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Renesas AT25FF041A-DWF
- Part No.:
- AT25FF041A-DWF
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
AT25FF041A-DWF.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD WAFER
- Quantity:
- Payment:
- Shipping:
Inventory:2,876
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Product details
Overview
AT25FF041A-DWF 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 die-in-wafer form for embedded system boot code and firmware storage.
For engineers reviewing the AT25FF041A-DWF datasheet, AT25FF041A-DWF pinout, AT25FF041A-DWF application, or AT25FF041A-DWF equivalent, key selection criteria include multi-I/O bandwidth scalability, ultra-deep power-down current (7 nA), JEDEC-compliant SFDP support, OTP security register configuration, and -40°C to +105°C extended temperature operation.
Technical Context
The AT25FF041A-DWF implements a flexible SPI-compatible interface with hardware reset (JEDEC standard), volatile/non-volatile status registers, and nested erase/program suspend-resume capability. It supports both standard command addressing and indirect status register access via dedicated opcodes (e.g., 71h, 65h).
Its memory architecture features uniform 4-kB/32-kB/64-kB block erase, full-chip erase, byte/page programming (1–256 bytes), and sequential program mode. Protection schemes include individual block lock, global lock, and user-definable protected regions at memory start or end.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB) - sufficient for bootloader, firmware image, and configuration data in resource-constrained microcontrollers. |
| 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) - enables scalable throughput from 104 MB/s to >260 MB/s in XiP mode. |
| Max Clock Frequency | 133 MHz - supports high-speed read operations without external clock multiplication or PLLs. |
| Power Consumption | 7 nA Ultra-Deep Power-Down current - enables multi-year battery life in always-on IoT edge nodes. |
| Erase Endurance | 10k cycles at -40°C to +105°C - validated for automotive infotainment and industrial control firmware update cycles. |
| Data Retention | 10 years at -40°C to +105°C - meets long-term reliability requirements for sealed industrial modules. |
| Security Features | 1×128-byte factory UID + 3×128-byte OTP registers - supports secure device identity binding and immutable key provisioning. |
Pinout & Package
AT25FF041A-DWF is supplied as bare die in wafer form (DWF), with no discrete package or leadframe. Pin functionality follows standard 8-pin SOIC/SOP/DNF/WLCSP pinout mapping: VCC, GND, SI, SO, WP, HOLD/RESET, SCK, CS. Die-level I/O pads match this assignment per Renesas' DWF specification DS-AT25FF041A-184 Rev. N Page 7 and Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for command/address/data transfers; must be asserted before every SPI transaction. |
| SCK | Serial Clock | Master-generated clock synchronizing all SPI transfers; supports up to 133 MHz with defined setup/hold timing. |
| SI | Serial Input | Command, address, and write-data input path; supports standard/dual/quad mode depending on instruction. |
| SO | Serial Output | Read-data output path; operates in single/dual/quad mode per selected transfer protocol (e.g., 03h vs 6Bh vs EBh). |
| WP | Write Protect | Hardware-enabled protection for status registers and memory blocks; active-low, internally pulled up. |
| HOLD/RESET | Hold or Hardware Reset | Dual-function pin: hold active transfers when low; triggers JEDEC-standard reset when pulsed per Figure 22. |
| VCC | Supply Voltage | 1.65 V–3.6 V core I/O supply; supports direct connection to 1.8 V or 3.3 V rails without level-shifting. |
| GND | Ground Reference | Common return path for all digital and analog circuitry; requires low-impedance PCB plane for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O XiP Mode (1-4-4) | Enables execute-in-place from flash without copying to RAM, reducing boot latency and SRAM footprint in MCU-based systems. |
| Erase/Program Suspend-Resume | Allows background erase or program to pause for higher-priority reads, improving real-time responsiveness in multitasked firmware. |
| Serial Flash Discoverable Parameters (SFDP) | Provides standardized, software-readable JEDEC SFDP v1.6 table (5Ah command) for automatic driver configuration across platforms. |
| User-Configurable I/O Drive Strength | Permits tuning of SO/SI/WP/HOLD slew rates to match PCB trace impedance and reduce EMI in high-density layouts. |
| OTP Security Register Lock | Once locked (9Bh + 6Fh), OTP registers become permanently read-only, preventing runtime tampering with cryptographic keys or device IDs. |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Image |
|---|---|
Use Scenario: Storing field-upgradable firmware and calibration tables in programmable logic controllers operating continuously in harsh environments. IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic read latency and guaranteed 10-year data retention at +105°C. Use Value: Eliminates need for external EEPROM or backup battery; leverages 10k endurance cycles for over-the-air updates without wear leveling. |
Use Scenario: Hosting boot code and sensor fusion algorithms for camera/radar ECUs requiring fast cold-start execution. IC Role / Device Role / Timing Role: Quad I/O XiP-capable flash enabling direct code execution from memory, cutting boot time by >40% vs. copy-to-RAM methods. Use Value: Reduces BOM cost and board space versus external PSRAM + NOR combo; supports 133 MHz XiP read for real-time processing. |
| Medical Wearable Sensor Calibration | Smart Meter Secure Key Storage |
Use Scenario: Retaining factory-calibrated sensor offsets and patient-specific thresholds in battery-powered wearable monitors. IC Role / Device Role / Timing Role: Low-power serial flash with 7 nA UDPD current preserving charge during multi-month standby periods. Use Value: Extends battery life beyond 3 years on coin-cell power; OTP registers store immutable calibration signatures resistant to firmware corruption. |
Use Scenario: Securing AES keys and utility-specific authentication certificates in ANSI C12.22-compliant smart electricity meters. IC Role / Device Role / Timing Role: Tamper-resistant non-volatile storage with hardware write-protection and one-time programmable registers. Use Value: Meets IEC 62443-3-3 SL2 requirements via factory UID binding and OTP lock; prevents cloning or unauthorized firmware reflash. |
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, 1.7–1.95 V supply only, no XiP mode, 104 MHz max clock, no OTP registers. | Limited to 1.8 V systems; lacks execute-in-place and secure OTP - unsuitable for automotive or secure metering. | Select AT25FF041A-DWF when XiP, wide voltage, or OTP security are required; choose W25Q40EW only for cost-sensitive 1.8 V consumer designs. |
| Micron MT25QL04A | 4 Mbit, 1.7–2.0 V or 2.7–3.6 V dual-voltage option, supports XiP (1-4-4), 133 MHz, but no factory UID or OTP security registers. | Requires external UID generation; lacks hardware-enforced key immutability - adds software complexity for secure boot. | Prefer AT25FF041A-DWF for designs needing integrated UID + OTP; MT25QL04A fits where voltage flexibility matters more than built-in security. |
Compared with W25Q40EW and MT25QL04A, the AT25FF041A-DWF uniquely combines ultra-wide 1.65–3.6 V operation, factory UID, three OTP registers, and JEDEC SFDP - making it the only option among the three qualified for AEC-Q100 Grade 2 automotive and IEC 62443-3-3 SL2 industrial security use cases.
Availability
AT25FF041A-DWF is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot image hosting, and medical wearable sensor calibration requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for AT25FF041A-DWF 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power management, and memory solutions for automotive, industrial, and IoT markets.
The AT25FF041A-DWF belongs to Renesas' AT25FF family of high-reliability serial flash memories designed specifically for automotive-grade firmware storage, secure boot, and extended-temperature industrial applications.
FAQ
What is the package type of AT25FF041A-DWF?
The AT25FF041A-DWF is supplied as bare die in wafer form (DWF), not packaged in SOIC, DFN, or WLCSP. It is intended for chip-scale integration into custom substrates or module assemblies where wire bonding or flip-chip mounting is used. The die retains the same pinout and electrical behavior as its packaged variants per Renesas DS-AT25FF041A-184 Rev. N Page 7 and Table 1.
Does AT25FF041A-DWF support execute-in-place (XiP) operation?
Yes, the AT25FF041A-DWF supports quad I/O XiP operation using 1-4-4 and 0-4-4 protocols (commands EBh/E7h). This allows microcontrollers to execute code directly from flash without loading into RAM, reducing boot time and SRAM usage. XiP mode is fully supported across the full -40°C to +105°C temperature range and requires no external components.
How many one-time programmable (OTP) registers does AT25FF041A-DWF include?
The AT25FF041A-DWF includes three 128-byte One Time Programmable (OTP) security registers, plus one factory-programmed 128-byte unique identifier. Each OTP register can be individually programmed and permanently locked using the 9Bh program and 6Fh lock commands, ensuring cryptographic keys or device-specific data remain immutable after provisioning.
What is the ultra-deep power-down (UDPD) current of AT25FF041A-DWF?
The AT25FF041A-DWF draws 7 nA typical current in Ultra-Deep Power-Down (UDPD) mode (command 79h), as specified in DS-AT25FF041A-184 Rev. N Section 8.3. This ultra-low quiescent current enables multi-year battery operation in always-on IoT sensors and portable medical devices without compromising memory retention.
Is AT25FF041A-DWF compatible with JEDEC-standard hardware reset?
Yes, the AT25FF041A-DWF implements JEDEC-standard hardware reset functionality on the HOLD/RESET pin (Figure 22, DS-AT25FF041A-184 Rev. N). A 20 µs minimum low pulse on this pin resets internal state machines and status registers without requiring VCC cycling, enabling reliable recovery during brown-out or firmware hang conditions.
AT25FF041A-DWF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 2M x 2
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 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:
- Wafer
AT25FF041A-DWF FAQ
1.How can I place an order for AT25FF041A-DWF through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF041A-DWF 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-DWF reliable?
The price and inventory of AT25FF041A-DWF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25FF041A-DWF is usually 5 days.
3.What payment methods are accepted for AT25FF041A-DWF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF041A-DWF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF041A-DWF?
AT25FF041A-DWF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF041A-DWF 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-DWF?
For technical support, including AT25FF041A-DWF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF041A-DWF requirements.
6.How does Aetrix verify that AT25FF041A-DWF is sourced from the original manufacturer or authorized distributors?
All AT25FF041A-DWF 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-DWF meets industry standards.
7.What is the process for return or replacement of AT25FF041A-DWF?
All AT25FF041A-DWF units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF041A-DWF, 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-DWF part is unused and in its original packaging.
Return procedure for AT25FF041A-DWF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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