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Renesas AT25DN512C-MAHF-T
- Part No.:
- AT25DN512C-MAHF-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25DN512C-MAHF-T.pdf
- Description:
- IC FLASH 512KBIT SPI 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,789
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Product details
Overview
AT25DN512C-MAHF-T from Adesto Technologies is a 512-Kbit serial Flash memory IC with SPI interface, dual-output read support, 104MHz max clock frequency, 6ns clock-to-output delay, and flexible erase architecture (256-byte page / 4-Kbyte / 32-Kbyte / full-chip). It serves as nonvolatile code and data storage in resource-constrained embedded systems requiring fast, low-power, and secure boot or firmware update capability.
For engineers reviewing the AT25DN512C-MAHF-T datasheet, AT25DN512C-MAHF-T pinout, AT25DN512C-MAHF-T application, or AT25DN512C-MAHF-T equivalent, key selection considerations include dual-output read throughput, ultra-deep power-down current (350nA), hardware write protection via WP pin, 128-byte OTP security register, and industrial temperature operation (–40°C to +85°C).
Technical Context
The AT25DN512C-MAHF-T implements a SPI-compatible serial interface supporting Modes 0 and 3, with dual-output read enabled via SI (I/O0) and SO (I/O1) pins simultaneously outputting bits per SCK falling edge. Its memory array is organized into 256 pages of 256 bytes each, enabling fine-grained erasure for mixed code/data use cases.
It integrates hardware-controlled sector locking via the WP pin, a 128-byte OTP security register (64-byte factory UID + 64-byte user-programmable), and automatic program/erase failure detection reported via the EPE bit in the Status Register. All operations-read, program, and erase-are performed within a single 2.3V–3.6V supply, eliminating auxiliary voltage requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64 Kbyte), sufficient for compact firmware images or configuration data in microcontroller-based systems. |
| Interface | SPI-compatible, supports Modes 0 and 3; enables interoperability with standard MCU SPI peripherals without custom timing logic. |
| Max Clock Frequency | 104 MHz for Read Array and Page Erase - enables high-throughput firmware loading and rapid field updates. |
| Read Latency | 6 ns clock-to-output (tV) - minimizes wait states during instruction fetch or real-time data access. |
| Erase Granularity | 256-byte page, 4-Kbyte block, 32-Kbyte block, and full chip - allows optimal memory utilization for both code modules and variable-length data logs. |
| Power Consumption | 350 nA ultra deep power-down current - extends battery life in always-on IoT sensors or wearables between wake cycles. |
| Data Retention | 20 years at +85°C - ensures long-term reliability in automotive control units or industrial controllers without refresh. |
| Endurance | 100,000 program/erase cycles - supports frequent over-the-air (OTA) firmware updates in connected devices. |
Pinout & Package
AT25DN512C-MAHF-T is packaged in an 8-lead SOIC (150-mil) with standard lead pitch and gull-wing profile, compatible with automated PCB assembly and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable signal; initiates all commands and places device in standby when deasserted - essential for multi-device SPI bus arbitration. |
| SCK | Serial clock input | Controls data sampling (rising edge) and output timing (falling edge); supports up to 104 MHz - defines maximum system throughput. |
| SI (I/O0) | Serial input / Dual-output data line | Shifts command/address/data in normal mode; becomes I/O0 output during Dual-Output Read - doubles effective read bandwidth vs. standard SPI. |
| SO (I/O1) | Serial output / Dual-output data line | Outputs MSB-first data on falling SCK edge; remains active as I/O1 during Dual-Output Read - pairs with SI for 2-bit-per-cycle transfer. |
| WP | Hardware write protect input | Low-active pin enabling hardware lock of protected sectors - prevents accidental firmware corruption during power transients or software faults. |
| HOLD | Serial communication pause input | Halts ongoing SPI transfers without deselecting device - preserves internal state during MCU interrupt servicing or bus contention. |
| VCC | Power supply | 2.3V–3.6V single supply - eliminates need for level shifters or charge pumps in 3.3V or 2.5V system rails. |
| GND | Ground reference | Common return path for all digital and analog circuitry - critical for noise immunity in mixed-signal embedded applications. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Output Read (3Bh command) | Two bits per SCK cycle using SI and SO - delivers ~2× higher effective read bandwidth vs. standard SPI Read Array (0Bh/03h) at same clock rate. |
| Flexible Erase Architecture | Page (256B), 4-KB, 32-KB, and full-chip erase - enables efficient partitioning of firmware code, calibration tables, and runtime logs without wasted space. |
| 128-Byte OTP Security Register | 64-byte factory-unique ID + 64-byte user-programmable area - supports secure device identity, cryptographic key binding, and anti-cloning in certified systems. |
| Ultra Deep Power-Down Mode | 350 nA typical current draw - reduces quiescent power by >99% vs. standby mode (25 µA), critical for energy-harvesting or coin-cell-powered endpoints. |
| Hardware Write Protection | WP pin controls sector locking independent of software state - provides fail-safe protection against unintended writes during brown-out or reset conditions. |
| JEDEC Standard ID Read | 9Fh command returns manufacturer (0x1F) and device ID (0x4C) - enables automatic flash detection and vendor-agnostic bootloader initialization. |
Applications
| Secure Boot Loader Storage | Firmware Over-the-Air (OTA) Update Buffer |
|---|---|
|
Use Scenario: Storing immutable bootloader code and public key certificates in a tamper-resistant region of flash memory. IC Role / Device Role / Timing Role: Nonvolatile storage element holding authenticated boot assets; accessed during cold start before main application executes. Use Value: Enables root-of-trust chain verification using factory-programmed UID and OTP-stored keys - prevents unauthorized firmware execution. |
Use Scenario: Receiving and staging new firmware images in a dedicated memory region prior to atomic swap and validation. IC Role / Device Role / Timing Role: High-reliability, endurance-optimized storage buffer for fragmented OTA packets under intermittent connectivity. Use Value: 100,000 P/E cycles and 20-year retention ensure robust update history logging and rollback capability across product lifetime. |
| Industrial Sensor Configuration & Calibration Data | Consumer Electronics Device Personalization |
|
Use Scenario: Storing sensor-specific calibration coefficients, linearization tables, and environmental compensation parameters. IC Role / Device Role / Timing Role: Persistent parameter store updated infrequently during factory calibration or field maintenance. Use Value: Small 256-byte page erase minimizes write latency and disturbance to adjacent operational data - preserves integrity of live sensor readings. |
Use Scenario: Holding user preferences, language settings, display themes, and paired accessory IDs in smart home hubs or audio devices. IC Role / Device Role / Timing Role: Low-power, fast-access configuration memory retained across sleep/wake cycles and power loss. Use Value: 350 nA ultra-deep power-down current extends battery life in portable remotes or voice assistants without compromising feature richness. |
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 (8× larger), 133 MHz max clock, no dual-output read; supports QPI and DTR modes. | Better suited for larger firmware images but lacks AT25DN512C-MAHF-T's fine-grained 256-byte page erase and OTP security register. | Select W25Q40EW only if capacity and speed outweigh need for secure UID storage and minimal erase granularity. |
| Macronix MX25L4005 | 4-Mbit density, 75 MHz max clock, standard SPI only (no dual-output), 4-Kbyte uniform erase only. | Lacks both dual-read throughput and flexible erase options; requires external logic for secure ID management. | Choose MX25L4005 only in cost-sensitive, legacy designs where 512 Kbit is insufficient and security features are handled externally. |
Compared with W25Q40EW and MX25L4005, AT25DN512C-MAHF-T delivers superior memory efficiency for mixed code/data use, built-in security primitives, and lower active/standby power - making it optimal for compact, secure, battery-aware embedded systems rather than high-capacity general-purpose storage.
Availability
AT25DN512C-MAHF-T is available at Aetrix Electronics and suitable for industrial control panels, medical diagnostic handhelds, and smart metering systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT25DN512C-MAHF-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
Adesto Technologies (acquired by Dialog Semiconductor, now part of Renesas Electronics) specialized in low-power, high-performance nonvolatile memory and IoT connectivity solutions.
The AT25DN512C-MAHF-T belongs to Adesto's DataFlash® family, designed specifically for embedded systems needing fast, secure, and energy-efficient serial flash storage with advanced erase flexibility and integrated security features.
FAQ
What is the operating voltage range of the AT25DN512C-MAHF-T?
The AT25DN512C-MAHF-T operates from a single supply of 2.3V to 3.6V. This wide voltage range supports direct interfacing with 2.5V and 3.3V logic families without level-shifting circuitry, and ensures reliable operation across battery discharge curves in portable equipment. The AT25DN512C-MAHF-T does not require separate VPP or programming voltages.
Does the AT25DN512C-MAHF-T support dual-output read, and how is it enabled?
Yes, the AT25DN512C-MAHF-T supports Dual-Output Read using opcode 3Bh, which configures both SI (I/O0) and SO (I/O1) as simultaneous data outputs. During this mode, two bits per SCK falling edge are transferred - effectively doubling read throughput versus standard SPI Read Array (0Bh). The AT25DN512C-MAHF-T requires one dummy byte after the address to initiate the sequence.
How is hardware write protection implemented on the AT25DN512C-MAHF-T?
Hardware write protection on the AT25DN512C-MAHF-T is controlled by the WP pin, which must be driven low to enable locking of protected memory sectors. The WP pin is internally pulled high, so it may be left floating if unused - though external connection to VCC is recommended for noise immunity. The AT25DN512C-MAHF-T retains protection state across power cycles without software intervention.
What is the purpose and structure of the OTP security register in the AT25DN512C-MAHF-T?
The AT25DN512C-MAHF-T includes a 128-byte OTP (One-Time Programmable) security register: 64 bytes are factory-programmed with a unique device identifier, and 64 bytes are user-programmable for keys, certificates, or serial numbers. Once written, OTP contents cannot be erased or rewritten - providing immutable device identity and secure credential storage. The AT25DN512C-MAHF-T uses opcode 9Bh to program this register.
What erase block sizes does the AT25DN512C-MAHF-T support, and why does that matter?
The AT25DN512C-MAHF-T supports four erase granularities: 256-byte page, 4-Kbyte block, 32-Kbyte block, and full chip. This flexibility avoids memory waste common with fixed-sector flash - for example, updating a 300-byte configuration table requires only one page erase instead of a 4-Kbyte block. The AT25DN512C-MAHF-T's architecture improves usable density and extends endurance by minimizing unnecessary erasures of adjacent data.
AT25DN512C-MAHF-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:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 8µs, 1.75ms
- Access Time:
- -
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
AT25DN512C-MAHF-T FAQ
1.How can I place an order for AT25DN512C-MAHF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DN512C-MAHF-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 AT25DN512C-MAHF-T reliable?
The price and inventory of AT25DN512C-MAHF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DN512C-MAHF-T is usually 5 days.
3.What payment methods are accepted for AT25DN512C-MAHF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DN512C-MAHF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DN512C-MAHF-T?
AT25DN512C-MAHF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DN512C-MAHF-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 AT25DN512C-MAHF-T?
For technical support, including AT25DN512C-MAHF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DN512C-MAHF-T requirements.
6.How does Aetrix verify that AT25DN512C-MAHF-T is sourced from the original manufacturer or authorized distributors?
All AT25DN512C-MAHF-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 AT25DN512C-MAHF-T meets industry standards.
7.What is the process for return or replacement of AT25DN512C-MAHF-T?
All AT25DN512C-MAHF-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DN512C-MAHF-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 AT25DN512C-MAHF-T part is unused and in its original packaging.
Return procedure for AT25DN512C-MAHF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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