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Winbond Electronics Corporation W25Q256JVBIQ
- Part No.:
- W25Q256JVBIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25Q256JVBIQ.pdf
- Description:
- IC FLASH 256MBIT SPI 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:271
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Product details
Overview
W25Q256JVBIQ from Winbond is a 256M-bit (32MB) serial NOR flash memory supporting standard, dual, and quad SPI interfaces with 4KB uniform sectors, 133MHz max clock, and 66MB/s continuous read throughput. It operates from 2.7V–3.6V, supports XIP execution, and features hardware write protection, 64-bit unique ID, and three 256-byte security registers - deployed in embedded boot code storage and firmware update systems.
For engineers reviewing the W25Q256JVBIQ datasheet, W25Q256JVBIQ pinout, W25Q256JVBIQ application, or W25Q256JVBIQ equivalent, key selection criteria include 4-byte addressing support, Quad Enable (QE) bit configuration, /RESET pin availability per package, sector-level lock granularity, and JEDEC SFDP register compliance for automated configuration.
Technical Context
The W25Q256JVBIQ implements a SPI-compatible command set with mode-agnostic instruction decoding, enabling seamless transition between standard (DI/DO), dual (IO0/IO1), and quad (IO0–IO3) I/O modes via status register control. Its architecture includes volatile/non-volatile status registers (SR1/SR2/SR3), extended address register (EAR), and configurable output driver strength (DRV1/DRV0).
It supports both 3-byte and 4-byte address modes: 4-byte mode is entered via B7h instruction and retained across power cycles via ADP bit, while EAR enables 3-byte mode access to >16MB regions. Erase suspend/resume, individual sector lock (36h/39h), and global lock (7Eh/98h) enable robust field firmware updates without full chip erase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte pages |
| Interface Speed | Up to 133 MHz SPI clock; 266 MHz dual I/O, 532 MHz quad I/O equivalent |
| Erase Granularity | Uniform 4 KB sectors (8,192 total), 32 KB blocks (2,048), 64 KB blocks (1,024) |
| Data Retention | 20+ years at +85°C; validated per JEDEC JESD22-A117 |
| Endurance | 100,000 program/erase cycles per sector |
| Operating Voltage | 2.7 V to 3.6 V single supply; <1 µA typical standby current |
| Temperature Range | –40°C to +85°C industrial grade operation |
| Security Features | 64-bit unique ID, three 256-byte OTP-lockable security registers, SFDP v1.6 compliant |
Pinout & Package
W25Q256JVBIQ is supplied in an 8-pad WSON 8×6 mm package (Package Code E), with no dedicated /RESET pin - /HOLD (Pin 7) serves dual function as /HOLD in standard/dual SPI and IO3 in quad SPI mode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable; high-impedance DO/IO outputs when deasserted; required low-to-high transition before new instruction acceptance |
| DO (IO1) (Pin 2) | Bidirectional Data I/O | Output in standard SPI; IO1 in dual/quad SPI; high-impedance during /HOLD assertion |
| /WP (IO2) (Pin 3) | Bidirectional Data I/O / Hardware Protect | Input for status register write protection when QE=0; becomes IO2 in quad SPI when QE=1 |
| GND (Pin 4) | Ground Reference | Primary return path for VCC and I/O signals; decoupling capacitor must be placed adjacent to this pin |
| DI (IO0) (Pin 5) | Bidirectional Data I/O | Input in standard SPI; IO0 in dual/quad SPI; used for instruction/address/data input on CLK rising edge |
| CLK (Pin 6) | Serial Clock Input | Edge-triggered timing reference; supports SPI modes 0 and 3; max 133 MHz frequency |
| /HOLD (IO3) (Pin 7) | Bidirectional Data I/O / Hold Control | Pauses ongoing read/write when low and /CS active; becomes IO3 in quad SPI when QE=1; not available in quad mode |
| VCC (Pin 8) | Power Supply | 2.7–3.6 V supply; requires local 100 nF ceramic decoupling; tracks /CS during power-up/down per JEDEC JESD8-12 |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI XIP Support | Enables direct code execution from flash via 66 MB/s continuous read; eliminates need for external RAM buffering in resource-constrained MCUs |
| 4-Byte Address Mode | Persistent 4-byte addressing (ADP bit) avoids EAR management overhead; essential for >16 MB linear addressing in bootloaders and RTOS kernels |
| Erase/Program Suspend | Allows interruption of long erase cycles (e.g., 64 KB block erase) to service time-critical reads; resumes from exact byte offset post-interrupt |
| Individual Sector Lock | 36h/39h instructions permit per-sector write lock/unlock without affecting adjacent sectors - critical for secure OTA firmware partitioning |
| JEDEC SFDP Compliance | Self-describing parameter table (5Ah) enables automatic driver initialization in Linux MTD and Zephyr flash subsystems without hard-coded timing constants |
| Hardware Write Protection | /WP pin + BP/TB/CMP bits provide layered protection: hardware-level lock for boot sectors, software-configurable for application partitions |
Applications
| Boot Code Storage | Firmware Update Partition |
|---|---|
Use Scenario: Storing primary bootloader and initial firmware image in MCU-based edge gateways requiring cold-start reliability. IC Role / Device Role / Timing Role: Non-volatile boot source accessed via XIP-capable quad SPI during reset vector fetch; timing-critical setup of DDR and peripherals. Use Value: 133 MHz quad SPI enables sub-100 ms boot time; 4KB sector granularity allows atomic bootloader updates without risking corruption of active runtime code. |
Use Scenario: Isolating field-upgradable application firmware in industrial PLCs where rollback safety and integrity verification are mandatory. IC Role / Device Role / Timing Role: Dual-bank storage partition holding active and candidate firmware images; accessed via dual SPI for fast download and CRC validation. Use Value: Erase suspend/resume permits real-time diagnostics during background firmware write; security registers store cryptographic keys for signed image verification. |
| Secure Configuration Storage | Audio/Video Asset Caching |
Use Scenario: Holding device-specific calibration data, MAC addresses, and TLS certificates in medical IoT sensors with strict data sovereignty requirements. IC Role / Device Role / Timing Role: Tamper-resistant configuration vault using OTP-locked security registers; accessed only during factory provisioning and secure boot. Use Value: Three 256-byte security registers with independent OTP locks prevent unauthorized overwrite of cryptographic material; 64-bit unique ID enables device attestation. |
Use Scenario: Caching compressed audio prompts and UI assets in smart home hubs to reduce cloud dependency and latency. IC Role / Device Role / Timing Role: High-throughput asset cache accessed via fast read quad I/O (6Bh); co-located with application code in same die for deterministic latency. Use Value: 66 MB/s sequential read sustains concurrent playback and UI rendering; uniform 4KB sectors simplify wear leveling across mixed read/write workloads. |
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 | 256 M-bit, 104 MHz max clock, no /HOLD pin in 8-pin SOIC, lacks SFDP v1.6 and 64-bit UID | Supports basic XIP but lacks erase suspend and individual sector lock; limited bootloader flexibility | Select when cost sensitivity outweighs advanced update safety features and automated driver initialization |
| S25FL256SAGMFIR10 | 256 M-bit, 80 MHz max clock, dedicated /RESET pin in all packages, Cypress-compatible command set | Requires different status register bit mapping (e.g., QE in SR1 vs SR2); incompatible SFDP layout | Choose for legacy Cypress ecosystem compatibility or where hardware reset assurance is mandatory across all package variants |
Compared with MX25L25645GMI-10G and S25FL256SAGMFIR10, W25Q256JVBIQ delivers higher bandwidth (133 MHz vs ≤104 MHz), richer security (64-bit UID, three OTP registers), and superior update resilience (erase suspend, individual sector lock), making it optimal for next-generation secure boot and field-upgrade architectures.
Availability
W25Q256JVBIQ is available at Aetrix Electronics and suitable for industrial control systems, automotive telematics modules, and medical edge devices requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for W25Q256JVBIQ 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 serial NOR/NAND flash, RAM, and mobile DRAM.
The W25Q series targets high-performance embedded systems needing reliable, low-power, feature-rich serial flash for boot code, firmware, and secure data storage - optimized for MCU integration and industrial longevity.
FAQ
What is the maximum SPI clock frequency supported by the W25Q256JVBIQ?
The W25Q256JVBIQ supports up to 133 MHz for standard, dual, and quad SPI operations. At this frequency, quad SPI achieves an effective data rate of 532 MHz (133 MHz × 4), enabling 66 MB/s continuous read throughput. This specification is validated across the full –40°C to +85°C operating range and requires proper PCB layout with controlled impedance and minimized trace length.
Does the W25Q256JVBIQ support 4-byte addressing, and how is it enabled?
Yes, the W25Q256JVBIQ supports 4-byte addressing via the B7h instruction to enter 4-byte mode and E9h to exit. The ADP bit in Status Register-3 determines whether 4-byte mode persists after power cycle: ADP=1 retains it, ADP=0 reverts to 3-byte mode. Unlike EAR-dependent 3-byte mode extensions, 4-byte mode provides native linear addressing for the full 256 M-bit array without register management overhead.
How does the /HOLD pin function differ between standard and quad SPI modes on the W25Q256JVBIQ?
In standard and dual SPI modes, Pin 7 functions as /HOLD - asserting it low pauses ongoing read/write operations while maintaining internal state. In quad SPI mode (QE=1), the same pin becomes IO3 and loses /HOLD functionality. This behavior is documented in Section 3.2 and Figure 1a of the datasheet and requires firmware to disable /HOLD usage when quad I/O is active.
What security mechanisms does the W25Q256JVBIQ provide for firmware protection?
The W25Q256JVBIQ provides multiple firmware protection layers: hardware write protection via /WP pin, non-volatile block protect bits (BP0–BP3), top/bottom/complement array locking, individual sector lock/unlock (36h/39h), global lock (7Eh/98h), and three 256-byte OTP-lockable security registers. These features collectively prevent unauthorized modification of boot code and firmware partitions during field deployment and OTA updates.
Is the W25Q256JVBIQ pin-compatible with earlier W25Q256JW or W25Q256FV variants?
No, the W25Q256JVBIQ is not pin-compatible with W25Q256JW or W25Q256FV. While all share the same 8-pin WSON 8×6 mm footprint, the JV revision introduces functional changes to Pin 7 (/HOLD or IO3) and updated status register mapping (e.g., QE bit location in SR2). Migration requires validation of /HOLD usage, QE initialization sequence, and security register access commands per Revision G datasheet.
W25Q256JVBIQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 24-TBGA
- Packaging:
- Tray
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TFBGA (6x8)
W25Q256JVBIQ FAQ
1.How can I place an order for W25Q256JVBIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JVBIQ 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 W25Q256JVBIQ reliable?
The price and inventory of W25Q256JVBIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JVBIQ is usually 5 days.
3.What payment methods are accepted for W25Q256JVBIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JVBIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JVBIQ?
W25Q256JVBIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JVBIQ 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 W25Q256JVBIQ?
For technical support, including W25Q256JVBIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JVBIQ requirements.
6.How does Aetrix verify that W25Q256JVBIQ is sourced from the original manufacturer or authorized distributors?
All W25Q256JVBIQ 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 W25Q256JVBIQ meets industry standards.
7.What is the process for return or replacement of W25Q256JVBIQ?
All W25Q256JVBIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JVBIQ, 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 W25Q256JVBIQ part is unused and in its original packaging.
Return procedure for W25Q256JVBIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q256JVBIQ Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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