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Winbond Electronics Corporation W25Q256FVFIQ TR
- Part No.:
- W25Q256FVFIQ TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
W25Q256FVFIQ TR.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,403
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Product details
Overview
W25Q256FVFIQ TR 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 granularity, operating from 2.7V to 3.6V, and rated for -40°C to +85°C industrial temperature range.
For engineers reviewing the W25Q256FVFIQ TR datasheet, W25Q256FVFIQ TR pinout, W25Q256FVFIQ TR application, or W25Q256FVFIQ TR equivalent, this device is selected for embedded code storage, XIP execution, firmware update storage, and secure parameter retention where high-speed serial interface, flexible protection, and long data retention (>20 years) are required.
Technical Context
The W25Q256FVFIQ TR implements a quad-peripheral interface (QPI) mode enabling 2-clock instruction cycles and reducing command overhead for true execute-in-place (XIP) operation. It supports both 3-byte and 4-byte addressing modes, with configurable /HOLD or /RESET functionality on Pin 7 in 8-pin packages depending on QE bit state.
Its dual/quad I/O architecture allows up to 104MHz SPI clock frequency, delivering 208MB/s (Dual I/O) and 416MB/s (Quad I/O) effective throughput using Fast Read Dual/Quad I/O instructions. Erase/program suspend/resume capability enables concurrent background operations without halting host access.
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 SPI, Quad SPI, and QPI - selectable via instruction set and QE bit |
| Max Clock Frequency | 104 MHz SPI clock; enables 50 MB/s continuous read rate with wrap mode |
| Erase Granularity | Uniform 4 KB sectors (8,192 total), plus 32 KB and 64 KB blocks |
| Write Endurance | 100,000 program/erase cycles per sector |
| Data Retention | 20+ years at +85°C, verified per JEDEC JESD22-A117 |
| Supply Voltage | 2.7 V to 3.6 V single supply; active current ≤4 mA, power-down ≤1 µA (typ.) |
Pinout & Package
W25Q256FVFIQ TR is supplied in an 8-pad WSON 8×6-mm package (Package Code E), RoHS-compliant and lead-free, with exposed pad for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO output and standby current when high |
| 2 DO (IO1) | Data Output / I/O1 | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad SPI |
| 3 /WP (IO2) | Write Protect Input / I/O2 | Hardware lock for status register when QE=0; becomes IO2 in Quad SPI mode |
| 4 GND | Ground Reference | Primary return path for VCC and I/O signals; connects to exposed pad |
| 5 DI (IO0) | Data Input / I/O0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI |
| 6 CLK | Serial Clock Input | Rising-edge sampling for input, falling-edge latching for output in all SPI modes |
| 7 /HOLD or /RESET (IO3) | Hold or Reset Input / I/O3 | Pauses ongoing operation when low (HOLD); resets internal logic when pulsed (RESET); becomes IO3 in Quad SPI |
| 8 VCC | Power Supply | 2.7–3.6 V main supply; decoupling capacitor required within 10 mm |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead to 2 clocks per command, enabling deterministic XIP latency |
| Continuous Read with Wrap | Supports 8/16/32/64-byte burst wrap, minimizing address retransmission for sequential access |
| Erase/Program Suspend & Resume | Allows host to pause background erase/program and service urgent reads/writes without data loss |
| Security Register Set | Three 256-byte OTP-lockable registers for keys, certificates, or calibration data with individual block locks |
| JEDEC SFDP & Unique ID | Self-describing parameter table (SFDP) simplifies driver porting; 64-bit factory-programmed unique serial number |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Image |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Non-volatile boot memory providing fast, reliable code fetch during cold start and field updates over CAN or Ethernet. Use Value: 4KB sector granularity enables atomic firmware patching; 20-year data retention ensures lifetime reliability without refresh cycles. | Use Scenario: Holding boot loader and safety-critical perception firmware for camera/radar processing units in autonomous driving systems. IC Role / Device Role / Timing Role: Primary XIP-capable flash executing real-time vision algorithms directly from memory to reduce DRAM dependency and boot latency. Use Value: 104MHz Quad SPI + Continuous Read delivers >40 MB/s sustained read bandwidth, meeting ASIL-B timing constraints. |
| Medical Imaging Device Calibration Data | Smart Energy Meter Secure Key Storage |
Use Scenario: Retaining sensor calibration coefficients, gamma tables, and DICOM metadata across power cycles in portable ultrasound and MRI equipment. IC Role / Device Role / Timing Role: Parameter storage with hardware write-protection and OTP-locked security registers preventing unauthorized recalibration. Use Value: Individual sector lock (36h/39h) and CMP/TB BP bits allow selective protection of clinical data zones while permitting field updates to UI assets. | Use Scenario: Securing AES-128 keys, firmware signatures, and tariff tables in utility-grade smart meters subject to IEC 62056 and DLMS/COSEM standards. IC Role / Device Role / Timing Role: Tamper-resistant key vault leveraging three 256-byte security registers with OTP lock bits (LB1–LB3) and JEDEC UID binding. Use Value: Hardware-enforced write protection (SRP0/SRP1 + /WP pin) prevents runtime key overwrite; SFDP enables auto-negotiated crypto driver initialization. |
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/WSON packages; supports DTR mode but lacks QPI; max clock 80 MHz | No native QPI reduces XIP efficiency; DTR requires controller support not present in legacy MCUs | Prefer W25Q256FVFIQ TR when QPI or >80 MHz throughput is required; MX25L25645GMI-10G suits cost-sensitive designs with simpler SPI controllers |
| S25FL256SAGMFI200 | Includes HyperBus interface (166 MHz DDR), deeper security (AES-256), but no /HOLD pin in 8-pin variant | HyperBus enables higher bandwidth but demands dedicated PHY; lacks pin-compatible HOLD function for multi-device arbitration | Choose W25Q256FVFIQ TR for SPI/QPI ecosystem compatibility and /HOLD-based bus sharing; select S25FL256SAGMFI200 only when HyperBus infrastructure exists |
Compared with MX25L25645GMI-10G and S25FL256SAGMFI200, the W25Q256FVFIQ TR uniquely balances QPI-enabled XIP performance, 4KB sector flexibility, and dual-function /HOLD or /RESET in compact WSON - making it optimal for resource-constrained industrial and automotive hosts requiring deterministic boot and field-upgrade resilience.
Availability
W25Q256FVFIQ TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot image loading, and medical imaging calibration data retention requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for W25Q256FVFIQ 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 SPI NOR/NAND flash, RAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.
The W25Q series was designed specifically for high-reliability embedded systems requiring fast, secure, and flexible serial code storage - emphasizing XIP capability, sector-level protection, and extended temperature operation.
FAQ
What is the maximum SPI clock frequency supported by the W25Q256FVFIQ TR?
The W25Q256FVFIQ TR supports up to 104 MHz SPI clock frequency in Standard, Dual, and Quad SPI modes. At this rate, Fast Read Quad I/O achieves ~416 MB/s effective throughput (104 MHz × 4 data lines). This specification is validated across the full -40°C to +85°C operating range and requires proper PCB layout with controlled impedance and termination.
Does the W25Q256FVFIQ TR support 4-byte addressing, and how is it enabled?
Yes, the W25Q256FVFIQ TR supports both 3-byte and 4-byte addressing modes. 4-byte mode is entered using the Enter 4-Byte Address Mode instruction (B7h) and exited with Exit 4-Byte Address Mode (E9h). The Power-Up Address Mode (ADP) bit in Status Register-3 determines default startup mode; ADP=1 selects 4-byte mode at power-on.
How does the /HOLD pin function differ between Standard SPI and Quad SPI modes on the W25Q256FVFIQ TR?
In Standard/Dual SPI mode (QE=0), Pin 7 functions as /HOLD to pause ongoing operations. In Quad SPI mode (QE=1), that same pin becomes IO3 for data I/O, and /HOLD functionality is disabled. The /HOLD feature is unavailable during QPI mode, as all four I/O pins are dedicated to bidirectional data transfer.
Can the W25Q256FVFIQ TR be used for Execute-in-Place (XIP) applications, and what features enable this?
Yes, the W25Q256FVFIQ TR is explicitly designed for XIP. Key enablers include Continuous Read Mode with 8-clock address overhead, Quad Peripheral Interface (QPI) for reduced command latency, and Fast Read Quad I/O instructions achieving >40 MB/s sustained read rates - all allowing microcontrollers to execute code directly from flash without copying to RAM.
What security mechanisms does the W25Q256FVFIQ TR provide for protecting firmware or calibration data?
The W25Q256FVFIQ TR provides layered security: hardware /WP pin lock, volatile/non-volatile status register protection (SRP0/SRP1), top/bottom/complement array protection (TB/CMP/BP bits), individual sector lock (36h/39h), and three 256-byte OTP-lockable security registers. These features collectively prevent unauthorized read, write, or erase of critical firmware and calibration data.
W25Q256FVFIQ TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- 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:
- 16-SOIC
W25Q256FVFIQ TR FAQ
1.How can I place an order for W25Q256FVFIQ TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256FVFIQ 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 W25Q256FVFIQ TR reliable?
The price and inventory of W25Q256FVFIQ TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256FVFIQ TR is usually 5 days.
3.What payment methods are accepted for W25Q256FVFIQ TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256FVFIQ TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256FVFIQ TR?
W25Q256FVFIQ TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256FVFIQ 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 W25Q256FVFIQ TR?
For technical support, including W25Q256FVFIQ TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256FVFIQ TR requirements.
6.How does Aetrix verify that W25Q256FVFIQ TR is sourced from the original manufacturer or authorized distributors?
All W25Q256FVFIQ 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 W25Q256FVFIQ TR meets industry standards.
7.What is the process for return or replacement of W25Q256FVFIQ TR?
All W25Q256FVFIQ TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256FVFIQ 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 W25Q256FVFIQ TR part is unused and in its original packaging.
Return procedure for W25Q256FVFIQ TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q256FVFIQ TR Tags
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