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Winbond Electronics Corporation W25Q256JVFIM
- Part No.:
- W25Q256JVFIM
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
W25Q256JVFIM.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,800
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Product details
Overview
W25Q256JVFIM from Winbond is a 256M-bit (32MB) serial NOR flash memory supporting Standard/Dual/Quad SPI interfaces, organized into 131,072 × 256-byte pages with uniform 4KB sector erase, 32KB/64KB block erase, and chip erase. It operates from 2.7V to 3.6V, draws ≤1µA in power-down mode, and supports true XIP execution in embedded boot code storage applications.
For engineers reviewing the W25Q256JVFIM datasheet, W25Q256JVFIM pinout, W25Q256JVFIM application, or W25Q256JVFIM equivalent, key selection considerations include 133MHz SPI clock support, Quad Enable (QE) bit configuration for IO2/IO3 remapping, 4-byte address mode activation via B7h instruction, and hardware reset availability only in SOIC/TFBGA packages-not in the WSON variant.
Technical Context
The W25Q256JVFIM implements a flexible SPI interface architecture supporting three operational modes: Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3), with mode selection governed by instruction type and QE bit state in Status Register-2. Its 4KB sector granularity enables fine-grained data parameter storage alongside firmware code.
It integrates volatile/non-volatile status register bits (BP0–BP3, TB, CMP, SRP, QE, ADS, ADP, WPS, DRV0/DRV1), supports Erase/Program Suspend & Resume, and includes three 256-byte one-time-programmable (OTP) security registers with individual lock bits (LB1–LB3), all accessible via dedicated SPI instructions like 42h/44h/48h.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), enabling full firmware image storage for mid-tier microcontrollers |
| SPI Clock Frequency | Up to 133 MHz - delivers 532 MB/s effective throughput in Quad I/O Fast Read mode |
| Erase Granularity | Uniform 4 KB sectors (8,192 total), allowing independent parameter updates without disturbing adjacent code |
| Write Endurance | Minimum 100,000 program-erase cycles per sector - suitable for field-upgradable firmware |
| Data Retention | Greater than 20 years at +25°C - ensures long-term reliability in industrial deployments |
| Supply Voltage | 2.7 V to 3.6 V - compatible with standard 3.3 V logic rails and low-power system designs |
| Power-Down Current | Typical 1 µA - critical for battery-backed or energy-harvesting applications |
Pinout & Package
W25Q256JVFIM uses the 8-pad WSON 8×6-mm package (Package Code E), with no dedicated /RESET pin - /HOLD (Pin 7) serves dual function as hold input or optional reset input only when configured in Standard/Dual SPI mode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable; high-impedance DO during deselect; must transition high→low after power-up to accept new instructions |
| DO / IO1 (Pin 2) | Serial Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional in Dual/Quad SPI; requires QE=1 for Quad I/O use |
| /WP / IO2 (Pin 3) | Write Protect Input / Bidirectional I/O | Hardware write protection active low; becomes IO2 in Quad mode when QE=1 |
| GND (Pin 4) | Ground Reference | Primary return path for VCC and I/O signals; must be low-impedance for stable timing |
| DI / IO0 (Pin 5) | Serial Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional in Dual/Quad SPI; used for instruction/address/data loading |
| CLK (Pin 6) | Serial Clock Input | Edge-triggered timing source; supports SPI Mode 0 and Mode 3; max 133 MHz frequency |
| /HOLD / IO3 (Pin 7) | Hold Input / Bidirectional I/O | Pauses ongoing SPI transaction when low; becomes IO3 in Quad mode when QE=1; not available as /RESET |
| VCC (Pin 8) | Power Supply | Single 2.7–3.6 V supply; decoupling capacitor required within 10 mm of pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI Interface | Enables 4-line data transfer (IO0–IO3) at up to 532 MB/s effective rate, accelerating boot code fetch and XIP execution |
| 4-Byte Address Mode | Activated via B7h instruction; required to access full 256M-bit address space beyond 3-byte limit (16MB boundary) |
| Erase/Program Suspend | Allows temporary halt of background erase/program operations to service higher-priority read requests without data loss |
| Security Registers | Three 256-byte OTP registers with individual LB1–LB3 locks, supporting secure key storage and firmware signature validation |
| JEDEC SFDP Support | Provides standardized, discoverable parameter table (5Ah instruction) for automatic driver configuration in modern SoCs and MCUs |
Applications
| Boot Code Storage | Firmware Over-the-Air (OTA) |
|---|---|
Use Scenario: Storing primary bootloader and application firmware for ARM Cortex-M or RISC-V microcontrollers requiring fast startup and reliable nonvolatile storage. IC Role / Device Role / Timing Role: Nonvolatile code storage device interfaced via Quad SPI; provides deterministic read latency for XIP execution and supports 133 MHz clock for rapid shadowing. Use Value: Enables sub-100ms cold boot via 4KB sector-aligned firmware partitioning and eliminates need for parallel NOR flash in space-constrained PCBs. | Use Scenario: Hosting update images in connected IoT edge nodes where field firmware upgrades must preserve integrity and allow rollback on failure. IC Role / Device Role / Timing Role: Dual-role storage: holds active firmware and staging area for validated updates; leverages sector-level erase isolation to prevent corruption during partial writes. Use Value: Supports atomic OTA updates using 4KB sector locking (36h/39h) and status register protection (SRP), ensuring fail-safe recovery without external supervision. |
| Industrial HMI Configuration | Medical Device Parameter Storage |
Use Scenario: Persisting UI layout definitions, calibration tables, and user preferences in factory HMIs where frequent reconfiguration is required but firmware remains static. IC Role / Device Role / Timing Role: Parameter storage peripheral using 4KB sector erase; accessed via Standard SPI for simplicity and robustness in noisy environments. Use Value: Allows independent update of configuration data without erasing firmware, reducing maintenance downtime and enabling version-controlled parameter management. | Use Scenario: Storing FDA-compliant device settings, usage logs, and sensor calibration coefficients in portable diagnostic equipment with strict data integrity requirements. IC Role / Device Role / Timing Role: Secure data vault using OTP security registers (42h/48h) and hardware write-protection (/WP pin + BP bits) to prevent unauthorized modification. Use Value: Meets IEC 62304 traceability requirements via 64-bit unique ID (4Bh) and tamper-evident write-lock mechanisms, eliminating need for external EEPROM. |
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 (256Mb), 104 MHz max SPI clock, no hardware /RESET pin in 8-pin SOIC, lacks SFDP register | Lower throughput limits XIP performance; no auto-configurable driver support via SFDP | Select when cost sensitivity outweighs speed and configurability needs; verify JEDEC ID compatibility in bootloader |
| S25FL256SAGMFV001 | 256Mb, 80 MHz SPI clock, includes configurable deep power-down mode, supports octal DDR mode (not in W25Q256JVFIM) | Slower random read; deeper sleep current (100 nA vs 1 µA) but requires additional mode configuration | Prefer for ultra-low-power battery applications where peak bandwidth is secondary to standby current |
Compared with MX25L25645GMI-10G and S25FL256SAGMFV001, W25Q256JVFIM delivers highest SPI throughput (133 MHz), built-in SFDP for plug-and-play driver initialization, and integrated security registers - making it optimal for performance-critical, secure, and rapidly deployable embedded systems.
Availability
W25Q256JVFIM is available at Aetrix Electronics and suitable for boot code storage, firmware OTA updates, and industrial HMI configuration requiring stable component supply across automotive-grade temperature ranges and multi-year production cycles.
Supply support for W25Q256JVFIM 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 NOR/NAND flash, RAM, and mobile DRAM, serving industrial, communications, and consumer markets since 1987.
The W25Q series targets high-performance embedded systems requiring fast, secure, and flexible serial flash - designed specifically for XIP-capable microcontrollers, real-time firmware updates, and parameter storage with hardware-level protection.
FAQ
What is the maximum SPI clock frequency supported by the W25Q256JVFIM?
The W25Q256JVFIM supports a maximum SPI clock frequency of 133 MHz in Standard, Dual, and Quad SPI modes. At this rate, Quad SPI Fast Read achieves an effective throughput of 532 MB/s (133 MHz × 4 lines). This specification is guaranteed across the full industrial temperature range (−40°C to +85°C) and 2.7–3.6 V supply, as verified in the AC Electrical Characteristics section of the official datasheet.
Does the W25Q256JVFIM have a dedicated hardware reset pin?
No, the W25Q256JVFIM does not include a dedicated hardware /RESET pin. It uses the 8-pad WSON 8×6-mm package (Code E), where Pin 7 functions as /HOLD only. Hardware reset is available only on SOIC-16 (Pin 3) and TFBGA (Ball A4) variants. For W25Q256JVFIM, system-level reset must be handled via software commands (66h + 99h) or power-cycle sequencing.
How do I enable Quad SPI mode on the W25Q256JVFIM?
To enable Quad SPI mode on the W25Q256JVFIM, the Quad Enable (QE) bit in Status Register-2 must be set to '1' using the Write Status Register-2 instruction (31h). Once set, the /WP and /HOLD pins become IO2 and IO3 respectively. The QE bit is non-volatile, so it persists across power cycles unless explicitly cleared. Confirm activation by reading Status Register-2 (35h) and verifying bit 1 = 1.
What package type is used by the W25Q256JVFIM?
The W25Q256JVFIM uses the 8-pad WSON 8×6-mm package (Package Code E), with exposed thermal pad. This compact, surface-mount package has no leaded pins and requires reflow-compatible PCB layout with solder mask defined pads and controlled thermal profile. It does not include a /RESET pin and relies solely on /HOLD (Pin 7) for transaction pausing.
Can the W25Q256JVFIM store more than 16 MB of data?
Yes, the W25Q256JVFIM stores 32 MB (256 M-bit) of data, exceeding the 16 MB limit of 3-byte addressing. To access addresses above 0xFFFFFF, the device must operate in 4-byte address mode, enabled via the Enter 4-Byte Address Mode instruction (B7h). Once enabled, all read/write/erase instructions use 32-bit addresses, and the Extended Address Register is bypassed.
W25Q256JVFIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 16-SOIC
W25Q256JVFIM FAQ
1.How can I place an order for W25Q256JVFIM through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JVFIM 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 W25Q256JVFIM reliable?
The price and inventory of W25Q256JVFIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JVFIM is usually 5 days.
3.What payment methods are accepted for W25Q256JVFIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JVFIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JVFIM?
W25Q256JVFIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JVFIM 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 W25Q256JVFIM?
For technical support, including W25Q256JVFIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JVFIM requirements.
6.How does Aetrix verify that W25Q256JVFIM is sourced from the original manufacturer or authorized distributors?
All W25Q256JVFIM 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 W25Q256JVFIM meets industry standards.
7.What is the process for return or replacement of W25Q256JVFIM?
All W25Q256JVFIM units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JVFIM, 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 W25Q256JVFIM part is unused and in its original packaging.
Return procedure for W25Q256JVFIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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