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Renesas AT25DF512C-XMHNGU-B
- Part No.:
- AT25DF512C-XMHNGU-B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT25DF512C-XMHNGU-B.pdf
- Description:
- IC FLASH 512KBIT SPI 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,546
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Product details
Overview
AT25DF512C-XMHNGU-B from Renesas Electronics is a 512-Kbit SPI serial Flash memory IC designed for code shadowing and embedded data storage in resource-constrained systems. It operates from 1.65 V to 3.6 V, supports SPI Modes 0/3 and Dual-Output Read, delivers 104 MHz max clock frequency, achieves 6 ns clock-to-output delay, and features uniform 4-kByte and 32-kByte block erase plus 256-Byte page erase.
For engineers reviewing the AT25DF512C-XMHNGU-B datasheet, AT25DF512C-XMHNGU-B pinout, AT25DF512C-XMHNGU-B application, or AT25DF512C-XMHNGU-B equivalent, key selection criteria include dual-read throughput optimization, ultra-low deep power-down current (200 nA), OTP security register usage for device serialization, and compatibility with 1.65 V minimum supply rails in battery-powered IoT edge nodes.
Technical Context
The AT25DF512C-XMHNGU-B implements a dedicated SPI interface with hardware-controlled write protection via WP pin and HOLD pin for transaction suspension without chip deselection. Its memory architecture supports three-tiered erase granularity-256-Byte pages, 4-kByte blocks, and 32-kByte blocks-enabling efficient co-location of firmware code and runtime data without cross-contamination.
Dual-Output Read mode uses both SI (I/O0) and SO (I/O1) pins as outputs, clocking two bits per SCK falling edge at up to 50 MHz, doubling read bandwidth versus standard single-output mode. The integrated 128-byte OTP security register contains 64 bytes factory-programmed unique ID and 64 bytes user-programmable space for ESN or cryptographic keys.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64 KByte) - sufficient for boot code + configuration + small firmware images in microcontroller-based systems |
| Supply Voltage Range | 1.65 V to 3.6 V - enables direct interfacing with 1.8 V and 3.3 V logic domains without level shifters |
| Max Clock Frequency | 104 MHz - supports high-speed instruction fetch and firmware updates over SPI |
| Read Latency (tV) | 6 ns - ensures minimal wait states during code execution from flash |
| Erase Granularity | 256-Byte page / 4-kByte block / 32-kByte block - allows precise firmware patching and data logging without full-chip erase |
| Deep Power-Down Current | 200 nA typical - extends battery life in always-on sensor nodes and wearable devices |
| Endurance & Retention | 100,000 program/erase cycles / 20 years data retention - suitable for field-upgradable embedded systems |
Pinout & Package
AT25DF512C-XMHNGU-B is packaged in an 8-lead SOIC (150-mil) compliant with JEDEC MS-012, with 1.27 mm pitch and body dimensions 5.0 × 4.0 × 1.75 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select Input | Active-low enable signal; must transition low-to-high to complete commands and enter standby mode after self-timed operations |
| SCK | Serial Clock Input | Controls data timing; rising edge latches input (SI), falling edge clocks output (SO/I/O0); supports up to 104 MHz |
| SI (I/O0) | Serial Input / Dual-Read Output | Input for commands/addresses/data; becomes bidirectional I/O0 during Dual-Output Read to double read bandwidth |
| SO (I/O1) | Serial Output / Dual-Read Output | Primary output for standard reads; remains active I/O1 during Dual-Output Read alongside SI (I/O0) |
| WP | Hardware Write Protect Input | Low-active pin enabling sector-level hardware locking; internally pulled high; connects to VCC if unused |
| HOLD | Communication Suspend Input | Pauses ongoing SPI transfers without deselecting chip or resetting internal state; internally pulled high |
| VCC | Power Supply | Single 1.65–3.6 V rail powers all logic and memory functions; no auxiliary voltage required for programming |
| GND | Ground Reference | System ground return path; must be low-impedance connection to minimize noise on SPI signals |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Output Read Mode | Enables 2-bit-per-cycle data transfer using SI and SO simultaneously, increasing effective read throughput by 100% at 50 MHz |
| Flexible Erase Architecture | Supports 256-Byte page, 4-kByte block, and 32-kByte block erase - minimizes wasted space when updating mixed code/data partitions |
| 128-Byte OTP Security Register | Contains 64-byte factory-unique ID and 64-byte user-programmable space for secure device identity and key storage |
| Ultra-Low Power Modes | 200 nA ultra-deep power-down and 5 µA deep power-down currents extend battery life in intermittent-sensing applications |
| Hardware Sector Protection | WP pin enables hardware locking of protected memory regions independent of software status register settings |
Applications
| IoT Edge Sensor Node | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Battery-powered environmental sensor collects temperature/humidity data and transmits via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Stores boot loader, sensor driver firmware, and calibration tables; retains data across power cycles. Use Value: 200 nA ultra-deep power-down current extends 2-AA battery life beyond 5 years; 256-Byte page erase enables over-the-air firmware patching without disrupting active logging. |
Use Scenario: Programmable Logic Controller stores ladder logic programs and I/O configuration in nonvolatile memory. IC Role / Device Role / Timing Role: Provides reliable, fast-access code storage with hardware write protection against accidental corruption during runtime. Use Value: 4-kByte uniform block erase allows safe update of individual function blocks; WP pin prevents unauthorized reprogramming during maintenance windows. |
| Wearable Health Monitor | Smart Home Hub Boot Memory |
Use Scenario: Optical heart-rate monitor records raw PPG waveforms locally before BLE transmission to smartphone. IC Role / Device Role / Timing Role: Acts as data buffer and firmware repository; supports rapid code execution via SPI read caching. Use Value: 6 ns tV latency reduces CPU wait time during instruction fetch; 1.65 V min supply enables operation directly from coin-cell battery regulator. |
Use Scenario: Wi-Fi-enabled home automation hub boots Linux kernel and loads device drivers from external flash. IC Role / Device Role / Timing Role: Primary boot memory mapped to MCU's XIP interface; supports Dual-Output Read for faster kernel load times. Use Value: 104 MHz max clock and Dual-Output Read reduce boot time by ~40% vs. standard SPI flash; 32-kByte block erase simplifies OTA kernel updates. |
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, 1.7–1.95 V supply range only, no OTP register, 10 ms typical 4-kB erase | Lacks ultra-low-voltage support and hardware serialization capability; better suited for cost-sensitive 3.3 V-only designs | Select when higher density and lower unit cost outweigh need for 1.65 V operation and device ID security |
| Micron MT25QL01G | 1-Gbit density, quad-SPI interface, 1.7–2.0 V or 2.7–3.6 V dual supply ranges, no 256-Byte page erase | Requires quad-capable controller; larger erase blocks increase risk of data loss during partial updates | Choose for high-throughput applications needing >512 Kbit capacity and quad read modes, not for low-voltage or fine-grained update use cases |
Compared with W25Q40EW and MT25QL01G, AT25DF512C-XMHNGU-B uniquely balances 1.65 V operation, 256-Byte page erase, and factory-programmed unique ID - making it optimal for compact, battery-powered, security-aware edge devices where voltage headroom and update precision are critical.
Availability
AT25DF512C-XMHNGU-B is available at Aetrix Electronics and suitable for IoT edge sensor nodes, industrial PLC firmware storage, and wearable health monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT25DF512C-XMHNGU-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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with strong IP in microcontrollers, analog, and memory technologies.
The AT25DF512C-XMHNGU-B belongs to Renesas' serial Flash memory product line, engineered specifically for low-voltage, low-power, and secure code+data storage in space-constrained embedded systems.
FAQ
What is the minimum operating voltage for the AT25DF512C-XMHNGU-B?
The AT25DF512C-XMHNGU-B supports a minimum supply voltage of 1.65 V across its full industrial temperature range (-40 °C to +85 °C) when operated between 1.7 V and 3.6 V, and down to 1.65 V at -10 °C to +85 °C. This enables direct integration with 1.8 V regulators and low-power microcontrollers without level-shifting circuitry. AT25DF512C-XMHNGU-B maintains full functionality-including Dual-Output Read and 104 MHz operation-at this voltage threshold.
Does the AT25DF512C-XMHNGU-B support Quad-SPI or only standard SPI?
The AT25DF512C-XMHNGU-B supports only standard SPI (single I/O) and Dual-Output Read modes-not Quad-SPI. It uses SI (I/O0) and SO (I/O1) together for dual-bit reads but lacks dedicated QIO pins or command set for quad operation. AT25DF512C-XMHNGU-B is optimized for SPI Masters with two I/O lines, offering 2× read bandwidth over standard SPI while maintaining pin count and layout simplicity.
How is the 128-byte OTP security register structured in the AT25DF512C-XMHNGU-B?
The AT25DF512C-XMHNGU-B OTP security register is 128 bytes total: 64 bytes factory-programmed with a unique device identifier (ESN), and 64 bytes user-programmable for keys, certificates, or custom serialization. Programming is one-time only and requires the 9Bh opcode; reads use 77h. AT25DF512C-XMHNGU-B enforces write-locking after initial programming, ensuring immutability of stored credentials.
What are the erase times for different block sizes in the AT25DF512C-XMHNGU-B?
AT25DF512C-XMHNGU-B specifies 50 ms typical for 4-kByte block erase, 350 ms typical for 32-kByte block erase, and 1.5 ms typical for 256-Byte page program (not erase). Page erase is not supported-only page program. Full chip erase takes 2 seconds typical. All values are measured at VCC = 3.0 V and TA = 25 °C. AT25DF512C-XMHNGU-B automatically verifies and reports failures for each operation.
Can the AT25DF512C-XMHNGU-B be used in place of the older AT25DF512B?
Yes, AT25DF512C-XMHNGU-B is a drop-in replacement for AT25DF512B with identical pinout, command set, and timing. Key improvements include tighter tV (6 ns vs. 8 ns), enhanced deep power-down current (200 nA vs. 1 µA), and extended 1.65 V operation. AT25DF512C-XMHNGU-B maintains full backward compatibility while delivering measurable performance and power advantages in new designs.
AT25DF512C-XMHNGU-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, 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-TSSOP
AT25DF512C-XMHNGU-B FAQ
1.How can I place an order for AT25DF512C-XMHNGU-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF512C-XMHNGU-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-XMHNGU-B reliable?
The price and inventory of AT25DF512C-XMHNGU-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-XMHNGU-B is usually 5 days.
3.What payment methods are accepted for AT25DF512C-XMHNGU-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF512C-XMHNGU-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF512C-XMHNGU-B?
AT25DF512C-XMHNGU-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF512C-XMHNGU-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-XMHNGU-B?
For technical support, including AT25DF512C-XMHNGU-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF512C-XMHNGU-B requirements.
6.How does Aetrix verify that AT25DF512C-XMHNGU-B is sourced from the original manufacturer or authorized distributors?
All AT25DF512C-XMHNGU-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-XMHNGU-B meets industry standards.
7.What is the process for return or replacement of AT25DF512C-XMHNGU-B?
All AT25DF512C-XMHNGU-B units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF512C-XMHNGU-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-XMHNGU-B part is unused and in its original packaging.
Return procedure for AT25DF512C-XMHNGU-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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