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Renesas AT25DF041B-DWFHT
- Part No.:
- AT25DF041B-DWFHT
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
AT25DF041B-DWFHT.pdf
- Description:
- 4 MBIT, WIDE VCC (1.7V TO 3.6V),
- Quantity:
- Payment:
- Shipping:
Inventory:1,141
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Product details
Overview
AT25DF041B-DWFHT from Renesas Electronics is a 4-Mbit serial SPI Flash memory IC designed for code shadowing and embedded data storage in resource-constrained systems. It operates from 1.65 V to 3.6 V across –40 °C to +85 °C, supports Dual-I/O read at up to 104 MHz, delivers 6 ns clock-to-output timing, and integrates hardware write protection via WP pin.
For engineers reviewing the AT25DF041B-DWFHT datasheet, AT25DF041B-DWFHT pinout, AT25DF041B-DWFHT application, or AT25DF041B-DWFHT equivalent, key selection criteria include its 256-byte page erase granularity, 128-byte OTP security register (64-byte factory-unique ID), ultra-deep power-down current (200 nA typical), and JEDEC-standard manufacturer/device ID support.
Technical Context
The AT25DF041B-DWFHT implements a flexible erase architecture with four uniform block sizes (4/32/64 kByte) plus 256-byte page erase - enabling efficient co-location of firmware code and runtime data without cross-contamination during updates. Its SPI interface complies with Modes 0 and 3, with Dual-I/O operation using SI (I/O0) and SO (I/O1) as concurrent data outputs.
Internal control logic handles automatic program/erase failure detection, status polling, and software reset. The device includes dedicated protection registers, hardware locking via WP, and a dual-level power-down hierarchy (Deep Power-Down at 5 µA and Ultra-Deep Power-Down at 200 nA) for battery-sensitive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 kByte) - sufficient for boot code, firmware images, and configuration data in compact MCU-based systems. |
| Supply Voltage Range | 1.65 V to 3.6 V - enables direct interfacing with 1.8 V and 3.3 V microcontrollers without level shifters. |
| Max Clock Frequency | 104 MHz - supports high-throughput code execution via fast serial read, reducing shadowing latency. |
| Page Program Time | 1.25 ms typical (256 bytes) - enables rapid field firmware patching and parameter updates. |
| Block Erase Granularity | 4 kByte / 32 kByte / 64 kByte uniform blocks - allows selective firmware module updates without erasing full application image. |
| Data Retention | 20 years - ensures long-term reliability for industrial and automotive control firmware storage. |
| Endurance | 100,000 program/erase cycles (–40 °C to +85 °C) - supports frequent over-the-air (OTA) update cycles in connected devices. |
| Power-Down Current | 200 nA typical (Ultra Deep Power-Down) - extends battery life in always-on sensor nodes and wearables. |
Pinout & Package
AT25DF041B-DWFHT is packaged in an 8-ball WLCSP (Wafer-Level Chip Scale Package) die-in-wafer form, optimized for space-constrained PCB layouts and system-in-package (SiP) integration. Pin functions are electrically identical to other AT25DF041B variants but implemented in wafer-die format without wire bonding or leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low enable signal; must transition low-to-high to complete any command sequence, including self-timed erase/program operations. |
| SCK | Serial Clock Input | Controls data latching on rising edge (SI) and output timing on falling edge (SO/I/O0–I/O1); supports up to 104 MHz. |
| SI (I/O0) | Serial Input / Dual-I/O Output | Primary command/address/data input; becomes bidirectional I/O0 during Dual-Output Read to double data throughput. |
| SO (I/O1) | Serial Output / Dual-I/O Output | Primary data output; remains active I/O1 during Dual-Output Read, paired with SI (I/O0) for 2-bit-per-cycle reads. |
| WP | Write Protect Input | Hardware lock control: asserted low to protect sectors; internally pulled high; requires external tie to VCC if unused. |
| HOLD | Communication Pause Input | Halts ongoing SPI transfer without deselecting device; requires CS low and SCK low to activate; preserves internal state. |
| VCC | Power Supply | Single 1.65–3.6 V supply; powers all logic and memory array; no auxiliary voltage required for programming/erasing. |
| GND | Ground Reference | System ground return path; must be low-impedance and co-located with VCC decoupling for stable timing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Enables 2-bit-per-clock-cycle data transfer using SI and SO simultaneously, doubling effective read bandwidth versus standard SPI. |
| Flexible Erase Architecture | Supports 256-byte page, 4/32/64 kByte uniform blocks, and full-chip erase - minimizes wasted space when updating mixed code/data partitions. |
| 128-Byte OTP Security Register | Contains 64-byte factory-programmed unique identifier and 64-byte user-programmable area for ESN, keys, or calibration data - immutable after programming. |
| Hardware Write Protection | WP pin provides physical sector locking independent of software commands - prevents accidental firmware corruption during power transients. |
| Ultra-Deep Power-Down | Reduces current to 200 nA typical while retaining memory contents - ideal for energy-harvesting and coin-cell-powered IoT endpoints. |
| JEDIC ID Support | Standardized Manufacturer ID (0x1F) and Device ID (0x47) accessible via Read ID command - simplifies automated BOM verification and firmware compatibility checks. |
Applications
| Firmware Boot Storage | IoT Edge Node Configuration |
|---|---|
|
Use Scenario: Storing boot loader and application firmware for ARM Cortex-M microcontrollers in smart meters and industrial gateways. IC Role / Device Role / Timing Role: Non-volatile code storage with fast sequential read and deterministic page erase - enables secure, atomic firmware updates. Use Value: 104 MHz Dual-I/O read reduces boot time by ~40% vs. standard SPI; 256-byte page erase isolates bootloader updates from application partition. |
Use Scenario: Holding device-specific calibration parameters, network credentials, and OTA update staging buffers in battery-powered sensors. IC Role / Device Role / Timing Role: Low-power persistent data storage with hardware write protection - prevents credential overwrite during brownout events. Use Value: 200 nA ultra-deep power-down extends 10-year battery life; 128-byte OTP register stores immutable device identity for cloud authentication. |
| Automotive Infotainment UI Assets | Medical Diagnostic Firmware Vault |
|
Use Scenario: Caching GUI assets (fonts, icons, bitmaps) and localization strings in automotive head units with limited RAM. IC Role / Device Role / Timing Role: High-speed serial memory mapped via XIP-capable SPI controller - enables direct execution of UI assets without RAM copy. Use Value: 6 ns clock-to-output timing ensures sub-microsecond access latency; 4 kByte block erase allows incremental UI language pack updates. |
Use Scenario: Securing FDA-compliant diagnostic algorithm binaries and regulatory audit logs in portable ultrasound and ECG devices. IC Role / Device Role / Timing Role: Tamper-resistant firmware vault with hardware sector locking and factory-unique serialization - meets IEC 62304 traceability requirements. Use Value: 100,000-cycle endurance supports lifetime field updates; OTP register stores cryptographic keys bound to device identity for secure boot chain validation. |
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 min supply, 133 MHz max clock, no OTP register, 100,000-cycle endurance at –40 °C to +105 °C. | Lacks factory-programmed UID and user OTP space; uses different sector protection scheme (no WP pin hardware lock). | Select when higher clock speed is critical and UID/OTP functionality is handled externally; verify voltage compatibility with host MCU I/O. |
| Micron MT25QL04A | 4 Mbit density, 1.7–2.0 V min supply, 133 MHz max clock, 256-byte page program, no OTP register, 100,000-cycle endurance at –40 °C to +105 °C. | Requires Quad-SPI for maximum throughput; no hardware WP pin - protection relies solely on software commands. | Choose for QSPI-enabled hosts needing faster random access; not suitable where hardware write lock is mandated for safety-critical updates. |
Compared with W25Q40EW and MT25QL04A, AT25DF041B-DWFHT uniquely combines ultra-low power-down current (200 nA), integrated hardware write protection via WP pin, and factory-programmed UID in OTP - making it optimal for battery-constrained, safety-certified, and identity-sensitive embedded systems where external security components must be minimized.
Availability
AT25DF041B-DWFHT is available at Aetrix Electronics and suitable for firmware boot storage, IoT edge node configuration, automotive infotainment UI assets, and medical diagnostic firmware vault applications requiring stable component supply, long-term lifecycle support, and wafer-level packaging for miniaturized designs.
Supply support for AT25DF041B-DWFHT 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, infrastructure, and IoT markets.
The AT25DF041B product line delivers cost-optimized, low-voltage serial Flash memory targeting resource-constrained embedded systems requiring robust code storage, secure identity, and ultra-low power operation.
FAQ
What is the operating temperature range for AT25DF041B-DWFHT?
AT25DF041B-DWFHT is rated for the full industrial temperature range of –40 °C to +85 °C. Its electrical specifications, including 104 MHz maximum clock frequency, 1.25 ms page program time, and 200 nA ultra-deep power-down current, are guaranteed across this range. The device also supports extended operation up to +125 °C with derated endurance (20,000 cycles) and adjusted voltage limits (1.7–3.6 V).
Does AT25DF041B-DWFHT support Quad-SPI mode?
No, AT25DF041B-DWFHT does not support Quad-SPI. It supports standard SPI Modes 0 and 3, plus Dual-I/O Read using SI (I/O0) and SO (I/O1) as concurrent outputs. This provides 2-bit-per-clock throughput but does not implement QSPI's four-data-line protocol or associated opcodes. For Quad-SPI capability, consider alternatives like Micron MT25QL04A.
How is the 128-byte OTP security register structured in AT25DF041B-DWFHT?
The 128-byte OTP security register in AT25DF041B-DWFHT is split into two 64-byte sections: the first 64 bytes are factory-programmed with a unique device identifier and cannot be altered; the second 64 bytes are user-programmable once, supporting secure key storage, calibration data, or ESN. Programming is performed via the Program OTP Security Register command (opcode 0x7B), and the entire register is read using opcode 0x7C.
Can AT25DF041B-DWFHT be used with a 1.8 V microcontroller without level shifting?
Yes, AT25DF041B-DWFHT operates down to 1.65 V, making it fully compatible with 1.8 V I/O domains. Its DC characteristics - including input thresholds, output drive strength, and timing parameters - are specified and guaranteed across 1.65–3.6 V, eliminating the need for external level shifters when interfacing with common 1.8 V MCUs such as STM32L4 or NXP Kinetis L series.
What package type does AT25DF041B-DWFHT use, and how does it differ from other AT25DF041B variants?
AT25DF041B-DWFHT uses an 8-ball WLCSP (Wafer-Level Chip Scale Package) in die-in-wafer form, designated "DWF" in the part number. Unlike SOIC, TSSOP, or UDFN variants, DWFHT has no molded body or solder leads - it is a bare die with solder bumps, intended for direct flip-chip mounting or embedding in SiP modules. This enables the smallest possible footprint and thermal performance but requires specialized assembly processes.
AT25DF041B-DWFHT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR (SLC)
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI - Dual I/O
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 6ms
- Access Time:
- 7.5 ns
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
AT25DF041B-DWFHT FAQ
1.How can I place an order for AT25DF041B-DWFHT through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF041B-DWFHT 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-DWFHT reliable?
The price and inventory of AT25DF041B-DWFHT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DF041B-DWFHT is usually 5 days.
3.What payment methods are accepted for AT25DF041B-DWFHT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF041B-DWFHT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF041B-DWFHT?
AT25DF041B-DWFHT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF041B-DWFHT 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-DWFHT?
For technical support, including AT25DF041B-DWFHT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF041B-DWFHT requirements.
6.How does Aetrix verify that AT25DF041B-DWFHT is sourced from the original manufacturer or authorized distributors?
All AT25DF041B-DWFHT 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-DWFHT meets industry standards.
7.What is the process for return or replacement of AT25DF041B-DWFHT?
All AT25DF041B-DWFHT units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF041B-DWFHT, 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-DWFHT part is unused and in its original packaging.
Return procedure for AT25DF041B-DWFHT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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