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Winbond Electronics Corporation W25Q256JWPIQ
- Part No.:
- W25Q256JWPIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q256JWPIQ.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,342
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Product details
Overview
W25Q256JWPIQ 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. Used for XIP code execution, firmware storage, and parameter logging in industrial embedded systems.
For engineers reviewing the W25Q256JWPIQ datasheet, W25Q256JWPIQ pinout, W25Q256JWPIQ application, or W25Q256JWPIQ equivalent, key selection considerations include 1.7–1.95V supply compatibility, /RESET pin availability in SOIC/TFBGA packages, Quad I/O timing compliance, and hardware write-protection via /WP and status register bits.
Technical Context
The W25Q256JWPIQ implements a SPI-compatible command set with dedicated instructions for fast read (e.g., 6Bh Quad Output, EBh Quad I/O), page program (02h/32h), and sector/block erase (20h/52h/D8h). It supports both volatile and non-volatile status register configuration, including Quad Enable (QE) bit in Status Register-2 required for IO2/IO3 functionality.
Its architecture includes a 256-byte page buffer, SFDP register for discoverable parameters, three 256-byte security registers with OTP locks, and 64-bit unique ID. The device operates across –40°C to +105°C with <1µA typical power-down current and supports erase/program suspend-resume for concurrent background operations.
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 low-power operation in battery-backed or energy-constrained industrial designs |
| Max Clock Frequency | 133 MHz for Quad I/O - delivers up to 532 Mbps effective throughput using Fast Read Quad I/O (6Ch) |
| Erase Granularity | 4 KB sectors, 32 KB and 64 KB blocks - supports fine-grained firmware partitioning and OTA update staging |
| Endurance & Retention | 100,000 program-erase cycles; >20 years data retention at +85°C - suitable for long-life industrial deployments |
| Operating Temperature | –40°C to +105°C - qualified for Industrial Plus grade applications requiring extended thermal margin |
| Security Features | Three 256-byte OTP-lockable security registers, 64-bit unique ID, SFDP register - enables secure boot key storage and device authentication |
Pinout & Package
W25Q256JWPIQ is supplied in an 8-pad WSON 6×5-mm package (Package Code P), with exposed pad for thermal dissipation. Pin functions are defined per JEDEC MS-012 and Winbond specification Revision I.
| 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 instruction acceptance |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional I/O1 in Dual/Quad SPI; requires QE=1 for Quad mode use |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware lock for status register writes; becomes IO2 when QE=1; active-low protection |
| 4 GND | Ground Reference | Primary signal and power return path; connects to PCB ground plane for noise immunity |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional I/O0 in Dual/Quad SPI; used for all instruction/address/data input |
| 6 CLK | Serial Clock Input | Edge-triggered timing source; rising edge for input, falling edge for output in all SPI modes |
| 7 /HOLD or /RESET (IO3) | Hold Control / Reset Input / Bidirectional I/O | HOLD function active-low during Standard/Dual SPI; becomes IO3 in Quad mode (QE=1); dedicated /RESET only on SOIC/TFBGA variants |
| 8 VCC | Power Supply | 1.7–1.95 V core supply; decoupling capacitor (0.1 µF) required within 10 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O Interface | Enables 532 Mbps effective bandwidth via 4-bit parallel data transfer on IO0–IO3, reducing SPI bus loading vs. standard SPI |
| Erase/Program Suspend | Allows temporary halt of active erase/program to service urgent reads or interrupts, then resume without data loss |
| Individual Sector Lock | Per-sector write protection via 36h/39h instructions - isolates critical firmware sections from accidental overwrite |
| Power Supply Lock-Down | Automatically disables write/erase when VCC drops below 1.65 V - prevents corruption during brown-out conditions |
| Discoverable Parameters (SFDP) | Standardized JEDEC JESD216-compliant register enables automatic driver configuration without hard-coded timing tables |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Image |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments with wide temperature swings. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable Quad SPI interface enabling direct execution from flash, reducing external RAM footprint. Use Value: 100K endurance and 20-year retention ensure reliable operation over 15+ year equipment lifecycles; 4KB sector granularity allows atomic firmware patch updates. |
Use Scenario: Securing boot code and calibration data in Class II medical imaging devices requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Trusted firmware repository with OTP-locked security registers holding cryptographic keys and device-specific calibration constants. Use Value: 64-bit unique ID enables per-device audit trails; hardware /WP and status register protection prevent unauthorized reprogramming during service. |
| Smart Energy Meter Data Logging | Automotive ADAS Camera Module |
Use Scenario: Recording time-stamped consumption metrics and event logs in ANSI C12.22-compliant smart meters operating continuously at +85°C ambient. IC Role / Device Role / Timing Role: Parameter and log storage with wear-leveling support via 4KB sector erase flexibility and suspend/resume capability. Use Value: <1 µA power-down current extends battery backup life; –40°C to +105°C rating ensures reliability in outdoor meter enclosures. |
Use Scenario: Storing camera ISP firmware and lens calibration profiles in automotive-grade ADAS vision modules subject to AEC-Q100 stress testing. IC Role / Device Role / Timing Role: High-speed firmware loader interfacing with SoC via Quad SPI to meet boot-time requirements under ISO 26262 ASIL-B timing constraints. Use Value: 133 MHz Quad I/O clock supports sub-100 ms firmware load; industrial plus grade qualification meets automotive thermal and reliability thresholds. |
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 | 3.3 V supply; no /RESET pin in 8-pin SOIC; 104 MHz max Quad SPI clock | Lacks 1.8 V operation and extended temperature support; not suitable for low-voltage or +105°C designs | Select only if system uses 3.3 V rail and does not require Industrial Plus grade operation |
| S25FL256SAGMFV001 | 1.8 V supply; 133 MHz Quad SPI; includes built-in ECC and sector protection lock bits | Higher pin count (16-pin SOIC); integrated ECC adds overhead but improves reliability in safety-critical contexts | Prefer when functional safety (IEC 61508 SIL2+) or enhanced error correction is mandated |
Compared with MX25L25645GMI-10G and S25FL256SAGMFV001, the W25Q256JWPIQ uniquely combines 1.8 V operation, +105°C rating, 8-pin WSON compactness, and full Quad I/O feature set - making it optimal for space- and power-constrained industrial edge nodes where voltage scaling and thermal headroom are critical.
Availability
W25Q256JWPIQ is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, smart grid infrastructure, and automotive ADAS modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for W25Q256JWPIQ 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, communications, and consumer markets since 1987.
The W25Q256JWPIQ belongs to Winbond's high-performance 25Q family designed specifically for industrial-plus applications demanding low-voltage operation, extended temperature range, robust security, and high-speed Quad I/O interface.
FAQ
What is the supply voltage range for the W25Q256JWPIQ?
The W25Q256JWPIQ operates from 1.7 V to 1.95 V. This narrow 1.8 V nominal range enables ultra-low power consumption and compatibility with modern low-voltage SoCs and PMICs. Operation outside this window may cause undefined behavior or data corruption; the internal power supply lock-down feature disables writes if VCC falls below 1.65 V.
Does the W25Q256JWPIQ support hardware reset functionality?
The W25Q256JWPIQ does not include a dedicated /RESET pin in its 8-pad WSON 6×5-mm package (P-code). Hardware reset is only available on SOIC-16 and TFBGA variants. For W25Q256JWPIQ, system-level reset must be implemented via software commands (66h + 99h) or power cycle - a design constraint confirmed in Winbond's Package Description section 3.2.
How is Quad SPI mode enabled on the W25Q256JWPIQ?
Quad SPI mode is enabled by setting the Quad Enable (QE) bit in Status Register-2 using instruction 31h. When QE = 1, pins /WP and /HOLD become IO2 and IO3 respectively. This change is non-volatile if written to the non-volatile portion of the register. The W25Q256JWPIQ datasheet explicitly states that QE must be set before issuing Quad I/O instructions like 6Bh or EBh.
What packaging options are available for the W25Q256JWPIQ?
The W25Q256JWPIQ is shipped exclusively in the 8-pad WSON 6×5-mm package (Package Code P), identified by top-side marking "W25Q256JW" and date code. Other variants like SOIC-16 (F), TFBGA (B/C), or WLCSP (Y) carry different orderable part numbers (e.g., W25Q256JWSIQ) and are not interchangeable with W25Q256JWPIQ due to pinout and /RESET presence differences.
Can the W25Q256JWPIQ be used for Execute-in-Place (XIP) applications?
Yes, the W25Q256JWPIQ supports XIP via Dual and Quad SPI interfaces, enabling direct code execution from flash without copying to RAM. Its 133 MHz Quad I/O clock and Fast Read Quad I/O instructions (6Ch/ECh) deliver sustained bandwidth sufficient for real-time MCU instruction fetch. XIP performance is validated in Winbond's Functional Descriptions section 6.1.3 and Application Notes AN201–AN203.
W25Q256JWPIQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- 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:
- 8-WSON (6x5)
W25Q256JWPIQ FAQ
1.How can I place an order for W25Q256JWPIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JWPIQ 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 W25Q256JWPIQ reliable?
The price and inventory of W25Q256JWPIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JWPIQ is usually 5 days.
3.What payment methods are accepted for W25Q256JWPIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JWPIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JWPIQ?
W25Q256JWPIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JWPIQ 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 W25Q256JWPIQ?
For technical support, including W25Q256JWPIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JWPIQ requirements.
6.How does Aetrix verify that W25Q256JWPIQ is sourced from the original manufacturer or authorized distributors?
All W25Q256JWPIQ 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 W25Q256JWPIQ meets industry standards.
7.What is the process for return or replacement of W25Q256JWPIQ?
All W25Q256JWPIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JWPIQ, 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 W25Q256JWPIQ part is unused and in its original packaging.
Return procedure for W25Q256JWPIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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