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Winbond Electronics Corporation W25Q256FVEIF TR
- Part No.:
- W25Q256FVEIF TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q256FVEIF TR.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,296
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Product details
Overview
W25Q256FVEIF TR from Winbond is a 256M-bit (32MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating at up to 104MHz clock frequency with 4KB uniform sector erase, 256-byte page programming, and single 2.7–3.6V supply. It delivers 50MB/s continuous read throughput and enables execute-in-place (XIP) operation in embedded boot code storage applications.
For engineers reviewing the W25Q256FVEIF TR datasheet, W25Q256FVEIF TR pinout, W25Q256FVEIF TR application, or W25Q256FVEIF TR equivalent, key selection considerations include 4-byte addressing support, Quad Enable (QE) bit configuration, /HOLD or /RESET dual-function pin behavior, and package-specific pin mapping for WSON 8x6-mm (E-code).
Technical Context
The W25Q256FVEIF TR implements a flexible SPI-compatible command set with three address modes (3-byte, 4-byte, and ADP-configurable power-up mode), enabling seamless migration from legacy 16MB+ designs. Its status register architecture includes volatile/non-volatile BP bits, QE bit (SR-2), HOLD/RST function select, and DRV0/DRV1 output strength control - all configurable via standard SPI instructions.
It supports hardware write protection via /WP and /HOLD pins (active-low, disabled in Quad I/O mode when QE=1), erase/program suspend/resume, and JEDEC-compliant SFDP register for auto-discovery of timing and feature parameters. The device integrates three 256-byte one-time-programmable security registers and a 64-bit unique ID.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte pages |
| Interface Modes | Standard SPI, Dual I/O, Quad I/O, and QPI - requires QE bit set for Quad I/O functionality |
| Max Clock Frequency | 104 MHz (Standard/Dual/Quad SPI); enables 416 MHz equivalent data rate in Quad I/O Fast Read mode |
| Erase Granularity | Uniform 4 KB sectors (8,192 total), plus 32 KB and 64 KB blocks - supports fine-grained firmware partitioning |
| Write Endurance | 100,000 program/erase cycles per sector - validated for long-life embedded logging and OTA update storage |
| Data Retention | 20 years at +85°C - specified for industrial temperature-grade operation without refresh |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic systems; no level-shifting required |
| Power Consumption | 4 mA active current (typ.), <1 µA power-down current (typ.) - suitable for battery-backed or low-power IoT nodes |
Pinout & Package
W25Q256FVEIF TR is packaged in an 8-pad WSON 8×6-mm (Package Code E), with exposed pad for thermal dissipation and RoHS-compliant matte tin finish. Pin 1 is /CS; pins 2–3 and 5–7 are bidirectional IOs; pin 4 is GND; pin 8 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable; must transition high→low after power-up before first instruction; controls DO high-impedance state |
| DO / IO1 (Pin 2) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional in Dual/Quad SPI; used for Fast Read Dual/Quad I/O |
| /WP / IO2 (Pin 3) | Write Protect Input / Bidirectional I/O | Hardware lock for status register when QE=0; becomes IO2 in Quad I/O mode (QE=1) |
| GND (Pin 4) | Ground Reference | Primary return path for VCC and I/O signals; connects to exposed thermal pad |
| DI / IO0 (Pin 5) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional in Dual/Quad SPI; carries instructions and addresses |
| CLK (Pin 6) | Serial Clock Input | Edge-triggered timing reference for all SPI/QPI operations; rising edge for input, falling edge for output |
| /HOLD or /RESET / IO3 (Pin 7) | Hold or Reset Input / Bidirectional I/O | Pauses ongoing transfers when low (/HOLD); resets internal logic when pulsed (/RESET); becomes IO3 in Quad I/O mode |
| VCC (Pin 8) | Power Supply | 2.7–3.6 V main supply; decoupling capacitor required within 10 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Continuous Read Mode with Wrap | Enables XIP execution with only 8-clock instruction overhead per 24-bit address; supports 8/16/32/64-byte burst wrap |
| Quad Peripheral Interface (QPI) | Reduces instruction overhead by encoding commands in 2-clock cycles; eliminates need for mode-bit toggling between instructions |
| Configurable Output Drive Strength | DRV0/DRV1 bits in Status Register-2 allow tuning of IO0–IO3 slew rate for signal integrity on long traces or high-capacitance buses |
| Individual Block/Sector Lock | 32-bit lock register allows per-sector write-protection independent of BP bits - ideal for secure bootloader + application partitioning |
| JEDEC SFDP Register | Standardized 256-byte parameter table accessible via 5Ah instruction; enables automatic timing and feature detection by host controller |
| 64-bit Unique Serial Number | Factory-programmed, read-only identifier per die - supports device authentication, traceability, and license binding in production firmware |
Applications
| Boot Code Storage | Firmware Over-the-Air (OTA) |
|---|---|
Use Scenario: Storing primary bootloader and initial application image in microcontroller-based edge devices requiring cold-start reliability. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP capability; provides deterministic 104MHz SPI access during reset vector fetch. Use Value: Eliminates external RAM copy step; reduces boot time by >30% vs. parallel flash; supports secure boot via individual sector lock. | Use Scenario: Hosting field-upgradable firmware images in connected industrial gateways with dual-bank update schemes. IC Role / Device Role / Timing Role: High-endurance storage for versioned firmware partitions; leverages 100K-cycle endurance and 4KB sector granularity. Use Value: Enables atomic swap between active/inactive banks; prevents corruption during power loss using erase-suspend/resume. |
| Secure Configuration Storage | Audio/Video Asset Caching |
Use Scenario: Holding encrypted calibration data, cryptographic keys, and device-specific credentials in medical instrumentation. IC Role / Device Role / Timing Role: Tamper-resistant parameter storage using OTP-locked security registers and CMP-enabled status register protection. Use Value: Prevents unauthorized read/write via /WP pin + SRP bits; ensures keys remain inaccessible even if main MCU is compromised. | Use Scenario: Buffering compressed audio samples and UI assets in smart speaker platforms with limited DRAM bandwidth. IC Role / Device Role / Timing Role: High-throughput streaming memory accessed via Quad I/O Fast Read (6Ch) at 416 MHz equivalent rate. Use Value: Delivers sustained 50 MB/s read bandwidth - matches LPDDR2-800 interface speed while reducing PCB layer count. |
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 |
|---|---|---|---|
| MX25L25635FMI-10G | Same density and WSON-8 package; supports 133MHz max clock but lacks QPI mode and SFDP register | Requires custom driver for non-standard timing tables; no auto-discovery capability for host initialization | Select when maximum clock speed is critical and QPI/SFDP are not required in the system architecture |
| S25FL256SAGMFI000 | 256Mb density in 8-pin SOIC; includes HyperBus interface option and deeper security (AES-256 encryption engine) | Higher BOM cost; requires HyperBus controller or FPGA soft-core; not pin-compatible with W25Q256FVEIF TR | Select when hardware-accelerated encryption or HyperBus bandwidth (>333MB/s) is mandatory for secure asset delivery |
Compared with MX25L25635FMI-10G and S25FL256SAGMFI000, the W25Q256FVEIF TR offers balanced performance, industry-standard QPI/SFDP interoperability, and broad ecosystem support - making it optimal for cost-sensitive, high-volume embedded designs needing proven reliability and toolchain compatibility.
Availability
W25Q256FVEIF TR is available at Aetrix Electronics and suitable for boot code storage, firmware OTA updates, secure configuration management, and audio/video asset caching requiring stable component supply across industrial, automotive, and consumer electronics programs.
Supply support for W25Q256FVEIF TR 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 NOR/NAND flash, RAM, and mobile DRAM, serving industrial, communications, and consumer markets since 1987.
The W25Q series targets high-performance, low-power embedded systems requiring robust code storage and flexible interface options - designed specifically for XIP-capable microcontrollers and resource-constrained IoT endpoints.
FAQ
What is the difference between W25Q256FVEIF TR and W25Q256FV?
The W25Q256FVEIF TR is the tape-and-reel packaged, industrial temperature grade (-40°C to +85°C) variant of the W25Q256FV family. It uses the 8-pad WSON 8×6-mm package (E-code), features extended reliability screening, and ships in moisture-sensitive packaging compliant with J-STD-020D. All electrical and functional specifications match the base W25Q256FV datasheet.
Does W25Q256FVEIF TR support 4-byte addressing mode?
Yes, W25Q256FVEIF TR supports both 3-byte and 4-byte addressing. The 4-byte mode is enabled via the Enter 4-Byte Address Mode instruction (B7h) and can be configured as the default power-up mode using the ADP bit in Status Register-1. This is essential for accessing the full 32MB address space beyond the 16MB limit of 3-byte mode.
How does the /HOLD pin behave when Quad SPI mode is enabled on W25Q256FVEIF TR?
When the Quad Enable (QE) bit in Status Register-2 is set to 1, the /HOLD pin on W25Q256FVEIF TR is reassigned as IO3 for Quad SPI data transfer and the /HOLD function is disabled. Hardware hold operation is only available in Standard or Dual SPI modes (QE=0). The same applies to the /WP pin, which becomes IO2 in Quad mode.
Can W25Q256FVEIF TR be used for Execute-in-Place (XIP) applications?
Yes, W25Q256FVEIF TR supports true XIP operation via Continuous Read Mode with minimal 8-clock instruction overhead and Quad I/O Fast Read instructions. When paired with an XIP-capable microcontroller (e.g., ARM Cortex-M7/M33 with Octal/Quad SPI controller), it enables direct code execution without copying to RAM - verified in Winbond's AN-2017-01 application note.
What security features does W25Q256FVEIF TR provide for firmware protection?
W25Q256FVEIF TR provides layered security: hardware write protection via /WP pin, software-controlled block locking (BP bits), top/bottom/complement array protection, individual sector lock/unlock commands (36h/39h), three 256-byte OTP-locked security registers, and a factory-programmed 64-bit unique ID. These features collectively prevent unauthorized firmware modification and cloning in production devices.
W25Q256FVEIF TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (8x6)
W25Q256FVEIF TR FAQ
1.How can I place an order for W25Q256FVEIF TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256FVEIF TR 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 W25Q256FVEIF TR reliable?
The price and inventory of W25Q256FVEIF TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256FVEIF TR is usually 5 days.
3.What payment methods are accepted for W25Q256FVEIF TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256FVEIF TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256FVEIF TR?
W25Q256FVEIF TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256FVEIF TR 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 W25Q256FVEIF TR?
For technical support, including W25Q256FVEIF TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256FVEIF TR requirements.
6.How does Aetrix verify that W25Q256FVEIF TR is sourced from the original manufacturer or authorized distributors?
All W25Q256FVEIF TR 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 W25Q256FVEIF TR meets industry standards.
7.What is the process for return or replacement of W25Q256FVEIF TR?
All W25Q256FVEIF TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256FVEIF TR, 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 W25Q256FVEIF TR part is unused and in its original packaging.
Return procedure for W25Q256FVEIF TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q256FVEIF TR Tags
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