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Winbond Electronics Corporation W25Q256FVCJQ TR
- Part No.:
- W25Q256FVCJQ TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25Q256FVCJQ TR.pdf
- Description:
- IC FLASH 256MBIT SPI 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,893
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Product details
Overview
W25Q256FVCJQ 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, 104MHz max clock, and single 2.7–3.6V supply - used for code XIP, firmware storage, and boot image retention in embedded microcontrollers.
For engineers reviewing the W25Q256FVCJQ TR datasheet, W25Q256FVCJQ TR pinout, W25Q256FVCJQ TR application, or W25Q256FVCJQ TR equivalent, key selection considerations include 4-byte addressing support, Quad Enable (QE) bit configuration, /HOLD or /RESET dual-function pin behavior in WSON-8 package, and JEDEC SFDP register compatibility for auto-configuration.
Technical Context
The W25Q256FVCJQ 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 devices. Its status register architecture includes volatile/non-volatile BP bits, QE bit (SR2[1]), HOLD/RST function select (SR2[6]), and DRV strength control (SR2[5:4]).
It supports true execute-in-place (XIP) via Continuous Read Mode with ≤8-clock instruction overhead and wrap lengths of 8/16/32/64 bytes. Erase/program suspend/resume functionality enables concurrent background operations, while three 256-byte security registers provide OTP-lockable firmware protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte pages |
| Interface Support | Standard/Dual/Quad SPI + QPI; requires QE=1 for Quad I/O mode |
| Max Clock Frequency | 104 MHz (SPI), enabling 416 MB/s effective throughput in Quad I/O Fast Read |
| 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 |
| Operating Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic systems without level shifting |
| Power Consumption | 4 mA active current (typ.), <1 µA power-down current (typ.) |
Pinout & Package
W25Q256FVCJQ TR is packaged in an 8-pad WSON 8×6 mm (Package Code E), with exposed thermal pad. Pin functions are defined per JEDEC MO-247, and all pins support 3.3 V tolerant I/O.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO/IOs when deasserted; must transition high→low after power-up before first instruction |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional in Dual/Quad SPI; shares pin with IO1 in all modes |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware write lock for status register when QE=0; becomes IO2 in Quad SPI mode (QE=1) |
| 4 GND | Ground Reference | Primary signal return; connects to PCB ground plane; required for stable VCC reference |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional in Dual/Quad SPI; shares pin with IO0 in all modes |
| 6 CLK | Serial Clock Input | Edge-triggered timing source; rising edge for input, falling edge for output; supports up to 104 MHz |
| 7 /HOLD or /RESET (IO3) | Hold or Reset Input / Bidirectional I/O | Pauses ongoing SPI transfer when low (/HOLD); resets device when pulsed low (/RESET); becomes IO3 in Quad SPI (QE=1) |
| 8 VCC | Power Supply | 2.7–3.6 V main supply; requires local 100 nF ceramic decoupling capacitor near pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead to 2 clocks per command, enabling deterministic XIP latency and eliminating mode switching between instructions |
| Erase/Program Suspend & Resume | Allows foreground read access during background erase/program, critical for real-time firmware update without system stall |
| JEDEC SFDP Register | Enables automatic driver initialization by host MCU - eliminates hard-coded timing parameters and improves cross-platform compatibility |
| 64-bit Unique Serial Number | Provides hardware-rooted device identity for secure boot, anti-cloning, and field firmware version tracking |
| Volatile/Non-volatile Status Register Bits | Supports field-upgradable protection schemes: BP bits can be set non-volatilely for permanent sector lock, or volatilely for temporary lockdown |
| Continuous Read with Wrap | Delivers burst-aligned streaming (8/16/32/64-byte wrap) directly to CPU cache lines, reducing bus arbitration and improving code fetch efficiency |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Image |
|---|---|
Use Scenario: Storing certified firmware images and configuration data in programmable logic controllers operating continuously in harsh environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic, low-latency instruction fetch via Quad SPI XIP to ARM Cortex-M7 core. Use Value: 20-year data retention and 100K endurance ensure firmware integrity across 15+ year product lifecycles without refresh; 4KB sector granularity enables atomic OTA patching. |
Use Scenario: Holding safety-critical boot code and sensor calibration tables for camera/radar ECUs requiring ASIL-B compliance. IC Role / Device Role / Timing Role: Primary boot flash accessed at power-on reset via QPI interface to minimize boot time and meet ISO 26262 startup timing constraints. Use Value: SFDP register allows auto-negotiated timing setup; unique ID enables secure key binding; security registers store encrypted keys resistant to physical probing. |
| Medical Imaging System Configuration | Network Router Embedded OS |
Use Scenario: Storing DICOM metadata templates, UI localization strings, and regulatory audit logs in portable ultrasound devices. IC Role / Device Role / Timing Role: Parameter and data storage device with hardware write-protection (/WP pin + BP bits) preventing accidental overwrite during clinical operation. Use Value: Top/bottom array protection and complement protect (CMP) allow independent lockdown of calibration vs. user data regions; 1µA power-down extends battery runtime. |
Use Scenario: Hosting Linux kernel, initramfs, and configuration overlays in carrier-grade Ethernet switches with hot-swap capability. IC Role / Device Role / Timing Role: High-throughput firmware repository interfaced to MIPS or ARM SoC via Dual SPI for parallel instruction/data fetch. Use Value: 50 MB/s continuous read rate exceeds NAND+RAM hybrid solutions; suspend/resume enables zero-downtime firmware upgrade during traffic forwarding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L25645GMI-10G | Same density (256Mb), 104MHz clock, but uses different QE bit location (SR1[6]) and lacks /RESET pin in 8-pin SOIC/WSON | No integrated /RESET function in WSON package; requires external reset controller for full functional parity | Select if existing design uses Macronix toolchain and prioritizes pinout consistency over integrated reset |
| S25FL256SAGMFI000 | 256Mb, 80MHz max clock, Cypress (Infineon) Serial Flash with configurable 128-byte page write buffer and different SFDP layout | Lower max frequency limits XIP performance; SFDP structure requires driver rework; supports octal DTR mode not available on W25Q256FV | Select only when migrating to Infineon ecosystem or requiring octal DTR for future scalability |
Compared with MX25L25645GMI-10G and S25FL256SAGMFI000, the W25Q256FVCJQ TR offers superior XIP throughput via 104MHz Quad I/O, integrated /HOLD or /RESET flexibility in WSON-8, and broader industry SFDP adoption - making it optimal for new designs prioritizing boot speed, layout simplicity, and driver reuse.
Availability
W25Q256FVCJQ TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot image retention, and medical imaging configuration management requiring stable component supply across extended product lifecycles.
Supply support for W25Q256FVCJQ 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 DRAM, mobile DRAM, and serial flash memory solutions since 1987.
The W25Q256FV family targets high-performance embedded systems requiring reliable, low-power, pin-efficient code and data storage - optimized for XIP, OTA updates, and secure firmware deployment.
FAQ
What is the package type and lead count of the W25Q256FVCJQ TR?
The W25Q256FVCJQ TR uses an 8-pad WSON (8×6 mm) package (JEDEC MO-247, Package Code E) with no leads - surface-mount pads only. It features an exposed thermal pad on the bottom for enhanced heat dissipation and mechanical stability. This compact footprint supports high-density PCB layouts typical in space-constrained embedded applications.
Does the W25Q256FVCJQ TR support 4-byte addressing, and how is it enabled?
Yes, the W25Q256FVCJQ 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 E9h. The Power-Up Address Mode (ADP) bit in Status Register-2 determines default mode after reset - set ADP=1 for automatic 4-byte mode on power-up. This is essential for accessing the full 32MB address space.
How does the /HOLD pin function differ between Standard SPI and Quad SPI modes on the W25Q256FVCJQ TR?
In Standard/Dual SPI mode (QE=0), pin 7 functions as /HOLD to pause ongoing transfers. In Quad SPI mode (QE=1), that same pin becomes IO3 for quad data I/O, and /HOLD functionality is disabled. The W25Q256FVCJQ TR does not retain /HOLD in Quad mode - designers must use software flow control or alternate signaling if hold behavior is required during Quad operation.
What is the role of the Quad Enable (QE) bit in the W25Q256FVCJQ TR, and where is it located?
The Quad Enable (QE) bit is bit 1 of Status Register-2 (SR2). When QE=1, the W25Q256FVCJQ TR enables Quad SPI mode, repurposing /WP (pin 3) as IO2 and /HOLD (pin 7) as IO3. QE is non-volatile and persists across power cycles unless explicitly cleared. It must be set before issuing any Quad I/O instructions like 6Bh or EBh.
Can the W25Q256FVCJQ TR be used for secure firmware storage, and what hardware features support this?
Yes, the W25Q256FVCJQ TR supports secure firmware storage via three 256-byte Security Registers with OTP lock bits (LB3–LB1), 64-bit unique serial number per device, and configurable write protection (BP bits, CMP, TB, SRP). These features enable cryptographic key storage, firmware signature verification, and tamper-resistant parameter locking - validated in Winbond's Secure Flash documentation for W25Q256FV series.
W25Q256FVCJQ TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 24-TBGA
- Packaging:
- Tape & Reel (TR)
- 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:
- 24-TFBGA (6x8)
W25Q256FVCJQ TR FAQ
1.How can I place an order for W25Q256FVCJQ TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256FVCJQ 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 W25Q256FVCJQ TR reliable?
The price and inventory of W25Q256FVCJQ TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256FVCJQ TR is usually 5 days.
3.What payment methods are accepted for W25Q256FVCJQ TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256FVCJQ TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256FVCJQ TR?
W25Q256FVCJQ TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256FVCJQ 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 W25Q256FVCJQ TR?
For technical support, including W25Q256FVCJQ TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256FVCJQ TR requirements.
6.How does Aetrix verify that W25Q256FVCJQ TR is sourced from the original manufacturer or authorized distributors?
All W25Q256FVCJQ 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 W25Q256FVCJQ TR meets industry standards.
7.What is the process for return or replacement of W25Q256FVCJQ TR?
All W25Q256FVCJQ TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256FVCJQ 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 W25Q256FVCJQ TR part is unused and in its original packaging.
Return procedure for W25Q256FVCJQ TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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