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Renesas AT25DF021A-MAHN-T
- Part No.:
- AT25DF021A-MAHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25DF021A-MAHN-T.pdf
- Description:
- IC FLASH 2MBIT SPI 104MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,952
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Product details
Overview
AT25DF021A-MAHN-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-MAHN-T datasheet, AT25DF021A-MAHN-T pinout, AT25DF021A-MAHN-T application, or AT25DF021A-MAHN-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-MAHN-T implements a standard SPI interface with hardware-controlled write protection via WP pin and suspend/resume capability via HOLD pin. It supports dual-output read (0Bh command) and dual-input program (3Bh command), enabling 2-bit-per-clock data transfer on I/O0 and I/O1 pins during high-speed operations.
Its memory array is organized into uniform 4-kByte sectors, with programmable sector protection registers and a dedicated 128-byte OTP security register-64 bytes factory-programmed with unique identifier and 64 bytes user-programmable-for secure device serialization and ESN storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256 KByte) - sufficient for boot code, firmware images, and configuration data in space-constrained embedded designs. |
| Supply Voltage | 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 microcontrollers without level shifting. |
| Max Clock Frequency | 104 MHz - delivers up to 13 MB/s read throughput in Dual-Output mode, accelerating firmware load and data retrieval. |
| Page Program Time | 1.25 ms typical (256 bytes) - reduces firmware update latency compared to slower serial flash devices. |
| Erase Granularity | 256-byte page, 4/32/64-kByte blocks, full chip - allows precise in-field updates of code modules or data segments without disturbing adjacent regions. |
| Endurance & Retention | 100,000 P/E cycles (–40°C to +85°C); 20,000 cycles (–40°C to +125°C); 20-year data retention - suitable for long-life industrial deployments with frequent field updates. |
| Power Consumption | 200 nA ultra-deep power-down current - extends battery life in always-on or low-duty-cycle IoT edge nodes. |
Pinout & Package
AT25DF021A-MAHN-T is packaged in an 8-lead SOIC (150-mil) per JEDEC MS-012, with gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a notch or dot; package dimensions are 5.0 × 4.0 × 1.5 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition low-to-high to complete commands and enter standby; deassertion places SO in high-Z state. |
| SCK | Serial Clock | Input clock controlling data latching (SI on rising edge) and output timing (SO on falling edge); supports up to 104 MHz. |
| SI (I/O0) | Serial Input / Dual-I/O Data Line 0 | Primary command/address/data input; becomes bidirectional I/O0 during Dual-I/O read/program operations. |
| SO (I/O1) | Serial Output / Dual-I/O Data Line 1 | Primary data output; remains active I/O1 during Dual-I/O modes to enable concurrent 2-bit data transfer. |
| WP | Write Protect | Hardware lock control; low assertion disables write/erase commands to protected sectors; internally pulled high. |
| HOLD | Communication Suspend | Pauses ongoing SPI transfers without deselecting device or resetting internal state; requires CS asserted and SCK low to activate. |
| VCC | Power Supply | Single 1.65–3.6 V supply; powers all logic and memory functions; no auxiliary voltage required for programming/erasing. |
| GND | Ground Reference | System ground return path; must be connected directly to PCB ground plane for stable operation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read/Program Support | Enables 2× data throughput vs. standard SPI by using SI and SO as parallel I/O lines during 0Bh/3Bh command execution. |
| Flexible Erase Architecture | Four erase granularities (page, 4k/32k/64k block, full chip) minimize wasted space and allow independent updates of code and data partitions. |
| 128-Byte OTP Security Register | Factory-programmed 64-byte unique ID + 64-byte user-programmable space for secure device authentication, licensing keys, or calibration data. |
| Ultra-Low Power Modes | 200 nA ultra-deep power-down and 4.5 µA deep power-down currents extend battery life in portable and energy-harvested systems. |
| Hardware + Software Protection | Combines WP pin-based sector locking with software-configurable protection registers for layered, tamper-resistant firmware integrity. |
Applications
| Industrial PLC Firmware Storage | Smart Meter Boot Code |
|---|---|
Use Scenario: Storing and executing real-time control firmware in programmable logic controllers with periodic field updates. IC Role / Device Role / Timing Role: Non-volatile boot memory holding application code and configuration tables; accessed via SPI during cold start and runtime reconfiguration. Use Value: 256-byte page erase enables patch-level firmware updates without full reflash; 100,000 P/E cycles ensure >10 years of maintenance cycles at weekly update frequency. | Use Scenario: Secure storage of metering firmware, cryptographic keys, and utility-specific calibration parameters in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Trusted boot source with OTP-secured ESN and AES key material; accessed during secure boot sequence and OTA update verification. Use Value: Factory-programmed 64-byte unique ID enables device identity binding; hardware WP pin prevents accidental overwrite during field service operations. |
| IoT Edge Node Configuration | Medical Diagnostic Device Log Storage |
Use Scenario: Persistent storage of sensor calibration profiles, network credentials, and operational thresholds in battery-powered wireless sensors. IC Role / Device Role / Timing Role: Low-power configuration memory accessed intermittently during wake-up events; operates in deep power-down between readings. Use Value: 200 nA ultra-deep power-down current extends 10-year battery life in AA-powered nodes; 4-kByte block erase isolates credential updates from log data. | Use Scenario: Reliable storage of diagnostic event logs, patient session records, and FDA-required audit trails in Class II medical instruments. IC Role / Device Role / Timing Role: High-integrity data logger with deterministic erase/write timing; retains data for 20 years per IEC 62304 requirements. Use Value: 20-year data retention and 100,000 P/E cycles meet regulatory longevity mandates; JEDEC-standard ID read simplifies BOM traceability and revision control. |
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, Quad SPI support (not Dual-I/O only), 1.7–2.0 V supply range. | Requires Quad-capable controller; lacks OTP security register; deeper power-down current is 1 µA (vs. 200 nA). | Choose when higher speed and QSPI interface are prioritized over ultra-low power and hardware security features. |
| Macronix MX25L2006E | 2 Mbit density, 80 MHz max clock, standard SPI only (no Dual-I/O), 2.7–3.6 V supply, no OTP register. | Lower performance; incompatible with Dual-I/O read/program commands; no factory-unique ID or user-programmable security space. | Choose for cost-sensitive legacy designs where Dual-I/O and security are not required and 3.3 V supply is fixed. |
Compared with W25Q20EW and MX25L2006E, the AT25DF021A-MAHN-T uniquely combines ultra-low 200 nA deep power-down, integrated OTP security, and Dual-I/O throughput-making it optimal for secure, battery-constrained embedded systems requiring field-upgradable firmware and configuration.
Availability
AT25DF021A-MAHN-T is available at Aetrix Electronics and suitable for industrial automation, smart metering, and medical diagnostics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT25DF021A-MAHN-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, infrastructure, and IoT applications.
The AT25DF021A product line delivers SPI Flash memory optimized for code shadowing and mixed-code/data storage in resource-constrained embedded systems, emphasizing low-voltage operation, security, and industrial temperature reliability.
FAQ
What is the operating temperature range supported by the AT25DF021A-MAHN-T?
The AT25DF021A-MAHN-T supports full industrial temperature operation from –40°C to +125°C. At this extended range, it maintains 20,000 program/erase cycles and full functionality across its 1.7–3.6 V supply range. This makes the AT25DF021A-MAHN-T suitable for under-hood automotive modules, industrial motor drives, and outdoor smart grid equipment where ambient temperatures exceed standard commercial limits.
Does the AT25DF021A-MAHN-T support standard SPI protocols?
Yes, the AT25DF021A-MAHN-T is fully compatible with standard SPI interfaces and supports both Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). It uses standard opcodes including 03h for standard read, 02h for byte program, and D8h for page erase. The AT25DF021A-MAHN-T also extends SPI with Dual-I/O commands (0Bh, 3Bh) while maintaining backward compatibility with legacy SPI controllers.
How does the OTP security register function in the AT25DF021A-MAHN-T?
The AT25DF021A-MAHN-T includes a 128-byte One-Time Programmable (OTP) security register: 64 bytes are factory-programmed with a unique device identifier, and 64 bytes are user-programmable for keys, certificates, or calibration data. Once written, OTP bytes cannot be erased or rewritten. The AT25DF021A-MAHN-T provides dedicated Program OTP (2Bh) and Read OTP (2Bh) commands, enabling secure device serialization and trusted boot workflows without external security ICs.
What package type is used for the AT25DF021A-MAHN-T?
The AT25DF021A-MAHN-T uses an 8-lead SOIC (150-mil) package per JEDEC MS-012, with gull-wing leads, 1.27 mm pitch, and dimensions of 5.0 × 4.0 × 1.5 mm. This surface-mount package is compatible with standard reflow processes and widely supported in industrial PCB assembly. The "MAHN-T" suffix explicitly denotes this SOIC variant, distinguishing it from UDFN, TSSOP, and WLCSP versions of the same base part.
Can the AT25DF021A-MAHN-T be used in battery-powered applications?
Yes, the AT25DF021A-MAHN-T is specifically designed for ultra-low-power operation: it draws only 200 nA in ultra-deep power-down mode and 4.5 µA in deep power-down mode. Its 1.65–3.6 V supply range supports direct connection to single-cell Li-ion or coin-cell batteries. Combined with fast 1.25 ms page programming and 40 ms 4-kByte erases, the AT25DF021A-MAHN-T minimizes active time and maximizes sleep duration-critical for multi-year battery life in IoT edge nodes and portable medical devices.
AT25DF021A-MAHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UFDFN 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 (2x3)
AT25DF021A-MAHN-T FAQ
1.How can I place an order for AT25DF021A-MAHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF021A-MAHN-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-MAHN-T reliable?
The price and inventory of AT25DF021A-MAHN-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-MAHN-T is usually 5 days.
3.What payment methods are accepted for AT25DF021A-MAHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF021A-MAHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF021A-MAHN-T?
AT25DF021A-MAHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF021A-MAHN-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-MAHN-T?
For technical support, including AT25DF021A-MAHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF021A-MAHN-T requirements.
6.How does Aetrix verify that AT25DF021A-MAHN-T is sourced from the original manufacturer or authorized distributors?
All AT25DF021A-MAHN-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-MAHN-T meets industry standards.
7.What is the process for return or replacement of AT25DF021A-MAHN-T?
All AT25DF021A-MAHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF021A-MAHN-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-MAHN-T part is unused and in its original packaging.
Return procedure for AT25DF021A-MAHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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