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Renesas AT25DF011-DWFHT
- Part No.:
- AT25DF011-DWFHT
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
AT25DF011-DWFHT.pdf
- Description:
- 1 MBIT, WIDE VCC (1.7V TO 3.6V),
- Quantity:
- Payment:
- Shipping:
Inventory:3,048
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Product details
Overview
AT25DF011-DWFHT from Renesas Electronics is a 1-Mbit SPI serial flash memory IC designed for code shadowing and embedded data storage in low-voltage systems. It operates from 1.65 V to 3.6 V, supports SPI Modes 0/3 and Dual-Output Read, delivers 104 MHz max clock frequency with 6 ns clock-to-output delay, and features flexible erase granularity (256-byte page, 4-kB/32-kB blocks, full chip) for mixed code+data applications in industrial and consumer electronics.
For engineers reviewing the AT25DF011-DWFHT datasheet, AT25DF011-DWFHT pinout, AT25DF011-DWFHT application, or AT25DF011-DWFHT equivalent, key selection criteria include its ultra-low deep power-down current (200 nA), OTP security register (128 bytes), hardware write protection via WP pin, and support for high-speed dual-output read at up to 50 MHz - all critical for battery-powered and secure firmware storage designs.
Technical Context
The AT25DF011-DWFHT implements a dedicated SPI interface with dual I/O capability (SI/I/O0 and SO/I/O1 active during Dual-Output Read), enabling 2-bit-per-clock data transfer. Its command set includes standardized opcodes (e.g., 03h for standard read, 3Bh for dual-output read, 20h/52h for block erase) and supports both software- and hardware-based protection using the WP pin and status register bits.
Internally, the device uses a segmented memory architecture with uniform 4-kB and 32-kB erase blocks plus 256-byte programmable pages, allowing efficient allocation of code and data segments without cross-contamination. The integrated OTP security register contains 64 bytes factory-programmed with a unique identifier and 64 bytes user-programmable for ESN or key storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (128 KBytes) - sufficient for boot code, firmware images, and configuration data in space-constrained embedded 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 shifting. |
| Max Clock Frequency | 104 MHz - supports high-throughput read operations for real-time code execution from flash. |
| Clock-to-Output Delay | 6 ns - ensures tight timing margins in high-speed SPI master designs, reducing read latency. |
| Erase Granularity | 256-byte page / 4-kB block / 32-kB block / full chip - allows precise updates of firmware sections without erasing unrelated data. |
| Power-Down Current | 200 nA ultra-deep power-down (typical) - extends battery life in always-on or infrequently accessed storage applications. |
| Endurance & Retention | 100,000 program/erase cycles at -40°C to +85°C; 20-year data retention - meets long-life requirements for industrial firmware storage. |
Pinout & Package
AT25DF011-DWFHT is packaged in an 8-pad Ultra Thin DFN (2 mm × 3 mm × 0.6 mm), RoHS-compliant, lead-free package optimized for compact PCB layouts and thermal performance in portable and space-sensitive designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable signal; must be asserted before any command and held low during full transaction - controls device selection on shared SPI bus. |
| SCK | Serial clock input | Drives all timing; data latched on rising edge, output shifted on falling edge - compatible with SPI Modes 0 and 3 only. |
| SI (I/O0) | Serial input / dual-output data line | Carries commands, addresses, and input data; becomes bidirectional I/O0 during Dual-Output Read to double throughput. |
| SO (I/O1) | Serial output / dual-output data line | Outputs read data; remains active as I/O1 during Dual-Output Read - paired with SI to deliver two bits per SCK cycle. |
| WP | Hardware write protect input | Low-active pin that locks protected sectors when BPL bit is set - provides tamper-resistant firmware protection independent of software state. |
| HOLD | Communication pause input | Halts ongoing SPI transfers without deselecting device or resetting internal state - useful for interrupt handling in real-time systems. |
| VCC | Power supply | Single 1.65–3.6 V rail powers all logic and memory functions - eliminates need for charge pumps or auxiliary supplies. |
| GND | Ground reference | Common return path for VCC and all I/O signals - requires low-impedance connection to minimize noise coupling into sensitive flash operations. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Output Read mode | Enables 2-bit-per-clock data transfer using SI and SO pins simultaneously, doubling effective read bandwidth over standard SPI read (03h). |
| Flexible erase architecture | Supports 256-byte page, 4-kB block, 32-kB block, and full-chip erase - minimizes wasted space when updating partial firmware or logging data. |
| OTP Security Register | 128-byte one-time programmable area with 64-byte factory-unique ID and 64-byte user field - enables secure device serialization and key binding. |
| Ultra-deep power-down | 200 nA typical quiescent current with fast wake-up - ideal for energy harvesting and battery-backed IoT nodes requiring years of standby life. |
| Hardware write protection | WP pin directly controls sector locking independent of status register settings - prevents accidental or malicious firmware overwrite during power transients. |
Applications
| Secure Firmware Storage | Industrial Sensor Node Data Logging |
|---|---|
Use Scenario: Storing signed bootloader and application firmware in medical diagnostic equipment where integrity and anti-tampering are mandated. IC Role / Device Role / Timing Role: Non-volatile code storage with hardware write protection and OTP-based cryptographic key binding. Use Value: Prevents unauthorized firmware modification via WP pin lock and enables device authentication using factory-programmed unique ID. | Use Scenario: Recording calibrated sensor readings and event timestamps in battery-powered environmental monitors deployed for multi-year field operation. IC Role / Device Role / Timing Role: Low-power data buffer with granular 256-byte page erase - allows appending new logs without erasing historical calibration data. Use Value: 200 nA ultra-deep power-down current extends battery life beyond 5 years; 100K endurance supports daily log updates over full product lifetime. |
| Consumer IoT Gateway Boot Memory | Automotive Infotainment Configuration Storage |
Use Scenario: Hosting boot code and network stack binaries in Wi-Fi/BLE gateways requiring fast startup and reliable OTA update rollback. IC Role / Device Role / Timing Role: High-speed SPI flash with 104 MHz clock and 6 ns tV - reduces boot time by enabling rapid code shadowing to RAM. Use Value: Dual-Output Read (3Bh) achieves 50 MHz effective throughput, cutting read latency by ~40% versus standard 03h read at same clock rate. | Use Scenario: Storing UI themes, audio profiles, and vehicle-specific calibration maps in automotive head units operating across -40°C to +125°C. IC Role / Device Role / Timing Role: AEC-Q100 qualified (per Renesas documentation) serial flash with extended temperature support and robust erase/write cycling. Use Value: Rated for 20,000 P/E cycles at -40°C to +125°C and 20-year data retention - ensures reliability over full vehicle service life. |
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 density, 104 MHz max clock, Quad SPI support (not Dual-Output), no OTP register | Larger capacity for complex firmware; lacks hardware-secured serialization capability | Select when higher density and QSPI interface are required, but OTP-based security is not needed. |
| Macronix MX25L1006EM1I-12G | 1-Mbit density, 86 MHz max clock, standard SPI only (no Dual-Output), 500 nA deep power-down | Lower speed and no dual-I/O; slightly higher power-down current impacts ultra-low-power designs | Choose for cost-sensitive applications where 104 MHz timing and 200 nA power-down are non-critical. |
Compared with W25Q80DVSSIG and MX25L1006EM1I-12G, the AT25DF011-DWFHT uniquely combines 1-Mbit density with Dual-Output Read, 200 nA ultra-deep power-down, and factory-programmed OTP ID - making it optimal for secure, low-power, space-constrained embedded firmware storage where throughput and tamper resistance are prioritized over raw capacity or quad-interface flexibility.
Availability
AT25DF011-DWFHT is available at Aetrix Electronics and suitable for industrial control systems, battery-powered IoT endpoints, automotive infotainment modules, and medical diagnostics equipment requiring stable component supply and long-term lifecycle support.
Supply support for AT25DF011-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 applications.
The AT25DF011-DWFHT belongs to Renesas' AT25DF family of serial flash memories, engineered specifically for reliable, low-voltage, high-speed code and data storage in resource-constrained embedded systems.
FAQ
What is the maximum operating frequency supported by the AT25DF011-DWFHT?
The AT25DF011-DWFHT supports a maximum operating frequency of 104 MHz for standard read and erase/program commands. For Dual-Output Read (opcode 3Bh), the maximum clock frequency is 50 MHz. These values are specified across the full industrial temperature range (-40°C to +85°C) and voltage range (1.65 V to 3.6 V), ensuring consistent high-speed performance in demanding embedded environments. The AT25DF011-DWFHT maintains timing compliance under these conditions without external buffering or clock conditioning.
Does the AT25DF011-DWFHT support hardware write protection, and how is it implemented?
Yes, the AT25DF011-DWFHT supports hardware write protection via the dedicated WP (Write Protect) pin, which is active-low. When the WP pin is driven low and the Block Protection Lock (BPL) bit in the status register is set, selected memory sectors become permanently locked against program and erase operations - even if software commands attempt modification. This hardware-enforced lock persists through power cycles and provides tamper-resistant firmware protection independent of software state. The AT25DF011-DWFHT datasheet confirms this behavior in Section 9.4.
What are the erase block sizes available on the AT25DF011-DWFHT?
The AT25DF011-DWFHT offers four distinct erase granularities: 256-byte page erase (0x81 opcode), uniform 4-kByte block erase (0x20), uniform 32-kByte block erase (0x52), and full chip erase (0x60 or 0xC7). This hierarchical architecture allows precise memory management - for example, updating a single configuration parameter via page erase avoids disturbing adjacent firmware code stored in neighboring 4-kB blocks. All erase operations are internally self-timed and verified, with typical times of 1.5 ms (page), 50 ms (4-kB), and 350 ms (32-kB).
How does the Dual-Output Read feature improve performance in the AT25DF011-DWFHT?
The Dual-Output Read feature in the AT25DF011-DWFHT uses both the SI (I/O0) and SO (I/O1) pins as simultaneous data outputs during opcode 3Bh transfers, delivering two bits per SCK clock cycle instead of one. This effectively doubles read throughput compared to standard SPI Read (03h) at the same clock frequency - for example, achieving ~50 MB/s effective bandwidth at 50 MHz SCK. The AT25DF011-DWFHT implements this without requiring additional pins or protocol changes beyond enabling the mode, making it a drop-in performance upgrade for existing SPI host designs supporting dual-I/O commands.
What is the purpose and structure of the OTP Security Register in the AT25DF011-DWFHT?
The AT25DF011-DWFHT includes a 128-byte One-Time Programmable (OTP) Security Register divided into two 64-byte fields: the first is factory-programmed with a unique device identifier (ESN), and the second is user-programmable for keys, certificates, or custom serialization data. Once written, OTP locations cannot be altered - providing immutable identity and secure storage for cryptographic material. This register is accessed via dedicated Program OTP (0x42) and Read OTP (0x4B) commands, and its use is documented in Section 10 of the AT25DF011-DWFHT datasheet for secure boot and device authentication workflows.
AT25DF011-DWFHT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR (SLC)
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- SPI - Dual I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 12µs, 5ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
AT25DF011-DWFHT FAQ
1.How can I place an order for AT25DF011-DWFHT through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF011-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 AT25DF011-DWFHT reliable?
The price and inventory of AT25DF011-DWFHT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DF011-DWFHT is usually 5 days.
3.What payment methods are accepted for AT25DF011-DWFHT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF011-DWFHT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF011-DWFHT?
AT25DF011-DWFHT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF011-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 AT25DF011-DWFHT?
For technical support, including AT25DF011-DWFHT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF011-DWFHT requirements.
6.How does Aetrix verify that AT25DF011-DWFHT is sourced from the original manufacturer or authorized distributors?
All AT25DF011-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 AT25DF011-DWFHT meets industry standards.
7.What is the process for return or replacement of AT25DF011-DWFHT?
All AT25DF011-DWFHT units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF011-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 AT25DF011-DWFHT part is unused and in its original packaging.
Return procedure for AT25DF011-DWFHT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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