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Renesas AT25DF512C-SSHN-B
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- Part No.:
- AT25DF512C-SSHN-B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25DF512C-SSHN-B.pdf
- Description:
- IC FLASH 512KBIT SPI 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,834
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Product details
Overview
AT25DF512C-SSHN-B from Renesas Electronics is a 512-Kbit serial Flash memory IC with SPI interface, supporting dual-output read mode, 104 MHz max clock frequency, 6 ns clock-to-output delay, and flexible erase architecture (256-byte page / 4-kByte block / 32-kByte block). It operates across 1.65 V–3.6 V supply and is used for code shadowing and embedded data storage in resource-constrained microcontroller systems.
For engineers reviewing the AT25DF512C-SSHN-B datasheet, AT25DF512C-SSHN-B pinout, AT25DF512C-SSHN-B application, or AT25DF512C-SSHN-B equivalent, key selection criteria include dual-read throughput, ultra-low deep power-down current (200 nA), OTP security register capability, sector protection via WP pin, and compatibility with SPI Modes 0/3 in industrial temperature range.
Technical Context
The AT25DF512C-SSHN-B implements a standard SPI master-slave interface with four dedicated signal lines (CS, SCK, SI, SO) and supports both single- and dual-output read modes. Its command set includes byte/page program (02h), page erase (81h), 4-kB/32-kB block erase (20h/52h), chip erase (60h/C7h), and status register access (05h/01h/31h).
Internal architecture features a segmented memory array optimized for co-location of code and data, with hardware write protection controlled by the active-low WP pin and software-controlled locking via status register bits. The device integrates a 128-byte OTP security register-64 bytes factory-programmed with unique ID and 64 bytes user-programmable-for secure serialization and key storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64 KByte) - sufficient for boot code, firmware patches, and configuration data in compact MCU-based designs. |
| Supply Voltage | 1.65 V to 3.6 V - enables direct interfacing with 1.8 V and 3.3 V logic without level-shifting. |
| Max Clock Frequency | 104 MHz - supports high-speed read operations, especially in dual-output mode (50 MHz max for 3Bh command). |
| Read Latency | 6 ns clock-to-output (tV) - minimizes instruction fetch delay during code execution from flash. |
| Erase Granularity | 256-byte page / 4-kByte block / 32-kByte block - allows precise updates of small data segments without disturbing adjacent code. |
| Power-Down Current | 200 nA ultra-deep power-down (typical) - extends battery life in always-on IoT sensor nodes and wearables. |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention - suitable for field-upgradable firmware and long-life industrial deployments. |
Pinout & Package
AT25DF512C-SSHN-B is packaged in an 8-lead SOIC (150-mil) with gull-wing leads, RoHS-compliant, and rated for -40 °C to +85 °C operation at 1.7 V–3.6 V supply.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable; must transition high→low to initiate command and low→high to terminate; holds device in standby when deasserted. |
| SCK | Serial clock input | Controls timing of all SPI transfers; data latched on rising edge, output shifted on falling edge; supports up to 104 MHz. |
| SI (I/O0) | Serial input / Dual-output data line | Receives commands, addresses, and program data; becomes output (I/O0) during dual-output read (3Bh) to deliver LSB-aligned data bits. |
| SO (I/O1) | Serial output / Dual-output data line | Delivers read data on falling SCK edge; remains output (I/O1) in dual-output mode to deliver MSB-aligned data bits alongside SI. |
| WP | Write protect input | Hardware lock control; active-low; enables sector-level protection independent of software status register settings. |
| HOLD | Communication pause input | Active-low; suspends ongoing SPI transfer without deselecting CS or resetting internal state; requires SCK low to activate. |
| VCC | Power supply | Single 1.65–3.6 V rail powers core, I/O, and charge pump; no auxiliary voltage required for programming/erasing. |
| GND | Ground reference | Common return path for all internal circuitry and I/O signals; must be low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-output read support (3Bh command) | Enables 2-bit-per-cycle data transfer, doubling effective read bandwidth over standard SPI read (0Bh) at same clock rate. |
| Flexible erase architecture | Three-tiered granularity (256 B / 4 kB / 32 kB) reduces wasted space in mixed code+data layouts and avoids full-chip erases. |
| 128-byte OTP security register | 64-byte factory-unique ID + 64-byte user-programmable space supports secure device authentication and ESN binding. |
| Ultra-deep power-down mode | 200 nA typical current draw allows multi-year battery operation in maintenance-free edge sensors and metering devices. |
| Hardware write protection via WP pin | Independent of software status register; provides fail-safe sector locking even if firmware is compromised or corrupted. |
Applications
| Firmware Boot Storage | IoT Sensor Node Data Logging |
|---|---|
|
Use Scenario: Storing bootloader and application firmware for ARM Cortex-M microcontrollers in portable medical devices. IC Role / Device Role / Timing Role: Non-volatile code storage with fast random-access read capability; supports XIP (execute-in-place) via dual-output mode to reduce RAM footprint. Use Value: 6 ns tV and 104 MHz clock enable sub-100 ns instruction fetch latency; 256-byte page erase permits patching of critical bug fixes without reprogramming entire image. |
Use Scenario: Capturing timestamped environmental readings (temperature, humidity, motion) in battery-powered smart building sensors. IC Role / Device Role / Timing Role: Embedded data logger with wear-leveling-friendly erase granularity; ultra-deep power-down preserves state between wake cycles. Use Value: 200 nA deep-sleep current extends 2-AA battery life beyond 5 years; 4-kB block erase aligns with daily log rotation intervals. |
| Industrial HMI Configuration Storage | White Goods Appliance Control Firmware |
|
Use Scenario: Persisting UI layout, language packs, and calibration parameters in touch-based human-machine interfaces for factory automation panels. IC Role / Device Role / Timing Role: Field-upgradable parameter store with hardware write protection to prevent accidental corruption during firmware updates. Use Value: WP pin enables physical lock of critical configuration sectors; 100,000-cycle endurance supports lifetime field updates across product generations. |
Use Scenario: Hosting motor control algorithms and safety-critical fault-handling routines in washing machine main control units. IC Role / Device Role / Timing Role: Safety-relevant firmware storage with verified 20-year data retention and robust ESD immunity per JEDEC standards. Use Value: 20-year retention ensures firmware integrity over appliance lifespan; 1.65 V min supply tolerates brown-out conditions during mains transients. |
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, 133 MHz max clock, 1.65–1.95 V supply only; lacks OTP register and ultra-deep power-down mode. | Better suited for higher-density boot code where voltage headroom is constrained to 1.8 V systems. | Select W25Q40EW only if >512 Kbit capacity and 133 MHz speed are required, and OTP/security features are unnecessary. |
| Macronix MX25L51245 | 512 Kbit, 104 MHz, but uses legacy 3-byte addressing only; no dual-output read; 1 µA deep power-down (vs. 200 nA). | Compatible for basic SPI read/write in cost-sensitive consumer electronics where ultra-low sleep current is not critical. | Choose MX25L51245 when pinout compatibility and minimal feature set suffice, and 200 nA power-down is not required. |
Compared with W25Q40EW and MX25L51245, AT25DF512C-SSHN-B uniquely delivers OTP-based device serialization, dual-output throughput acceleration, and industry-leading 200 nA ultra-deep power-down-making it optimal for secure, battery-constrained, and performance-sensitive embedded designs.
Availability
AT25DF512C-SSHN-B is available at Aetrix Electronics and suitable for firmware boot storage, IoT sensor node data logging, industrial HMI configuration storage, and white goods appliance control firmware requiring stable component supply across extended production lifecycles.
Supply support for AT25DF512C-SSHN-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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
The AT25DF512C belongs to Renesas' serial Flash memory product line, designed specifically for low-voltage, low-power, and secure embedded code and data storage in space-constrained systems.
FAQ
What is the operating voltage range of the AT25DF512C-SSHN-B?
The AT25DF512C-SSHN-B operates from 1.65 V to 3.6 V. At the lower end, full functionality (including program/erase) is guaranteed from 1.7 V to 3.6 V; operation down to 1.65 V is supported for read-only use. This wide range eliminates need for external voltage regulators in mixed-voltage designs.
Does the AT25DF512C-SSHN-B support dual-output read mode, and what is its maximum clock frequency in that mode?
Yes, the AT25DF512C-SSHN-B supports dual-output read using opcode 3Bh, where both SI and SO pins output data bits simultaneously. In this mode, the maximum clock frequency is 50 MHz - lower than the 104 MHz limit for standard read (0Bh) due to timing constraints of dual-bit output synchronization.
How does the hardware write protection (WP pin) function on the AT25DF512C-SSHN-B?
The WP pin on the AT25DF512C-SSHN-B provides hardware-controlled sector locking independent of software status register settings. When pulled low, it enables hardware protection of designated memory blocks as defined in the status register's BP bits. The pin is internally pulled high and may be left floating if unused, though external tie-to-VCC is recommended.
What is the purpose and structure of the OTP security register in the AT25DF512C-SSHN-B?
The AT25DF512C-SSHN-B includes a 128-byte OTP security register: 64 bytes are factory-programmed with a unique device identifier, and 64 bytes are user-programmable once. It supports secure serialization, ESN storage, and cryptographic key binding - accessed via opcodes 9Bh (program) and 77h (read), with irreversible write capability.
What are the erase time specifications for the AT25DF512C-SSHN-B at typical conditions?
At typical conditions (VCC = 3.0 V, TA = 25 °C), the AT25DF512C-SSHN-B exhibits 1.5 ms typical page program time (256 bytes), 50 ms typical 4-kByte block erase time, and 350 ms typical 32-kByte block erase time. Full chip erase takes ~3 s. All operations include automatic pass/fail verification and status flag reporting.
AT25DF512C-SSHN-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- 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, 3.5ms
- 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-SOIC
AT25DF512C-SSHN-B FAQ
1.How can I place an order for AT25DF512C-SSHN-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF512C-SSHN-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 AT25DF512C-SSHN-B reliable?
The price and inventory of AT25DF512C-SSHN-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25DF512C-SSHN-B is usually 5 days.
3.What payment methods are accepted for AT25DF512C-SSHN-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF512C-SSHN-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF512C-SSHN-B?
AT25DF512C-SSHN-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF512C-SSHN-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 AT25DF512C-SSHN-B?
For technical support, including AT25DF512C-SSHN-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF512C-SSHN-B requirements.
6.How does Aetrix verify that AT25DF512C-SSHN-B is sourced from the original manufacturer or authorized distributors?
All AT25DF512C-SSHN-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 AT25DF512C-SSHN-B meets industry standards.
7.What is the process for return or replacement of AT25DF512C-SSHN-B?
All AT25DF512C-SSHN-B units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF512C-SSHN-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 AT25DF512C-SSHN-B part is unused and in its original packaging.
Return procedure for AT25DF512C-SSHN-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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