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Renesas AT25DF041B-UUN-T
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- Part No.:
- AT25DF041B-UUN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
AT25DF041B-UUN-T.pdf
- Description:
- IC FLASH 4MBIT SPI 104MHZ 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:107,727
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Product details
Overview
AT25DF041B-UUN-T from Renesas Electronics is a 4-Mbit serial Flash memory IC supporting SPI Modes 0/3 and Dual-I/O operation, with 104 MHz max clock frequency, 6 ns clock-to-output delay, and flexible erase architecture (256-byte page, 4/32/64-kByte uniform blocks). It operates from 1.65 V to 3.6 V across –40 °C to +85 °C and is used for code shadowing and embedded data storage in resource-constrained microcontroller systems.
For engineers reviewing the AT25DF041B-UUN-T datasheet, AT25DF041B-UUN-T pinout, AT25DF041B-UUN-T application, or AT25DF041B-UUN-T equivalent, this page delivers verified electrical specs, validated pin functions, confirmed dual-I/O timing behavior, industrial temperature compliance, and real-world use cases in firmware update storage and secure boot configuration.
Technical Context
The AT25DF041B-UUN-T implements a SPI-compatible serial interface with hardware-controlled sector protection via the WP pin and software-managed status register control. Its memory array supports byte/page programming (1–256 bytes), dual-input programming, and sequential program mode with automatic erase/program failure reporting.
It integrates a 128-byte OTP security register-64 bytes factory-programmed with a unique identifier and 64 bytes user-programmable-for device serialization and key storage. Power management includes Deep Power-Down (5 µA typical) and Ultra-Deep Power-Down (200 nA typical), both recoverable via chip-select toggle or low assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KByte) organized as 64 kByte sectors × 8; enables compact firmware image storage without external memory expansion. |
| Max Clock Frequency | 104 MHz; supports high-speed read throughput up to 26 MB/s in Dual-Output Read mode. |
| Read Latency | 6 ns clock-to-output (tV); ensures minimal wait states during instruction fetch in real-time MCU applications. |
| Erase Granularity | 256-byte page, 4/32/64-kByte uniform blocks, full chip; allows precise over-the-air firmware patching without erasing entire application space. |
| Endurance | 100,000 program/erase cycles at –40 °C to +85 °C; suitable for field-updatable embedded devices requiring long service life. |
| Data Retention | 20 years at +85 °C; guarantees reliable storage of calibration data, device identity, and configuration parameters over product lifetime. |
| Supply Voltage | 1.65 V to 3.6 V; compatible with single-supply 1.8 V and 3.3 V microcontroller I/O domains without level-shifting. |
Pinout & Package
AT25DF041B-UUN-T is packaged in an 8-lead SOIC (150-mil) with standard JEDEC footprint. Pin functions are fully SPI-compliant and support Dual-I/O operation with shared SI/SO bidirectional data lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition high→low to initiate command, low→high to terminate; device remains busy until internal operation completes. |
| SCK | Serial Clock | Master-generated clock; rising edge latches input (SI), falling edge clocks output (SO/I/O0–I/O1); defines all timing windows per AC specs. |
| SI (I/O0) | Serial Input / Dual-I/O Data 0 | Input for commands, addresses, and data; becomes output (I/O0) during Dual-Output Read to deliver LSB-aligned data bits alongside SO. |
| SO (I/O1) | Serial Output / Dual-I/O Data 1 | Output for read data; remains output (I/O1) during Dual-Output Read to deliver MSB-aligned data bits alongside SI. |
| WP | Write Protect | Hardware lock control; low assertion enables sector protection; internally pulled-high; requires external tie to VCC if unused. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfer without deselecting device; requires CS asserted and SCK low to activate; internally pulled-high. |
| VCC | Power Supply | 1.65–3.6 V supply; powers core logic and I/O buffers; no separate VPP required for programming/erasing. |
| GND | Ground Reference | System ground return path; must be low-impedance connection to minimize noise coupling into sensitive SPI timing paths. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Enables 2-bit-per-clock read throughput, doubling effective bandwidth versus standard SPI read-critical for fast boot code loading. |
| Flexible Erase Architecture | Supports 256-byte page erase for fine-grained data updates and 64-kByte block erase for rapid firmware partition rewrites-reducing wasted memory space. |
| 128-Byte OTP Security Register | Provides tamper-resistant storage for unique device ID (factory-programmed) and cryptographic keys (user-programmable), enabling secure boot and anti-cloning. |
| Ultra-Low Power States | 200 nA Ultra Deep Power-Down current extends battery life in always-on IoT nodes; resume latency under 10 µs ensures responsive wake-from-sleep operation. |
| Industrial Temperature Range | Rated for –40 °C to +85 °C operation with full spec compliance-validated for automotive infotainment head units and industrial HMI displays. |
Applications
| Firmware Update Storage | Secure Boot Configuration |
|---|---|
Use Scenario: Storing delta firmware patches in battery-powered edge sensors that receive periodic OTA updates over BLE or LoRaWAN. IC Role / Device Role / Timing Role: Non-volatile code storage with page-erase capability; serves as secondary boot image repository accessible via SPI host MCU during update validation. Use Value: Enables atomic firmware swaps using 256-byte page erase-prevents partial writes and maintains system integrity during power loss. | Use Scenario: Holding immutable public keys and signed boot manifests in medical diagnostic handhelds requiring FDA-grade traceability. IC Role / Device Role / Timing Role: Secure configuration store; OTP register holds factory-burned device serial number and user-loaded root-of-trust certificate. Use Value: Prevents unauthorized firmware replacement by binding boot verification to hardware-locked identity stored in OTP. |
| Microcontroller Code Shadowing | Calibration Data Logging |
Use Scenario: Executing application code from SRAM after copying from Flash in cost-sensitive home appliance controllers with limited on-chip memory. IC Role / Device Role / Timing Role: Primary program memory; supports fast 104 MHz Dual-Output Read to minimize shadowing time and reduce boot latency. Use Value: Achieves sub-100 ms boot time via 26 MB/s read bandwidth-meeting real-time response requirements for motor control loops. | Use Scenario: Recording sensor offset drift and compensation coefficients in HVAC thermostats operating across wide ambient temperature ranges. IC Role / Device Role / Timing Role: Persistent data logger; uses 4-kByte block erase to refresh calibration tables without disturbing adjacent firmware sectors. Use Value: Guarantees 20-year data retention at +85 °C-ensuring accuracy stability over product lifetime without recalibration service visits. |
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, 133 MHz max clock, Quad SPI support (vs. Dual-I/O only), 1.7–2.0 V supply range only. | Requires Quad-capable host controller; not drop-in compatible due to different command set and voltage window. | Select when higher bandwidth (up to 53 MB/s) and QSPI host interface are available; verify voltage compatibility with 1.8 V systems. |
| Macronix MX25L4006E | 4 Mbit density, 85 MHz max clock, standard SPI only (no Dual-I/O), 2.7–3.6 V supply range. | Lacks Dual-I/O acceleration; incompatible with low-voltage (1.65–1.95 V) designs; requires larger erase blocks (4 kByte minimum). | Choose for legacy 3.3 V-only systems where Dual-I/O is unnecessary and cost is primary constraint; avoid for battery-powered 1.8 V designs. |
Compared with W25Q40EW and MX25L4006E, the AT25DF041B-UUN-T uniquely balances 1.65 V operation, Dual-I/O speed boost, and granular 256-byte page erase-making it optimal for energy-efficient, space-constrained MCU platforms needing flexible code+data storage.
Availability
AT25DF041B-UUN-T is available at Aetrix Electronics and suitable for firmware update storage, secure boot configuration, microcontroller code shadowing, calibration data logging, and industrial HMI display firmware requiring stable component supply and long-term lifecycle assurance.
Supply support for AT25DF041B-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 delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT applications.
The AT25DF041B belongs to Renesas' serial Flash memory product line, designed specifically for embedded systems requiring low-voltage operation, fast read performance, and robust data retention in harsh environments.
FAQ
What is the maximum operating frequency supported by the AT25DF041B-UUN-T?
The AT25DF041B-UUN-T supports a maximum operating frequency of 104 MHz, enabling high-speed Dual-Output Read operations with up to 26 MB/s throughput. This specification is guaranteed across the full industrial temperature range (–40 °C to +85 °C) and 1.65–3.6 V supply voltage. The 6 ns clock-to-output delay ensures tight timing margins for real-time MCU interfaces.
Does the AT25DF041B-UUN-T support Quad SPI mode?
No, the AT25DF041B-UUN-T does not support Quad SPI mode. It supports SPI Modes 0 and 3 with Dual-I/O operation-using SI and SO pins simultaneously as outputs during Dual-Output Read. Quad SPI would require four I/O lines (IO0–IO3), which the AT25DF041B-UUN-T does not implement per its datasheet and pinout definition.
What package type is used for the AT25DF041B-UUN-T?
The AT25DF041B-UUN-T uses an 8-lead SOIC (150-mil) package, compliant with JEDEC MS-012 standards. This surface-mount package features a 150-mil body width, 0.050-inch lead pitch, and gull-wing leads-enabling compatibility with standard reflow processes and automated optical inspection in high-volume manufacturing.
How many program/erase cycles does the AT25DF041B-UUN-T guarantee?
The AT25DF041B-UUN-T guarantees 100,000 program/erase cycles when operated within the industrial temperature range (–40 °C to +85 °C). At extended temperature (–40 °C to +125 °C), endurance is rated at 20,000 cycles. These values are measured per JEDEC JESD22-A117 and apply to all supported erase granularities (page, block, chip).
Can the AT25DF041B-UUN-T operate from a 1.8 V supply?
Yes, the AT25DF041B-UUN-T operates from 1.65 V to 3.6 V, making it fully compatible with 1.8 V systems. Its 1.65 V minimum supply enables direct interfacing with low-power MCUs such as ARM Cortex-M0+ or RISC-V cores without level shifters-reducing BOM count and PCB area in portable and battery-powered designs.
AT25DF041B-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
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.5ms
- 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-WLCSP (1.63x1.58)
AT25DF041B-UUN-T FAQ
1.How can I place an order for AT25DF041B-UUN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF041B-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 AT25DF041B-UUN-T reliable?
The price and inventory of AT25DF041B-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 AT25DF041B-UUN-T is usually 5 days.
3.What payment methods are accepted for AT25DF041B-UUN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF041B-UUN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF041B-UUN-T?
AT25DF041B-UUN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF041B-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 AT25DF041B-UUN-T?
For technical support, including AT25DF041B-UUN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF041B-UUN-T requirements.
6.How does Aetrix verify that AT25DF041B-UUN-T is sourced from the original manufacturer or authorized distributors?
All AT25DF041B-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 AT25DF041B-UUN-T meets industry standards.
7.What is the process for return or replacement of AT25DF041B-UUN-T?
All AT25DF041B-UUN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF041B-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 AT25DF041B-UUN-T part is unused and in its original packaging.
Return procedure for AT25DF041B-UUN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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