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Renesas AT25DF021A-MHN-T
- Part No.:
- AT25DF021A-MHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT25DF021A-MHN-T.pdf
- Description:
- IC FLASH 2MBIT SPI 104MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,838
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Product details
Overview
AT25DF021A-MHN-T from Renesas Electronics is a 2-Mbit serial SPI Flash memory IC supporting Dual-I/O operation, 104 MHz max clock frequency, 6 ns clock-to-output delay, and flexible erase architecture (256-byte page, 4/32/64-kByte blocks) for embedded code + data storage in industrial and consumer systems.
For engineers reviewing the AT25DF021A-MHN-T datasheet, AT25DF021A-MHN-T pinout, AT25DF021A-MHN-T application, or AT25DF021A-MHN-T equivalent, key selection criteria include SPI Mode 0/3 compatibility, ultra-low deep power-down current (200 nA), OTP security register (128 bytes), JEDEC-standard ID read, and industrial temperature support (–40°C to +125°C).
Technical Context
The AT25DF021A-MHN-T implements a dedicated SPI interface with hardware-controlled write protection via WP pin and HOLD pin for communication suspension. It supports dual-output read mode using SI (I/O0) and SO (I/O1) pins simultaneously, doubling effective data throughput versus standard single-I/O reads.
Its memory architecture features uniform sectoring with 4-kByte, 32-kByte, and 64-kByte erase blocks plus 256-byte page erase - enabling efficient code partitioning and data logging without over-erasure. The integrated status register provides real-time program/erase completion and failure reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 bytes), sufficient for firmware images and configuration data in resource-constrained microcontrollers. |
| Supply Voltage Range | 1.65 V – 3.6 V (–40°C to +85°C); 1.7 V – 3.6 V (–40°C to +125°C) - enables direct interfacing with 1.8 V and 3.3 V logic without level shifters. |
| Max Clock Frequency | 104 MHz - delivers up to 13 MB/s read bandwidth in Dual-Output mode, accelerating boot time and OTA updates. |
| Page Program Time | 1.25 ms typical (256 bytes) - enables rapid field updates of small firmware patches or parameter sets. |
| Erase Granularity | 256-byte page, 4-kByte, 32-kByte, 64-kByte, and full-chip erase - allows precise memory management for mixed code/data applications. |
| Power Consumption | 200 nA ultra-deep power-down current (typical) - extends battery life in always-on IoT edge nodes during sleep cycles. |
| Data Retention | 20 years - ensures long-term reliability for firmware storage in automotive and industrial control units. |
Pinout & Package
AT25DF021A-MHN-T is packaged in an 8-lead SOIC (150-mil) with standard JEDEC footprint and pinout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition high-to-low to initiate commands and low-to-high to terminate operations - critical for multi-device SPI bus arbitration. |
| SCK | Serial Clock | Master-generated clock; rising edge latches input (SI), falling edge clocks output (SO) - defines timing margins for reliable high-speed communication. |
| SI (I/O0) | Serial Input / Dual-I/O Data Line 0 | Command/address/data input in standard mode; becomes bidirectional I/O0 in Dual-I/O read - enables 2-bit-per-cycle data transfer for bandwidth-critical applications. |
| SO (I/O1) | Serial Output / Dual-I/O Data Line 1 | Data output in standard mode; remains I/O1 in Dual-I/O read - pairs with SI to deliver simultaneous bit-streams on each SCK falling edge. |
| WP | Write Protect | Hardware lock control (active-low); when asserted, prevents status register writes and sector protection changes - adds tamper-resistant firmware update safeguards. |
| HOLD | Hold | Pauses ongoing SPI transfers without deselecting device (CS remains low); requires SCK low before assertion - preserves bus state during interrupt servicing or priority task switching. |
| VCC | Power Supply | Single 1.65–3.6 V supply powers all internal logic and memory array - eliminates need for auxiliary voltage rails in compact designs. |
| GND | Ground Reference | Common return path for VCC and all I/O signals - must be low-impedance to maintain signal integrity at 104 MHz clock rates. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Support | Enables 2-bit-per-clock read transfers, doubling effective throughput vs. standard SPI - reduces boot latency and improves firmware verification speed. |
| Flexible Erase Architecture | Supports 256-byte page, 4/32/64-kByte block, and full-chip erase - minimizes wasted space in mixed-code-and-data partitions and avoids unnecessary rewrites. |
| 128-Byte OTP Security Register | Factory-programmed 64-byte unique ID + 64-byte user-programmable space - supports secure device authentication, ESN binding, and cryptographic key storage. |
| Ultra-Deep Power-Down Mode | 200 nA typical current draw - extends operational lifetime in battery-powered sensors and wearables requiring infrequent wake-up events. |
| Hardware Write Protection | WP pin directly controls sector locking independent of software commands - prevents accidental or malicious firmware corruption during field updates. |
Applications
| Firmware Boot Storage | IoT Edge Node Configuration |
|---|---|
Use Scenario: Storing bootloader and application firmware for ARM Cortex-M microcontrollers in smart home hubs. IC Role / Device Role / Timing Role: Non-volatile code storage with fast random-access read capability and deterministic 6 ns tV for reliable instruction fetch timing. Use Value: Enables sub-100 ms cold boot via 104 MHz Dual-I/O read, while 20-year data retention guarantees firmware integrity across product lifecycle. |
Use Scenario: Holding calibrated sensor offsets, network credentials, and OTA update metadata in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Parameter and configuration storage with byte-level programmability and 256-byte page erase granularity. Use Value: Allows individual parameter updates without erasing full firmware sectors, preserving system uptime and minimizing flash wear. |
| Industrial HMI Display Cache | Automotive Telematics Log Buffer |
Use Scenario: Caching GUI assets (fonts, icons, bitmaps) in factory-floor HMIs where display refresh rate depends on memory bandwidth. IC Role / Device Role / Timing Role: High-throughput serial memory accessed via SPI master controller with Dual-I/O enabled. Use Value: 104 MHz clock and dual-bit output sustain >10 MB/s sustained read - eliminates display stutter during asset loading. |
Use Scenario: Recording vehicle diagnostic events and GPS traces in ADAS telematics modules operating across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Temperature-hardened non-volatile log buffer supporting frequent small-write cycles. Use Value: Rated for 20,000 P/E cycles at +125°C and 20-year retention - meets AEC-Q100 Grade 2 requirements for under-hood deployment. |
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 W25Q20EW | 2 Mbit density, 133 MHz max clock, 1.7–2.0 V supply only; no OTP register; 100,000 P/E cycles at +85°C only. | Lacks ultra-deep power-down (2 µA typical) and industrial-temp OTP security - unsuitable for battery-backed or secure credential storage. | Select W25Q20EW only if higher clock speed is required and 1.7–2.0 V supply constraint applies; verify absence of OTP requirement. |
| Macronix MX25L2006E | 2 Mbit density, 80 MHz max clock, 2.7–3.6 V supply; supports standard SPI only (no Dual-I/O); 100,000 P/E cycles at +85°C. | No Dual-I/O mode limits read bandwidth; higher VCC minimum excludes 1.8 V systems; lacks OTP register and ultra-deep power-down. | Choose MX25L2006E for cost-sensitive 3.3 V-only designs where bandwidth <10 MB/s is acceptable and security features are not needed. |
Compared with W25Q20EW and MX25L2006E, the AT25DF021A-MHN-T uniquely combines 104 MHz Dual-I/O performance, 1.65 V minimum supply, 200 nA ultra-deep power-down, and factory-programmed OTP security - making it optimal for secure, low-power, wide-voltage industrial and automotive firmware storage.
Availability
AT25DF021A-MHN-T is available at Aetrix Electronics and suitable for industrial HMIs, automotive telematics modules, and battery-powered IoT edge nodes requiring stable component supply, extended temperature operation, and secure firmware storage.
Supply support for AT25DF021A-MHN-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 markets.
The AT25DF021A belongs to Renesas' serial Flash memory product line, engineered for high-reliability embedded code and data storage with emphasis on low-voltage operation, flexible erase, and hardware security features.
FAQ
What is the maximum operating frequency supported by the AT25DF021A-MHN-T?
The AT25DF021A-MHN-T supports a maximum clock frequency of 104 MHz in both standard and Dual-Output read modes. This specification is guaranteed across the full industrial temperature range (–40°C to +125°C) and enables up to 13 MB/s effective read bandwidth in Dual-I/O mode, significantly accelerating firmware load times and OTA update verification for the AT25DF021A-MHN-T.
Does the AT25DF021A-MHN-T support hardware write protection?
Yes, the AT25DF021A-MHN-T includes a dedicated active-low WP (Write Protect) pin that enables hardware-controlled locking of protected memory sectors. When asserted, the WP pin prevents modification of sector protection registers and status bits - providing a physical layer of defense against accidental or malicious firmware corruption, independent of software command execution in the AT25DF021A-MHN-T.
What package type is used for the AT25DF021A-MHN-T?
The AT25DF021A-MHN-T uses an 8-lead SOIC (150-mil) package per JEDEC MS-012, with standard pinout and footprint. This package is RoHS-compliant, halide-free, and rated for the full industrial temperature range (–40°C to +125°C), ensuring mechanical and thermal compatibility in high-volume manufacturing environments for the AT25DF021A-MHN-T.
How does the AT25DF021A-MHN-T handle power-down states?
The AT25DF021A-MHN-T offers two ultra-low-power states: Deep Power-Down (4.5 µA typical) and Ultra-Deep Power-Down (200 nA typical). Both are entered via dedicated SPI commands and exited via CS toggle or specific wake sequences. These modes preserve memory contents while minimizing energy consumption - critical for maintaining long battery life in always-on applications using the AT25DF021A-MHN-T.
Is the AT25DF021A-MHN-T compatible with standard SPI interfaces?
Yes, the AT25DF021A-MHN-T is fully SPI-compatible and supports both Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 0). It uses standard SPI signals (CS, SCK, SI, SO) and JEDEC-standard manufacturer/device ID read commands - ensuring seamless integration with existing microcontroller SPI peripherals without custom driver development for the AT25DF021A-MHN-T.
AT25DF021A-MHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K 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-UDFN (5x6)
AT25DF021A-MHN-T FAQ
1.How can I place an order for AT25DF021A-MHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF021A-MHN-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 AT25DF021A-MHN-T reliable?
The price and inventory of AT25DF021A-MHN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DF021A-MHN-T is usually 5 days.
3.What payment methods are accepted for AT25DF021A-MHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF021A-MHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF021A-MHN-T?
AT25DF021A-MHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF021A-MHN-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 AT25DF021A-MHN-T?
For technical support, including AT25DF021A-MHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF021A-MHN-T requirements.
6.How does Aetrix verify that AT25DF021A-MHN-T is sourced from the original manufacturer or authorized distributors?
All AT25DF021A-MHN-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 AT25DF021A-MHN-T meets industry standards.
7.What is the process for return or replacement of AT25DF021A-MHN-T?
All AT25DF021A-MHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF021A-MHN-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 AT25DF021A-MHN-T part is unused and in its original packaging.
Return procedure for AT25DF021A-MHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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