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Winbond Electronics Corporation W25Q256FVEJF
- Part No.:
- W25Q256FVEJF
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q256FVEJF.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,112
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Product details
Overview
W25Q256FVEJF from Winbond is a 256M-bit (32MB) serial NOR flash memory supporting Standard/Dual/Quad SPI and QPI interfaces, organized into 131,072 × 256-byte pages with 4KB uniform sector erase, 104MHz max clock, and single 2.7–3.6V supply. It enables XIP execution in embedded boot code storage and firmware update applications.
For engineers reviewing the W25Q256FVEJF datasheet, W25Q256FVEJF pinout, W25Q256FVEJF application, or W25Q256FVEJF equivalent, key selection factors include 4-byte addressing support, Quad Enable (QE) bit configuration, /HOLD or /RESET dual-function pin behavior, and JEDEC SFDP register compatibility for auto-configuration.
Technical Context
The W25Q256FVEJF implements a flexible SPI-compatible command set with three address modes (3-byte, 4-byte, and ADP-configurable power-up default), where Quad I/O operation requires non-volatile QE bit = 1 in Status Register-2 - disabling /WP and /HOLD functions in favor of IO2/IO3. Its block diagram integrates page buffer, column/row decode, high-voltage generators, and three 256-byte security registers with OTP lock capability.
It supports hardware write protection via /WP pin (active-low, disabled in Quad mode), /HOLD pin (active-low pause control, also disabled in Quad mode), and software-controlled BP/TB/CMP bits with SRP-based status register locking. Erase/program suspend/resume allows interleaved background operations without interrupting host communication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte programmable pages |
| Interface Modes | Standard SPI (4-wire), Dual I/O SPI (4-wire), Quad I/O SPI (4-wire), QPI (4-wire); QE bit required for Quad I/O |
| Max Clock Frequency | 104 MHz (Standard/Dual/Quad SPI); enables 416 MB/s effective throughput in Quad I/O Fast Read mode |
| Erase Granularity | Uniform 4 KB sectors (8,192 total), 32 KB blocks (1,024), 64 KB blocks (512), and full-chip erase |
| Write Endurance | ≥100,000 program/erase cycles per sector, with ≥20-year data retention at +85°C |
| Supply Voltage | 2.7 V to 3.6 V; active current ≤4 mA typical, power-down current ≤1 µA typical |
| Operating Temp | –40°C to +85°C industrial grade; validated across full voltage and temperature range |
Pinout & Package
W25Q256FVEJF uses an 8-pad WSON 8×6-mm package (Package Code E), with exposed pad thermal design and RoHS-compliant matte tin finish. Pin 1 is /CS, located at top-left corner when marking side faces up and notch oriented left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; must transition high→low after power-up before first instruction; controls DO high-impedance state |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad SPI; shares function with IO1 |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware status register lock when low; repurposed as IO2 in Quad mode (QE=1) |
| 4 GND | Ground Reference | Primary signal and power return path; connects to exposed thermal pad on bottom of WSON package |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI; shares function with IO0 |
| 6 CLK | Serial Clock Input | Rising-edge sampled for input, falling-edge sampled for output; timing-critical for all SPI/QPI modes |
| 7 /HOLD or /RESET (IO3) | Hold or Reset Input / Bidirectional I/O | Active-low pause during active /CS; configurable as /RESET only in SOIC-16; repurposed as IO3 in Quad mode (QE=1) |
| 8 VCC | Power Supply | Single 2.7–3.6 V supply; decoupling capacitor required within 10 mm of pin per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead to 2 clocks per command, enabling true XIP with minimal latency penalty vs. parallel flash |
| 4-Byte Address Mode Support | Enables access beyond 16 MB boundary; ADP bit sets power-up default; B7h/E9h instructions switch dynamically |
| Erase/Program Suspend & Resume | Allows host to pause ongoing erase/program to service higher-priority reads/writes, then resume without data loss |
| JEDEC SFDP Register | Provides standardized, read-only parameter table (5Ah) for automatic driver initialization and timing calibration |
| 64-Bit Unique ID | Factory-programmed per-device serial number (4Bh) for secure firmware binding and anti-cloning validation |
| Three 256-Byte Security Registers | OTP-lockable storage for keys, certificates, or calibration data; protected by LB1–LB3 bits in Status Register-3 |
Applications
| Boot Code Storage | Firmware Over-the-Air (OTA) |
|---|---|
|
Use Scenario: Storing primary bootloader and initial firmware image in microcontroller-based edge devices requiring cold-start reliability. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable Quad I/O interface; delivers deterministic <50 ns instruction fetch latency under 104 MHz clock. Use Value: Eliminates external RAM copy step during boot, reducing BOM cost and startup time by >30% versus parallel flash solutions. |
Use Scenario: Securely storing delta updates and verified firmware images in connected IoT gateways with limited local storage. IC Role / Device Role / Timing Role: High-reliability field-upgrade storage with sector-level write protection and 100K-cycle endurance for frequent reprogramming. Use Value: Enables atomic firmware swap using dual-bank sector mapping, preventing bricking during power loss mid-update. |
| Industrial HMI Configuration | Automotive Telematics Logging |
|
Use Scenario: Retaining display layouts, language packs, and user preferences across power cycles in factory HMIs. IC Role / Device Role / Timing Role: Parameter and asset storage with hardware /WP pin lock and TB/BP-based sector protection against accidental overwrite. Use Value: Guarantees configuration persistence over 20 years at 85°C ambient, meeting IEC 61508 SIL-2 data integrity requirements. |
Use Scenario: Recording CAN bus diagnostics, GPS traces, and event-triggered logs in automotive telematics control units. IC Role / Device Role / Timing Role: High-endurance data logger with 4KB sector granularity for wear-leveling across 10+ GB lifetime log volume. Use Value: Achieves >100K erase cycles per sector, supporting 5+ years of daily 100 MB logging at automotive-grade temperature stability. |
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 WSON-8 package; supports DTR mode and octal word read (E3h); lacks QPI and SFDP register | Preferred for high-speed continuous streaming in audio/video buffers; not suitable for QPI-based XIP systems | Select when octal read bandwidth >416 MB/s is required and QPI/SFDP are unused; verify /HOLD pin behavior differs |
| S25FL256SAGMFV010 | 256Mb density, SOIC-16 and BGA packages; includes HyperBus interface option; supports 133 MHz DDR mode | Better suited for high-bandwidth MCU co-processor interfaces; requires different PCB layout and driver stack | Choose for designs needing >500 MB/s sustained throughput or HyperBus ecosystem compatibility; not pin-compatible |
Compared with MX25L25645GMI-10G and S25FL256SAGMFV010, W25Q256FVEJF offers unique QPI + SFDP + 4-byte address flexibility in compact WSON-8, making it optimal for space-constrained XIP boot applications where standardized auto-configuration and legacy SPI fallback are essential.
Availability
W25Q256FVEJF is available at Aetrix Electronics and suitable for boot code storage, firmware OTA updates, industrial HMI configuration, and automotive telematics logging requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.
Supply support for W25Q256FVEJF 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 manufacturer specializing in specialty DRAM, mobile DRAM, and serial flash memory, with global foundry partnerships and ISO 9001-certified wafer fabrication.
The W25Q series targets embedded systems requiring high-speed, low-power, and secure code/data storage; W25Q256FVEJF specifically addresses space-constrained applications needing XIP, 4-byte addressing, and robust security features.
FAQ
What is the package type and pin count of W25Q256FVEJF?
W25Q256FVEJF uses an 8-pad WSON 8×6-mm package (Package Code E) with exposed thermal pad. It has eight terminals: /CS, DO (IO1), /WP (IO2), GND, DI (IO0), CLK, /HOLD or /RESET (IO3), and VCC. This matches the standard pinout shown in Figure 1a of the datasheet and is distinct from SOIC-16 or TFBGA variants.
Does W25Q256FVEJF support 4-byte addressing, and how is it enabled?
Yes, W25Q256FVEJF supports 4-byte addressing via the Enter 4-Byte Address Mode instruction (B7h) and Exit instruction (E9h). The ADP bit in Status Register-3 determines the power-up default address mode. Unlike some competitors, this feature is fully supported in all interface modes including QPI, and is required to access memory above 16 MB.
How does the Quad Enable (QE) bit affect pin functionality on W25Q256FVEJF?
The QE bit (bit 1 of Status Register-2) must be set to 1 for Quad I/O operation. When QE = 1, pins /WP and /HOLD are reassigned as IO2 and IO3 respectively, disabling their hardware protection functions. This behavior is documented in Section 4.2 and Figure 1a, and applies identically to W25Q256FVEJF's WSON-8 package.
What security features does W25Q256FVEJF provide beyond basic write protection?
W25Q256FVEJF provides three 256-byte security registers with OTP lock bits (LB1–LB3), a 64-bit unique ID (read via 4Bh), JEDEC SFDP register (5Ah), and individual sector lock/unlock commands (36h/39h). These features enable cryptographic key storage, device authentication, and granular firmware partitioning - all confirmed in Sections 2, 7.1.8, and 8.2.48–8.2.52 of the datasheet.
Is W25Q256FVEJF compatible with standard SPI controllers without Quad or QPI support?
Yes, W25Q256FVEJF is fully backward-compatible with standard SPI controllers. It supports all Standard SPI instructions (e.g., 03h Read Data, 02h Page Program) using /CS, CLK, DI, and DO pins only. /WP and /HOLD remain functional in this mode, and no QE bit setting is required - making W25Q256FVEJF deployable in legacy systems with zero firmware changes.
W25Q256FVEJF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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, QPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 50µs, 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:
- 8-WSON (8x6)
W25Q256FVEJF FAQ
1.How can I place an order for W25Q256FVEJF through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256FVEJF 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 W25Q256FVEJF reliable?
The price and inventory of W25Q256FVEJF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256FVEJF is usually 5 days.
3.What payment methods are accepted for W25Q256FVEJF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256FVEJF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256FVEJF?
W25Q256FVEJF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256FVEJF 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 W25Q256FVEJF?
For technical support, including W25Q256FVEJF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256FVEJF requirements.
6.How does Aetrix verify that W25Q256FVEJF is sourced from the original manufacturer or authorized distributors?
All W25Q256FVEJF 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 W25Q256FVEJF meets industry standards.
7.What is the process for return or replacement of W25Q256FVEJF?
All W25Q256FVEJF units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256FVEJF, 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 W25Q256FVEJF part is unused and in its original packaging.
Return procedure for W25Q256FVEJF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q256FVEJF Tags
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