrade partitioning |
| Power Consumption | 7 nA Ultra-Deep Power-Down current - extends battery life in always-on IoT endpoints |
| Data Retention | 20 years at –40°C to +85°C - meets long-lifecycle industrial control and medical device requirements |
| Endurance | 100k program/erase cycles at –40°C to +85°C - supports frequent OTA update cycles |
| Security Features | 3 × 128-byte OTP security registers + factory-programmed 128-byte UID - enables secure boot key binding and device identity |
Pinout & Package
AT25FF081A-MAHN-T is packaged in an 8-pad, 2 mm × 3 mm × 0.6 mm DFN (Dual Flat No-lead) with wettable flanks, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low enable signal; deassertion places device in standby (30 µA), not deep power-down |
| SO (I/O1) | Serial Output / Quad I/O Data Line 1 | Outputs data during standard/dual/quad reads; bidirectional in quad I/O mode |
| WP (I/O2) | Write Protect / Quad I/O Data Line 2 | Hardware write protection when low; functions as I/O2 in quad I/O and XiP modes |
| HOLD/RESET (I/O3) | Hold Input / Reset Function / Quad I/O Data Line 3 | Suspends ongoing transfers when held low; issues JEDEC hardware reset when pulsed; acts as I/O3 in quad modes |
| SI (I/O0) | Serial Input / Quad I/O Data Line 0 | Accepts commands, addresses, and data; bidirectional in quad I/O and XiP modes |
| SCK | Serial Clock Input | Drives all SPI transfers; supports up to 133 MHz in quad I/O mode with defined setup/hold timing |
| VCC | Power Supply | 1.65 V–3.6 V supply; decoupling required per datasheet layout guidelines |
| GND | Ground Reference | Common return path for all I/O and core logic; separate analog/digital ground not required |
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) and dual output (1-1-2) modes | Doubles/quadruples effective bandwidth vs. standard SPI, reducing boot time and firmware load latency |
| Erase/program suspend-resume | Allows host to pause active erase or program operations to service higher-priority interrupts, then resume without data loss |
| Individual and global block protection | Prevents accidental overwrite of bootloader or calibration data using software-configurable lock bits per 4-kB sector |
| Ultra-Deep Power-Down (UDPD) | Reduces current to 7 nA while retaining memory state - critical for battery-powered sensors with multi-year shelf life |
| Serial Flash Discoverable Parameters (SFDP) | Provides standardized, vendor-agnostic access to device geometry, timing, and feature tables via 5Ah command |
Applications
| Industrial PLC Firmware Storage | IoT Edge Sensor Boot Memory |
|---|---|
|
Use Scenario: Storing programmable logic controller firmware updated infrequently but requiring guaranteed integrity over 15+ years in factory environments. IC Role / Device Role / Timing Role: Non-volatile program memory with XiP capability, serving as primary boot source for ARM Cortex-M7 microcontrollers. Use Value: 20-year data retention and 100k endurance ensure firmware survives decades of thermal cycling and occasional field updates without degradation. |
Use Scenario: Providing boot code and configuration storage for battery-powered environmental sensors deployed in remote locations. IC Role / Device Role / Timing Role: Low-power serial flash executing startup routines directly (XiP) while minimizing wake-up latency and energy draw. Use Value: 7 nA UDPD current extends 10-year battery life; quad I/O mode reduces boot time by >60% vs. standard SPI. |
| Medical Diagnostic Device Configuration | Automotive Infotainment System Code Storage |
|
Use Scenario: Holding calibrated sensor coefficients, regulatory compliance flags, and safety-critical boot parameters in portable ultrasound units. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage using OTP registers and individual block locking to prevent unauthorized modification. Use Value: Three 128-byte OTP registers bind cryptographic keys to hardware; 4-kB sector locking isolates calibration data from application updates. |
Use Scenario: Storing Linux kernel, root filesystem, and UI assets in head-unit modules requiring fast boot and robust over-the-air update handling. IC Role / Device Role / Timing Role: High-bandwidth quad I/O flash supporting simultaneous read (kernel) and program (update) via suspend-resume. Use Value: 133 MHz quad I/O read speed enables sub-500 ms kernel load; nested erase/program operations prevent update timeouts during vehicle ignition. |
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, supports 133 MHz quad I/O but lacks XiP continuous read (0-4-4) and OTP security registers | No native XiP acceleration or hardware-locked security registers; requires external SW management of protected regions | Select when XiP and OTP are unnecessary and cost sensitivity outweighs advanced security needs |
| Micron MT25QL80ABB8E12-0SIT | 8 Mbit, 1.7–2.0 V only (not 1.65–3.6 V); supports 133 MHz quad I/O and SFDP, but no UDPD mode (min 2 µA DPD) | Requires tighter voltage regulation; unsuitable for wide-input buck-boost or single-cell Li-ion systems | Select for fixed 1.8 V rail designs where lowest possible DPD (not UDPD) suffices and JEDEC JESD216 rev B compliance is mandatory |
Compared with W25Q80DVSSIG and MT25QL80ABB8E12-0SIT, the AT25FF081A-MAHN-T uniquely combines ultra-low 7 nA UDPD, factory-programmed UID, three OTP registers, and true 0-4-4 XiP mode - making it optimal for battery-constrained, security-aware, and fast-boot embedded systems where voltage flexibility and long-term data integrity are non-negotiable.
Availability
AT25FF081A-MAHN-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, IoT edge sensor boot memory, medical diagnostic device configuration, and automotive infotainment system code storage requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT25FF081A-MAHN-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 microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets with emphasis on reliability and long-term support.
The AT25FF081A product line targets high-reliability embedded systems needing flexible voltage operation, ultra-low power states, and secure firmware storage - specifically engineered for industrial control, medical devices, and battery-powered edge nodes.
FAQ
What is the operating voltage range of the AT25FF081A-MAHN-T?
The AT25FF081A-MAHN-T operates across 1.65 V to 3.6 V, enabling direct compatibility with 1.8 V, 2.5 V, and 3.3 V system rails without level-shifting. This wide range supports battery-powered designs with varying discharge profiles and mixed-voltage SoC interfaces. The AT25FF081A-MAHN-T maintains full functionality-including 133 MHz quad I/O and UDPD-across the entire range per datasheet Section 8.2.
Does the AT25FF081A-MAHN-T support execute-in-place (XiP) operation?
Yes, the AT25FF081A-MAHN-T supports true eXecute-in-Place via its 0-4-4 command format (EBh/E7h), which eliminates opcode retransmission for consecutive reads. This enables CPU instruction fetch directly from flash without RAM buffering. The AT25FF081A-MAHN-T's internal I/O interface unit and SRAM buffer sustain burst reads at up to 133 MHz, reducing boot latency by >50% compared to standard SPI.
What package type is used for the AT25FF081A-MAHN-T?
The AT25FF081A-MAHN-T uses an 8-pad, 2 mm × 3 mm × 0.6 mm DFN package with wettable flanks, specified in Renesas datasheet Section 10.3. This compact, RoHS-compliant footprint supports automated optical inspection (AOI) and provides thermal performance suitable for high-density PCB layouts in space-constrained IoT and portable medical devices.
How does the AT25FF081A-MAHN-T handle power-down states?
The AT25FF081A-MAHN-T offers three low-power states: standby (30 µA), Deep Power-Down (DPD, 8.5 µA), and Ultra-Deep Power-Down (UDPD, 7 nA). UDPD retains memory contents indefinitely while drawing negligible current-critical for battery-backed applications. Entry/exit is controlled via B9h and ABh commands, with defined timing per datasheet Tables 7 and 8. The AT25FF081A-MAHN-T resumes operation within 35 µs after exit.
What security features does the AT25FF081A-MAHN-T provide?
The AT25FF081A-MAHN-T integrates a factory-programmed 128-byte unique identifier and three 128-byte One-Time Programmable (OTP) security registers. These support secure boot key binding, device authentication, and immutable configuration storage. Block-level protection (via 36h/39h/7Eh/98h commands) and status register locking (6Fh) prevent runtime tampering. All security functions are hardware-enforced and retain state through power cycles.
AT25FF081A-MAHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- 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-UDFN (2x3)
AT25FF081A-MAHN-T FAQ
1.How can I place an order for AT25FF081A-MAHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF081A-MAHN-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-MAHN-T reliable?
The price and inventory of AT25FF081A-MAHN-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-MAHN-T is usually 5 days.
3.What payment methods are accepted for AT25FF081A-MAHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF081A-MAHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF081A-MAHN-T?
AT25FF081A-MAHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF081A-MAHN-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-MAHN-T?
For technical support, including AT25FF081A-MAHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF081A-MAHN-T requirements.
6.How does Aetrix verify that AT25FF081A-MAHN-T is sourced from the original manufacturer or authorized distributors?
All AT25FF081A-MAHN-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-MAHN-T meets industry standards.
7.What is the process for return or replacement of AT25FF081A-MAHN-T?
All AT25FF081A-MAHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF081A-MAHN-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-MAHN-T part is unused and in its original packaging.
Return procedure for AT25FF081A-MAHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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