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Renesas AT25FF041A-UUN-T
- Part No.:
- AT25FF041A-UUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
AT25FF041A-UUN-T.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:14,592
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Product details
Overview
AT25FF041A-UUN-T from Renesas Electronics is a 4-Mbit serial flash memory IC supporting SPI, dual-output (1-1-2), quad-output (1-1-4), and quad I/O XiP (1-4-4/0-4-4) modes with 133 MHz max clock frequency, 1.65 V–3.6 V supply range, and uniform 4/32/64-kB block erase. It serves as non-volatile program/data storage in microcontroller boot loaders and firmware update modules.
For engineers reviewing the AT25FF041A-UUN-T datasheet, AT25FF041A-UUN-T pinout, AT25FF041A-UUN-T application, or AT25FF041A-UUN-T equivalent, key selection criteria include multi-I/O timing compatibility, deep power-down current (7 nA), OTP security register support, and JEDEC SFDP compliance for automatic configuration in embedded host systems.
Technical Context
The AT25FF041A-UUN-T implements a flexible SPI-compatible interface with hardware reset (JEDEC standard), volatile/non-volatile status registers, and configurable I/O drive strength. Its memory architecture supports nested erase/program suspend-resume operations and burst wrap addressing for efficient XiP execution.
It features three 128-byte One-Time Programmable (OTP) security registers, a factory-programmed 128-byte unique ID, and multiple protection schemes including individual block lock, global lock, and user-definable protected regions at memory start or end - all accessible via dedicated commands (36h/39h/7Eh/98h/9Bh).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB) organized as 64 × 64-kB blocks; enables compact firmware storage without external address latches. |
| Interface Modes | SPI modes 0/3, dual-output (1-1-2), quad-output (1-1-4), quad I/O XiP (1-4-4, 0-4-4); allows bandwidth scaling from 104 MB/s to >400 MB/s effective throughput. |
| Max Clock Frequency | 133 MHz in quad I/O mode; supports high-speed code execution directly from flash (XiP) in resource-constrained MCUs. |
| Power Consumption | 7 nA Ultra-Deep Power-Down current; extends battery life in always-on IoT edge nodes during extended sleep cycles. |
| Erase Endurance | 100k cycles at -40°C to +85°C; ensures reliable field firmware updates over 10+ years in industrial control applications. |
| Data Retention | 20 years at -40°C to +85°C; meets long-term data integrity requirements for medical device configuration storage. |
| Operating Voltage | 1.65 V–3.6 V single supply; interoperates with 1.8 V and 3.3 V logic families without level shifters. |
Pinout & Package
AT25FF041A-UUN-T is packaged in an 8-lead, 208-mil wide SOIC (Small Outline Integrated Circuit) with gull-wing leads, RoHS-compliant and halide-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 / /CS | Chip Select | Active-low enable for SPI command/address/data transfers; supports daisy-chaining with shared SCLK/MOSI/MISO. |
| 2 / DO (IO1) | Data Output / I/O 1 | Primary output in standard/dual mode; bidirectional in quad I/O mode; supports pull-up/pull-down configuration. |
| 3 / WP (IO2) | Write Protect / I/O 2 | Hardware write protection when low; functions as IO2 in quad I/O mode; configurable via status register. |
| 4 / GND | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection. |
| 5 / SI (IO0) | Serial Input / I/O 0 | Command/address/data input in standard mode; bidirectional IO0 in quad I/O mode; supports sequential programming. |
| 6 / SO (IO3) | Serial Output / I/O 3 | Standard output in single/dual mode; functions as IO3 in quad I/O mode; enables full 4-line bidirectional bus. |
| 7 / HOLD (IO4) | Hold / I/O 4 | Pauses ongoing transfer without deselecting device; repurposed as IO4 in quad I/O mode for expanded bandwidth. |
| 8 / VCC | Power Supply | 1.65–3.6 V supply input; requires local 100 nF ceramic decoupling capacitor per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O XiP Mode | Enables direct code execution from flash using 4-line bidirectional data bus (1-4-4/0-4-4), reducing MCU external memory controller overhead. |
| Program/Erase Suspend-Resume | Allows interrupting long erase/program operations to service time-critical reads, improving real-time system responsiveness. |
| Three 128-byte OTP Registers | Provides immutable storage for cryptographic keys, calibration data, or device-specific credentials with permanent lock capability (9Bh/6Fh). |
| Ultra-Deep Power-Down (7 nA) | Reduces standby leakage to near-zero levels during extended sleep, critical for battery-powered asset trackers and wearables. |
| JEDEC SFDP Compliance | Allows host MCU to auto-detect memory geometry, timing parameters, and feature set via standardized 5Ah command - eliminating hard-coded initialization. |
Applications
| Industrial PLC Firmware Storage | Automotive Telematics Boot Memory |
|---|---|
|
Use Scenario: Storing bootloader and application firmware in programmable logic controllers operating continuously in harsh factory environments. IC Role / Device Role / Timing Role: Non-volatile program memory with fast random read access and robust erase endurance under thermal cycling. Use Value: 100k erase/program cycles and 20-year data retention ensure firmware reliability across 15+ year PLC service life without replacement. |
Use Scenario: Hosting secure boot images and OTA update partitions in vehicle telematics control units requiring ASIL-B alignment. IC Role / Device Role / Timing Role: Trusted firmware storage with OTP security registers for key binding and hardware-rooted authentication. Use Value: Factory-programmed unique ID and three OTP registers enable cryptographic binding of firmware to specific ECUs, preventing cloning. |
| Medical Device Configuration Archive | Smart Meter Firmware Update Buffer |
|
Use Scenario: Retaining calibrated sensor offsets, user preferences, and regulatory audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-power, high-reliability data archive with guaranteed 10-year retention at +105°C ambient. Use Value: 10-year data retention at -40°C to +105°C ensures calibration validity through sterilization cycles and extended shelf life. |
Use Scenario: Buffering encrypted firmware patches prior to validated installation in utility smart meters deployed in unattended outdoor locations. IC Role / Device Role / Timing Role: Secure, field-upgradable storage with individual block protection to isolate active and pending firmware images. Use Value: Uniform 4-kB block erase enables atomic patch updates without corrupting running firmware, meeting ANSI C12.22 security requirements. |
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 W25Q40EW | 4 Mbit density, 1.7–2.0 V or 2.7–3.6 V dual voltage range; no OTP registers; 104 MHz max quad read speed. | Lacks hardware security features; suitable for cost-sensitive consumer devices without cryptographic requirements. | Select W25Q40EW only if voltage margin flexibility outweighs need for OTP security and XiP performance. |
| Macronix MX25L4006E | 4 Mbit density, 2.7–3.6 V only; supports 80 MHz quad I/O; no SFDP; no ultra-deep power-down (7 nA) mode. | Lower power efficiency in deep sleep; lacks auto-configuration capability for heterogeneous host platforms. | Choose MX25L4006E only when legacy host firmware cannot parse SFDP tables and 3.3 V-only supply is acceptable. |
Compared with W25Q40EW and MX25L4006E, the AT25FF041A-UUN-T delivers superior security (OTP + unique ID), broader voltage operation (1.65–3.6 V), lower deep-sleep current (7 nA), and standardized SFDP-based initialization - making it optimal for secure, battery-aware, and auto-configurable embedded systems.
Availability
AT25FF041A-UUN-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive telematics boot memory, and medical device configuration archive applications requiring stable component supply and long-term lifecycle support.
Supply support for AT25FF041A-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 specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and enterprise applications.
The AT25FF041A-UUN-T belongs to Renesas' AT25FF family of high-performance serial flash memories designed for secure, low-power, and high-bandwidth embedded firmware and data storage in constrained environments.
FAQ
What is the operating voltage range of the AT25FF041A-UUN-T?
The AT25FF041A-UUN-T operates from 1.65 V to 3.6 V over its full temperature range. This single-supply compatibility eliminates the need for level-shifting circuitry when interfacing with both 1.8 V and 3.3 V microcontrollers, simplifying board design and reducing BOM count in mixed-voltage systems where the AT25FF041A-UUN-T serves as primary firmware storage.
Does the AT25FF041A-UUN-T support execute-in-place (XiP) operation?
Yes, the AT25FF041A-UUN-T supports quad I/O XiP mode (1-4-4 and 0-4-4) enabling direct code execution from flash without copying to RAM. This capability reduces MCU memory footprint and boot latency, and is fully supported by the AT25FF041A-UUN-T's burst wrap addressing and suspend-resume functionality for seamless real-time interrupt handling during XiP execution.
How many One-Time Programmable (OTP) security registers does the AT25FF041A-UUN-T include?
The AT25FF041A-UUN-T includes three 128-byte OTP security registers, each individually lockable via command 9Bh and protected by status register lock (6Fh). These registers provide tamper-resistant storage for cryptographic keys, calibration data, or device identity - a core security feature distinguishing the AT25FF041A-UUN-T from basic serial flash alternatives.
What is the minimum deep power-down current for the AT25FF041A-UUN-T?
The AT25FF041A-UUN-T achieves 7 nA typical current in Ultra-Deep Power-Down (UDPD) mode, as specified in the official Renesas datasheet DS-AT25FF041A-184. This ultra-low leakage enables multi-year battery operation in always-on sensors and metering devices where the AT25FF041A-UUN-T remains powered but inactive between periodic wake-ups.
Is the AT25FF041A-UUN-T compatible with JEDEC-standard Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25FF041A-UUN-T implements JEDEC JESD216-compliant SFDP via command 5Ah, allowing host processors to automatically detect memory size, timing parameters, erase granularity, and supported instruction sets. This eliminates hardcoded initialization sequences and enhances firmware portability across platforms using the AT25FF041A-UUN-T as boot or configuration memory.
AT25FF041A-UUN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 4Mbit
- Memory Organization:
- 2M x 2
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 22µs, 2.6ms
- 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-WLCSP (1.77x1.74)
AT25FF041A-UUN-T FAQ
1.How can I place an order for AT25FF041A-UUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF041A-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 AT25FF041A-UUN-T reliable?
The price and inventory of AT25FF041A-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 AT25FF041A-UUN-T is usually 5 days.
3.What payment methods are accepted for AT25FF041A-UUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF041A-UUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF041A-UUN-T?
AT25FF041A-UUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF041A-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 AT25FF041A-UUN-T?
For technical support, including AT25FF041A-UUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF041A-UUN-T requirements.
6.How does Aetrix verify that AT25FF041A-UUN-T is sourced from the original manufacturer or authorized distributors?
All AT25FF041A-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 AT25FF041A-UUN-T meets industry standards.
7.What is the process for return or replacement of AT25FF041A-UUN-T?
All AT25FF041A-UUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF041A-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 AT25FF041A-UUN-T part is unused and in its original packaging.
Return procedure for AT25FF041A-UUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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