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Renesas AT25DN512C-XMHF-B
- Part No.:
- AT25DN512C-XMHF-B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25DN512C-XMHF-B.pdf
- Description:
- IC FLASH 512KBIT SPI 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,682
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Product details
Overview
AT25DN512C-XMHF-B 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 reprogrammability.
For engineers reviewing the AT25DN512C-XMHF-B datasheet, AT25DN512C-XMHF-B pinout, AT25DN512C-XMHF-B application, or AT25DN512C-XMHF-B equivalent, key selection criteria include dual-I/O throughput optimization, industrial-temperature operation (–40°C to +85°C), ultra-low deep power-down current (350nA typical), hardware write protection via WP pin, and 128-byte OTP security register with factory-unique 64-byte ID.
Technical Context
The AT25DN512C-XMHF-B implements a standard SPI master-slave interface supporting Modes 0 and 3, with SI and SO pins repurposed as I/O0 and I/O1 during Dual-Output Read (3Bh opcode) to deliver 2-bit-per-cycle data transfer. Its memory array is organized into 256 pages of 256 bytes each, mapped across uniform 4-Kbyte and 32-Kbyte erase blocks aligned to address boundaries.
Internal logic includes a status register with RDY/BUSY, WEL, and EPE bits for real-time operation monitoring and error detection; a dedicated OTP security register with factory-programmed unique ID and user-programmable space; and hardware-controlled sector locking via the active-low WP pin, independent of software protection commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64 Kbytes), sufficient for firmware boot images or configuration data in compact MCU-based designs. |
| Supply Voltage | 2.3V–3.6V single supply - eliminates need for level shifters in 2.5V/3.3V systems and supports battery-backed operation. |
| Max Clock Frequency | 104 MHz for standard Read Array (0Bh) and program/erase commands - enables sub-100ns effective read latency at system level. |
| Read Throughput | Dual-Output Read at up to 50 MHz delivers 100 Mbps effective bandwidth - doubles data rate vs. standard SPI without increasing clock frequency. |
| Erase Granularity | 256-byte page, 4-Kbyte block, 32-Kbyte block, and full-chip erase - allows precise in-field updates without disturbing adjacent code or data segments. |
| Endurance & Retention | 100,000 program/erase cycles and 20-year data retention - validated for long-life industrial control and medical device deployments. |
| Power Consumption | 350 nA ultra-deep power-down current - enables multi-year battery life in always-on sensor nodes or IoT edge devices. |
Pinout & Package
AT25DN512C-XMHF-B is packaged in an 8-lead SOIC (150-mil) with standard lead pitch and gull-wing profile, compatible with automated SMT assembly and IPC Class 2/3 reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable signal; rising edge terminates all operations and places SO in high-impedance state - essential for multi-device SPI bus arbitration. |
| SCK | Serial clock input | Controls timing of all data transfers; data latched on rising edge (SI), output on falling edge (SO/I/O1) - defines synchronous half-duplex communication timing budget. |
| SI (I/O0) | Serial input / dual-read output | Primary command/address/data input; becomes I/O0 output during Dual-Output Read - enables 2-bit parallelism without additional pins. |
| SO (I/O1) | Serial output / dual-read output | Standard data output; remains I/O1 during Dual-Output Read - pairs with SI to deliver two bits per SCK cycle in high-throughput mode. |
| WP | Write protect input | Hardware lock for protected sectors; low-active, internally pulled high - provides fail-safe protection against accidental writes during power transients or firmware bugs. |
| HOLD | Communication pause input | Halts ongoing SPI transfer without deselecting device; requires CS asserted and SCK low - preserves internal state during host interrupt handling or bus sharing. |
| VCC | Power supply | 2.3V–3.6V core and I/O supply - powers internal charge pump for erase/program; no external VPP required. |
| GND | Ground reference | Common return path for all internal circuitry and I/O drivers - must be low-impedance connection to minimize noise coupling into sensitive analog blocks. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Output Read (3Bh) | Enables 2-bit-per-clock-cycle data transfer using SI and SO simultaneously - reduces read time by 50% vs. standard SPI at same clock rate. |
| Flexible Erase Architecture | Supports page (256B), 4-KB, 32-KB, and full-chip erase - minimizes wasted space in mixed code+data layouts and avoids over-erasure penalties. |
| 128-Byte OTP Security Register | Contains 64-byte factory-unique ID + 64-byte user-programmable space - supports secure device authentication, ESN binding, and cryptographic key storage. |
| Ultra-Low Power Modes | 350 nA ultra-deep power-down and 7.5 µA deep power-down - extends battery life in wake-on-event sensor applications with infrequent memory access. |
| Hardware Write Protection | WP pin locks protected sectors independently of software commands - prevents corruption during brown-out, reset, or firmware crash scenarios. |
| JEDEC Standard ID Read | 9Fh command returns manufacturer (0x1F) and device ID (0x4C) - enables automatic flash detection and vendor-agnostic bootloader initialization. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Data |
|---|---|
|
Use Scenario: Storing field-upgradable ladder logic and I/O mapping tables in programmable logic controllers operating in harsh environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with guaranteed 20-year retention and 100K endurance - retains firmware integrity across thermal cycling and voltage sags. Use Value: Eliminates need for external EEPROM or larger NOR flash; 4-KB block erase enables modular firmware patching without full reflash. |
Use Scenario: Holding calibrated sensor offsets, patient history logs, and regulatory compliance flags in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, low-power data logger with OTP-protected serial number - meets IEC 62304 traceability and data integrity requirements. Use Value: Factory-programmed 64-byte unique ID enables device-level audit trail; 350nA deep power-down extends battery runtime between calibrations. |
| Smart Meter Bootloader Image | Automotive Body Control Module Code |
|
Use Scenario: Hosting secure bootloader and cryptographic signature verification routines in utility smart meters with tamper-evident housing. IC Role / Device Role / Timing Role: Trusted execution root with hardware write protection - prevents unauthorized firmware modification during OTA updates. Use Value: WP pin + status register EPE bit provide dual-layer corruption detection; 104MHz read speed accelerates boot sequence under tight timing budgets. |
Use Scenario: Storing CAN protocol stack binaries and calibration parameters in automotive BCMs operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-temperature SPI flash with JEDEC-compliant ID read - ensures interoperability with AUTOSAR-compliant bootloaders. Use Value: Dual-Output Read at 50MHz delivers 100Mbps throughput for rapid firmware load during production programming or dealer reflash. |
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, 133MHz max clock, no dual-output read, 1.65–1.95V/2.7–3.6V dual supply | Larger capacity but lacks dual-I/O and ultra-low power modes; requires voltage translation in 2.3V-only systems | Select when higher density and faster clock are prioritized over power efficiency and dual-read throughput. |
| Macronix MX25L4033F | 4-Mbit density, 104MHz max clock, standard SPI only, 2.7–3.6V supply, no OTP register | Same clock speed but no dual-output capability or factory-unique ID; lacks hardware write protection pin | Choose for cost-sensitive designs where OTP security and WP pin functionality are not required. |
Compared with W25Q40EW and MX25L4033F, AT25DN512C-XMHF-B uniquely combines ultra-low power consumption (350nA), dual-output read, hardware WP pin, and factory-programmed unique ID in a 512-Kbit footprint - making it optimal for space- and energy-constrained edge devices requiring secure, reliable firmware storage.
Availability
AT25DN512C-XMHF-B is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, smart metering, and automotive body electronics requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT25DN512C-XMHF-B 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-reliability nonvolatile memory and IoT connectivity solutions for industrial and medical markets.
The AT25DN512C-XMHF-B belongs to Adesto's DataFlash® family, designed specifically for embedded systems needing efficient code shadowing, secure data logging, and robust operation under voltage and thermal stress.
FAQ
What is the maximum clock frequency supported by AT25DN512C-XMHF-B for standard Read Array operations?
The AT25DN512C-XMHF-B supports up to 104 MHz for Read Array operations using the 0Bh opcode, enabling high-speed sequential reads with minimal latency. This specification is validated across the full industrial temperature range (–40°C to +85°C) and applies to both SO-only and Dual-Output Read modes when used within their respective frequency limits. The 03h opcode supports up to 33 MHz for lower-speed, lower-power applications.
Does AT25DN512C-XMHF-B support hardware write protection, and how is it implemented?
Yes, AT25DN512C-XMHF-B implements hardware write protection via the active-low WP pin, which locks protected memory sectors independently of software commands. When WP is driven low, it prevents program and erase operations on designated sectors even if the Write Enable Latch (WEL) bit is set. The WP pin is internally pulled high, allowing it to be left floating if unused, though external connection to VCC is recommended for noise immunity.
What erase block sizes are available on AT25DN512C-XMHF-B, and why does this matter for firmware updates?
AT25DN512C-XMHF-B supports four erase granularities: 256-byte page, 4-Kbyte block, 32-Kbyte block, and full-chip erase. This flexibility allows targeted firmware patches without erasing unrelated code or configuration data - reducing update time, minimizing wear on unaffected regions, and preserving data integrity. For example, a 4-KB block erase can update a single driver module while leaving bootloader and calibration data intact.
How does the Dual-Output Read feature of AT25DN512C-XMHF-B improve system-level performance?
The Dual-Output Read feature (opcode 3Bh) uses both SI and SO pins as outputs to deliver two bits per SCK cycle, effectively doubling read throughput compared to standard SPI at the same clock frequency. At its rated 50 MHz dual-read clock, AT25DN512C-XMHF-B achieves 100 Mbps effective bandwidth - accelerating boot sequences, firmware loading, and data logging in bandwidth-constrained microcontroller systems.
What is the purpose and structure of the OTP security register in AT25DN512C-XMHF-B?
The 128-byte OTP security register in AT25DN512C-XMHF-B consists of 64 bytes factory-programmed with a unique device identifier and 64 bytes user-programmable for keys, certificates, or calibration data. Once programmed, OTP locations cannot be altered - providing tamper-resistant storage for electronic serial numbers, secure boot roots, or cryptographic material essential for device authentication and regulatory compliance.
AT25DN512C-XMHF-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-TSSOP
AT25DN512C-XMHF-B FAQ
1.How can I place an order for AT25DN512C-XMHF-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DN512C-XMHF-B 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-XMHF-B reliable?
The price and inventory of AT25DN512C-XMHF-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DN512C-XMHF-B is usually 5 days.
3.What payment methods are accepted for AT25DN512C-XMHF-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DN512C-XMHF-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DN512C-XMHF-B?
AT25DN512C-XMHF-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DN512C-XMHF-B 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-XMHF-B?
For technical support, including AT25DN512C-XMHF-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DN512C-XMHF-B requirements.
6.How does Aetrix verify that AT25DN512C-XMHF-B is sourced from the original manufacturer or authorized distributors?
All AT25DN512C-XMHF-B 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-XMHF-B meets industry standards.
7.What is the process for return or replacement of AT25DN512C-XMHF-B?
All AT25DN512C-XMHF-B units undergo pre-shipment inspection (PSI). If there is an issue with AT25DN512C-XMHF-B, 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-XMHF-B part is unused and in its original packaging.
Return procedure for AT25DN512C-XMHF-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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