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Winbond Electronics Corporation W25Q256JVFJQ
- Part No.:
- W25Q256JVFJQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
W25Q256JVFJQ.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,348
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Product details
Overview
W25Q256JVFJQ from Winbond is a 256 M-bit (32 MB) serial NOR flash memory supporting standard, dual, and quad SPI interfaces with 133 MHz clock rate, 4 KB uniform sector erase granularity, and hardware write protection via /WP and /HOLD pins. It operates from 2.7–3.6 V across –40°C to +105°C and is used for code execution in place (XIP), firmware storage, and parameter retention in industrial embedded systems.
For engineers reviewing the W25Q256JVFJQ datasheet, W25Q256JVFJQ pinout, W25Q256JVFJQ application, or W25Q256JVFJQ equivalent, key selection considerations include 4-byte addressing support, Quad Enable (QE) bit configuration, /RESET pin availability in SOIC/TFBGA packages, and JEDEC SFDP register compliance for auto-configuration.
Technical Context
The W25Q256JVFJQ implements a flexible SPI interface with three operational modes: standard (DI/DO), dual (IO0/IO1), and quad (IO0–IO3), where IO2 and IO3 are remapped from /WP and /HOLD only when the non-volatile Quad Enable (QE) bit in Status Register-2 is set. It supports both 3-byte and 4-byte address modes, with 4-byte mode enabled via B7h instruction and persistent via ADP bit in Status Register-2.
Its architecture includes 131,072 pages of 256 bytes each, organized into 8,192 erasable 4 KB sectors and 512 erasable 64 KB blocks. Erase/program suspend-resume capability enables concurrent background operations, while three 256-byte security registers with OTP locks provide tamper-resistant storage for keys or calibration data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB) - supports full firmware images for mid-complexity microcontrollers without external memory expansion. |
| SPI Clock Rate | Up to 133 MHz - enables 532 MB/s effective throughput in Quad I/O mode, sufficient for real-time XIP of boot code. |
| Erase Granularity | Uniform 4 KB sectors - allows fine-grained firmware update partitioning and robust OTA rollback without full chip erase. |
| Write Endurance | 100,000 program-erase cycles per sector - ensures >10-year field reliability for infrequently updated configuration or logging data. |
| Data Retention | 20 years at +85°C - validated for long-life industrial deployments including smart meters and PLCs. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic rails and tolerant of brown-out conditions in unregulated power domains. |
| Operating Temp | –40°C to +105°C - qualified for Industrial Plus grade applications including automotive body control modules. |
Pinout & Package
W25Q256JVFJQ uses the 16-pin SOIC 300-mil package (Package Code F), featuring dedicated /RESET, /CS, CLK, DI (IO0), DO (IO1), /WP (IO2), /HOLD (IO3), VCC, and GND pins, with eight NC pins. The /RESET pin is hardware-asserted and independent of internal state.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable; high-impedance DO during deselect; must transition high→low after power-up before first instruction. |
| CLK | Serial Clock Input | Drives all SPI timing; supports Mode 0 and Mode 3; requires stable edge alignment with /CS transitions. |
| DI (IO0) | Data Input / Bidirectional I/O | Standard SPI input only; becomes bidirectional IO0 in Dual/Quad mode; used for instructions, addresses, and data writes. |
| DO (IO1) | Data Output / Bidirectional I/O | Standard SPI output only; becomes bidirectional IO1 in Dual/Quad mode; carries status, ID, and read data. |
| /WP | Write Protect Input / IO2 | Hardware lock for Status Register; remapped to IO2 in Quad mode when QE=1; active-low, requires pull-up if unused. |
| /HOLD | Hold Input / IO3 | Pauses ongoing SPI transfer; remapped to IO3 in Quad mode when QE=1; active-low, ignored when QE=1. |
| /RESET | Hardware Reset Input | Dedicated asynchronous reset; forces power-on state regardless of internal operation; min. 1 µs pulse required. |
| VCC | Power Supply | 2.7–3.6 V supply; decoupling capacitor (0.1 µF) required within 5 mm of pin for stable high-speed operation. |
| GND | Ground Reference | Return path for all I/O and core logic; must be low-impedance and tied to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI with QE bit | Non-volatile QE bit in Status Register-2 enables persistent 4-line I/O mode, eliminating boot-time reconfiguration overhead. |
| 4-byte addressing | Supports B7h/E9h instructions and ADP bit for seamless access beyond 16 MB; eliminates software address wrap-around logic. |
| JEDEC SFDP register | Standardized flash parameter table accessible via 5Ah instruction - enables automatic driver initialization in Linux/Bare Metal. |
| 64-bit unique ID | Factory-programmed immutable serial number - used for device authentication, secure boot binding, and field traceability. |
| Security registers | Three 256-byte OTP-lockable regions - store cryptographic keys or calibration coefficients with irreversible write-protection. |
Applications
| Industrial HMI Firmware Storage | Automotive Body Control Module |
|---|---|
Use Scenario: Storing GUI assets, boot loader, and application firmware in a panel-mounted HMI running RTOS. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP-capable Quad SPI interface enabling direct execution of UI logic. Use Value: 133 MHz Quad I/O delivers >50 MB/s random read speed, reducing boot time by 40% vs. standard SPI flash. |
Use Scenario: Holding configuration profiles, sensor calibration tables, and diagnostic logs in a door module ECU. IC Role / Device Role / Timing Role: Parameter and event log storage with hardware write protection on /WP and sector-level locking. Use Value: 4 KB uniform sectors allow independent update of calibration data without disturbing firmware partitions. |
| Medical Infusion Pump Boot Memory | Smart Energy Meter Firmware Vault |
Use Scenario: Secure boot image storage requiring tamper evidence and regulatory audit trail in Class II medical device. IC Role / Device Role / Timing Role: Certified firmware vault using OTP-locked security registers and 20-year data retention guarantee. Use Value: Three 256-byte security registers with OTP locks meet IEC 62304 traceability requirements for critical code signing keys. |
Use Scenario: Storing AMI firmware, tariff tables, and encrypted metering history in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: High-reliability field-upgradable memory with 100K-cycle endurance and –40°C to +105°C operation. Use Value: Industrial Plus temperature rating ensures uninterrupted operation in outdoor meter enclosures exposed to desert heat. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L25645GMI-10G | Same density and SOIC-16 package; supports 104 MHz max clock; no /RESET pin in 8-pin variants; lacks SFDP register. | Requires manual driver configuration; not suitable for auto-discovery Linux platforms; lower max throughput (416 MB/s vs. 532 MB/s). | Select when legacy SPI controller lacks SFDP support and /RESET is unused; verify timing margins at 104 MHz. |
| S25FL256SAGMFI000 | 256 M-bit with 80 MHz clock; includes configurable deep power-down; supports octal DDR mode (not W25Q256JVFJQ); different security register layout. | Better ultra-low-power sleep current (<100 nA), but slower random read; octal mode requires new PCB routing and controller IP. | Prefer for battery-powered endpoints needing sub-µA sleep; avoid if existing design relies on Quad I/O timing or SFDP auto-init. |
Compared with MX25L25645GMI-10G and S25FL256SAGMFI000, W25Q256JVFJQ delivers higher sustained bandwidth via 133 MHz Quad I/O, standardized SFDP-based initialization, and integrated /RESET - making it optimal for new industrial designs prioritizing boot speed, configurability, and thermal robustness.
Availability
W25Q256JVFJQ is available at Aetrix Electronics and suitable for industrial HMIs, automotive ECUs, medical infusion pumps, smart energy meters, and IoT gateways requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for W25Q256JVFJQ 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
Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty memory solutions, including SPI NOR/NAND flash, RAM, and mobile DRAM, serving industrial, automotive, and communications markets since 1987.
The W25Q series targets high-performance embedded systems requiring reliable, fast, and secure code and data storage - designed specifically for XIP, OTA updates, and safety-critical firmware vaulting in harsh environments.
FAQ
What is the maximum SPI clock frequency supported by W25Q256JVFJQ?
W25Q256JVFJQ supports up to 133 MHz in standard, dual, and quad SPI modes. At this rate, quad I/O achieves an effective throughput of 532 MB/s (133 MHz × 4 lines). This specification is guaranteed across the full –40°C to +105°C operating range and requires proper PCB layout with controlled impedance and minimized trace length.
Does W25Q256JVFJQ include a hardware reset pin?
Yes, W25Q256JVFJQ includes a dedicated /RESET pin in its SOIC-16 package (Package Code F), which is electrically isolated from internal logic states. Driving /RESET low for ≥1 µs forces immediate return to power-on reset state, terminating all ongoing operations - a feature confirmed in Section 4.6 and Figure 1b of the official datasheet.
How is 4-byte addressing enabled on W25Q256JVFJQ?
4-byte addressing on W25Q256JVFJQ is enabled via the B7h instruction (Enter 4-Byte Address Mode), and persistence is controlled by the ADP bit in Status Register-2. When ADP = 1, the device powers up in 4-byte mode; when ADP = 0, it defaults to 3-byte mode. This behavior is documented in Sections 6.1.4 and 7.1.6 of the datasheet.
What is the purpose of the Quad Enable (QE) bit in W25Q256JVFJQ?
The Quad Enable (QE) bit resides in Status Register-2 and must be set to 1 to activate quad I/O mode. When QE = 1, the /WP and /HOLD pins become IO2 and IO3 respectively. This bit is non-volatile and survives power cycles - a requirement explicitly stated in Section 6.1.3 and Table 7.1.4 of the datasheet.
Can W25Q256JVFJQ be used for execute-in-place (XIP) applications?
Yes, W25Q256JVFJQ supports true XIP via Fast Read Quad I/O (EBh) and Fast Read Quad Output (6Bh) instructions, delivering >50 MB/s random read performance. Its uniform 4 KB sectors and suspend/resume capability allow deterministic interrupt latency during code execution - a key design objective confirmed in Section 1 and Feature list.
W25Q256JVFJQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 256Mbit
- Memory Organization:
- 32M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
W25Q256JVFJQ FAQ
1.How can I place an order for W25Q256JVFJQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JVFJQ 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 W25Q256JVFJQ reliable?
The price and inventory of W25Q256JVFJQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JVFJQ is usually 5 days.
3.What payment methods are accepted for W25Q256JVFJQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JVFJQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JVFJQ?
W25Q256JVFJQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JVFJQ 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 W25Q256JVFJQ?
For technical support, including W25Q256JVFJQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JVFJQ requirements.
6.How does Aetrix verify that W25Q256JVFJQ is sourced from the original manufacturer or authorized distributors?
All W25Q256JVFJQ 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 W25Q256JVFJQ meets industry standards.
7.What is the process for return or replacement of W25Q256JVFJQ?
All W25Q256JVFJQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JVFJQ, 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 W25Q256JVFJQ part is unused and in its original packaging.
Return procedure for W25Q256JVFJQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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