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Winbond Electronics Corporation W25Q256JWBIQ
- Part No.:
- W25Q256JWBIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25Q256JWBIQ.pdf
- Description:
- IC FLASH 256MBIT SPI 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,567
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Product details
Overview
W25Q256JWBIQ from Winbond is a 1.8V, 256M-bit (32MB) serial NOR flash memory supporting standard, dual, and quad SPI interfaces with up to 133MHz clock frequency and 4-byte addressing mode. It features uniform 4KB sectors, 32KB/64KB blocks, 100K program-erase cycles, and 20-year data retention. Designed for code execution (XIP), firmware storage, and parameter logging in space-constrained industrial systems.
For engineers reviewing the W25Q256JWBIQ datasheet, W25Q256JWBIQ pinout, W25Q256JWBIQ application, or W25Q256JWBIQ equivalent, key selection criteria include 1.7–1.95V supply compatibility, quad I/O timing compliance, hardware write-protect (/WP) and hold (/HOLD) signal behavior, and SOIC-16 vs. WSON-8 package pin mapping differences.
Technical Context
The W25Q256JWBIQ implements a flexible SPI command set with separate instruction tables for 3-byte and 4-byte address modes, supporting Fast Read Quad I/O (6Bh/6Ch) at up to 532MB/s effective throughput. Its status register architecture includes volatile/non-volatile BP bits, Quad Enable (QE), Output Driver Strength (DRV1/DRV0), and Security Register Lock (LB3–LB1) controls.
It integrates JEDEC-standard SFDP register for auto-configurable parameters, 64-bit unique ID per device, and three 256-byte OTP-locked security registers. Erase/program suspend/resume capability enables concurrent background operations without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte pages |
| Supply Voltage | 1.7 V to 1.95 V - enables direct integration with 1.8V logic domains without level shifting |
| Max Clock Frequency | 133 MHz for Quad I/O - delivers 532 MB/s effective read bandwidth via 4-bit parallel data transfer |
| Erase Granularity | 4 KB sector / 32 KB block / 64 KB block - supports fine-grained firmware partitioning and OTA update safety |
| Endurance & Retention | 100,000 program-erase cycles; >20 years data retention at +85°C - validated for industrial lifecycle requirements |
| Operating Temperature | −40°C to +105°C - qualified for extended industrial and automotive under-hood applications |
| Security Features | Three 256-byte OTP security registers, 64-bit unique ID, SFDP register, and individual sector lock/unlock commands |
Pinout & Package
W25Q256JWBIQ is supplied in 16-pin SOIC 300-mil (Package Code F), featuring dedicated /RESET, /CS, CLK, DI (IO0), DO (IO1), /WP (IO2), /HOLD (IO3), VCC, and GND pins. The SOIC package includes two NC pins and supports hardware reset independent of status register configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | /HOLD or /RESET (IO3) | Hold function active low in standard/dual SPI; dedicated hardware reset input in SOIC-16 when enabled |
| 2 | VCC | 1.7–1.95V core power supply - decoupling required within 10 mm of pin |
| 3 | /RESET | Dedicated hardware reset input - asserts full internal state reset on ≥1 µs low pulse |
| 7 | /CS | Chip select input - must transition high→low before instruction acceptance; tracks VCC during power sequencing |
| 8 | DO (IO1) | Data output in standard SPI; bidirectional I/O1 in dual/quad modes - requires pull-up for tri-state control |
| 9 | /WP (IO2) | Hardware write-protect input - active low; enables sector-level protection when combined with BP bits |
| 10 | GND | Reference ground - must be connected to system ground plane with low-inductance path |
| 15 | DI (IO0) | Data input in standard SPI; bidirectional I/O0 in dual/quad modes - used for all instruction/address/data writes |
| 16 | CLK | Serial clock input - edge-triggered; max 133 MHz for quad I/O; duty cycle 40–60% required |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O Interface | Enables 4-bit parallel data transfer using IO0–IO3; requires QE bit set in Status Register-2 |
| Erase/Program Suspend | Allows pausing active erase/program operations to service high-priority reads - critical for real-time firmware updates |
| Individual Sector Lock | Per-sector lock/unlock via 36h/39h instructions - prevents accidental overwrite of calibration or security-critical regions |
| Power-down Mode | Ultra-low 1 µA typical standby current - extends battery life in always-on IoT edge nodes |
| JEDEC SFDP Support | Self-describing parameter table accessible via 5Ah instruction - enables automatic driver initialization without hard-coded timing |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Image |
|---|---|
|
Use Scenario: Storing boot firmware and configuration data for programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable quad SPI interface enabling fast boot from flash without RAM copy. Use Value: 4KB sector granularity allows safe field updates of single functional modules while preserving runtime-critical control logic. |
Use Scenario: Holding boot images and sensor calibration data for autonomous driving ECUs requiring AEC-Q100 Grade 2 reliability. IC Role / Device Role / Timing Role: Primary boot memory with hardware write-protect (/WP) and individual sector lock to prevent corruption during over-the-air updates. Use Value: −40°C to +105°C rating and 100K endurance ensure reliable operation across vehicle lifetime and thermal cycling. |
| Medical Device Parameter Logging | Smart Energy Meter Firmware |
|
Use Scenario: Recording patient therapy settings and usage history in portable diagnostic equipment with strict data integrity requirements. IC Role / Device Role / Timing Role: Secure parameter storage using three OTP-locked 256-byte security registers and 64-bit unique ID for device traceability. Use Value: SFDP register enables automatic timing adaptation across production batches, reducing qualification effort for Class II medical certification. |
Use Scenario: Hosting firmware and tariff tables in utility-grade smart meters deployed in uncontrolled outdoor cabinets. IC Role / Device Role / Timing Role: High-reliability code storage with hardware reset (/RESET) and power-cycle robustness per IEC 62056 standards. Use Value: 20-year data retention and 1.7–1.95V supply tolerance ensure accurate billing data persistence over 15+ year deployments. |
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 | 3V supply (2.7–3.6V); no /RESET pin in standard SOIC-8; lacks SFDP and security registers | Suitable only for legacy 3V systems; not drop-in compatible due to voltage and feature mismatch | Select only if existing 3V design prohibits voltage translation and security features are unnecessary |
| S25FL256SAGMFI000 | 1.8V supply; includes HyperBus interface option; higher 166MHz read speed but larger 8x6mm TFBGA footprint | Better for high-throughput applications needing >532MB/s burst reads; requires PCB redesign for TFBGA | Choose when bandwidth exceeds W25Q256JWBIQ limits and board layout allows 24-ball TFBGA placement |
Compared with MX25L25645GMI-10G, W25Q256JWBIQ offers lower voltage operation, integrated security, and standardized SFDP-critical for new 1.8V designs. Against S25FL256SAGMFI000, it provides identical density and voltage but in smaller SOIC/WSON packages, trading peak speed for footprint efficiency.
Availability
W25Q256JWBIQ is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot image hosting, and medical device parameter logging requiring stable component supply across long-lifecycle programs.
Supply support for W25Q256JWBIQ 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 solutions since 1987.
The W25Q series targets high-performance, low-voltage embedded systems requiring robust code storage, secure parameter retention, and flexible SPI interface options for industrial, automotive, and medical applications.
FAQ
What is the supply voltage range supported by the W25Q256JWBIQ?
The W25Q256JWBIQ operates from 1.7 V to 1.95 V. This narrow 1.8V nominal range eliminates need for external level shifters in modern low-power microcontroller designs and ensures compatibility with I/O banks rated for 1.8V logic. Operation outside this range may cause undefined behavior or permanent damage.
Does the W25Q256JWBIQ support hardware reset, and how is it implemented?
Yes, the W25Q256JWBIQ supports hardware reset via a dedicated /RESET pin in SOIC-16 and TFBGA packages. Driving /RESET low for ≥1 µs forces the device into its power-on state, terminating all ongoing operations. In WSON packages, hardware reset is unavailable; only software reset (66h + 99h) is supported.
How does the Quad Enable (QE) bit affect pin functionality on the W25Q256JWBIQ?
The QE bit (bit 1 of Status Register-2) must be set to enable Quad SPI mode. When QE = 1, the /WP pin becomes IO2 and the /HOLD pin becomes IO3. If QE = 0, those pins retain their hardware protection functions. Writing QE requires Write Enable (06h) followed by Write Status Register-2 (31h) with correct SRP/SRL configuration.
What package options are available for the W25Q256JWBIQ, and which one includes the /RESET pin?
W25Q256JWBIQ is offered in SOIC-16 (F), WSON-8 (P/E), TFBGA-24 (B/C), and WLCSP-32 (Y). Only SOIC-16 and TFBGA packages include a dedicated /RESET pin. WSON and WLCSP variants rely solely on software reset commands and do not expose /RESET externally.
Can the W25Q256JWBIQ be used for Execute-in-Place (XIP) applications?
Yes, the W25Q256JWBIQ supports XIP via Dual/Quad SPI Fast Read instructions (3Bh/6Bh and variants), enabling direct code execution from flash without copying to RAM. Its 133MHz clock and 532MB/s effective bandwidth meet real-time latency requirements for MCU boot and firmware overlay use cases.
W25Q256JWBIQ 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:
- 5ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TFBGA (6x8)
W25Q256JWBIQ FAQ
1.How can I place an order for W25Q256JWBIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JWBIQ 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 W25Q256JWBIQ reliable?
The price and inventory of W25Q256JWBIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JWBIQ is usually 5 days.
3.What payment methods are accepted for W25Q256JWBIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JWBIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JWBIQ?
W25Q256JWBIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JWBIQ 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 W25Q256JWBIQ?
For technical support, including W25Q256JWBIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JWBIQ requirements.
6.How does Aetrix verify that W25Q256JWBIQ is sourced from the original manufacturer or authorized distributors?
All W25Q256JWBIQ 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 W25Q256JWBIQ meets industry standards.
7.What is the process for return or replacement of W25Q256JWBIQ?
All W25Q256JWBIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JWBIQ, 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 W25Q256JWBIQ part is unused and in its original packaging.
Return procedure for W25Q256JWBIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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