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Winbond Electronics Corporation W25Q256JVCIQ
- Part No.:
- W25Q256JVCIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 24-TBGA
- Datasheet:
-
W25Q256JVCIQ.pdf
- Description:
- IC FLASH 256MBIT SPI 24TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,468
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Product details
Overview
W25Q256JVCIQ 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 to 3.6V, features hardware /WP and /HOLD pins, and supports execute-in-place (XIP) for embedded code storage in microcontroller boot applications.
For engineers reviewing the W25Q256JVCIQ datasheet, W25Q256JVCIQ pinout, W25Q256JVCIQ application, or W25Q256JVCIQ equivalent, key selection criteria include 4-byte addressing support, Quad Enable (QE) bit configuration, sector/block erase flexibility, JEDEC ID/SFDP register compliance, and package-specific /RESET availability in SOIC/TFBGA variants.
Technical Context
The W25Q256JVCIQ implements a SPI-compatible serial interface with configurable 3- or 4-byte addressing modes, where 4-byte mode is enabled via B7h instruction and stored in non-volatile ADP bit. Its architecture supports simultaneous read/write suspend/resume, volatile/non-volatile status register bits (BP0–BP3, TB, CMP, QE), and three 256-byte one-time-programmable security registers.
Quad SPI operation requires the non-volatile QE bit in Status Register-2 to be set, repurposing /WP and /HOLD as IO2 and IO3; standard/dual SPI retains dedicated /WP and /HOLD functions. The device uses Mode 0 or Mode 3 SPI timing, with CLK idle low (Mode 0) or high (Mode 3), and supports software reset (66h+99h) and hardware /RESET on SOIC/TFBGA packages only.
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 with 3- or 4-byte addressing; QE bit enables quad I/O mode |
| Max Clock Frequency | 133 MHz (standard/dual/quad); 532 MHz equivalent quad I/O throughput |
| Erase Granularity | Uniform 4 KB sectors (8,192 total), 32 KB blocks (4,096), 64 KB blocks (2,048), full chip |
| Data Retention & Endurance | 20+ years retention; 100,000 program/erase cycles per sector |
| Supply Voltage | 2.7 V to 3.6 V; <1 µA typical power-down current |
| Operating Temperature | –40°C to +85°C industrial grade range |
Pinout & Package
W25Q256JVCIQ 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 input or /RESET only in SOIC/TFBGA variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable; high-impedance DO/IOs when deasserted; required high-to-low transition after power-up before instruction acceptance |
| DO / IO1 (Pin 2) | Serial Data Output / Bidirectional I/O | Unidirectional output in standard SPI; bidirectional IO1 in dual/quad SPI; used for Fast Read Dual/Quad Output instructions |
| /WP / IO2 (Pin 3) | Write Protect Input / Bidirectional I/O | Hardware write protection for status register when active low; becomes IO2 in quad SPI mode when QE=1 |
| GND (Pin 4) | Ground Reference | Primary return path for all internal circuitry and I/O signaling |
| DI / IO0 (Pin 5) | Serial Data Input / Bidirectional I/O | Unidirectional input in standard SPI; bidirectional IO0 in dual/quad SPI; carries instructions, addresses, and data on CLK rising edge |
| CLK (Pin 6) | Serial Clock Input | Timing reference for all SPI operations; supports Mode 0 (CLK idle low) and Mode 3 (CLK idle high) |
| /HOLD / IO3 (Pin 7) | Hold Input / Bidirectional I/O | Pauses ongoing SPI transfer when asserted low; becomes IO3 in quad SPI mode when QE=1; not available as /HOLD in quad mode |
| VCC (Pin 8) | Power Supply | Single 2.7–3.6 V supply; powers core logic, memory array, and I/O buffers |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Enables true XIP execution with 532 MHz effective bandwidth, eliminating need for parallel flash in space-constrained MCU boot designs |
| Erase/Program Suspend & Resume | Allows background read access during long erase/program operations-critical for real-time firmware updates without system stall |
| JEDEC SFDP Register | Provides standardized, discoverable parameter table (e.g., erase times, address modes) enabling automatic driver configuration across host platforms |
| 64-bit Unique Serial Number | Factory-programmed per-device ID used for secure firmware binding, anti-cloning, and field asset tracking without external EEPROM |
| Three 256-byte Security Registers | OTP-lockable storage for cryptographic keys, calibration data, or license tokens-prevents unauthorized readback or overwrite after programming |
Applications
| Industrial HMI Boot Storage | Automotive Infotainment Firmware |
|---|---|
|
Use Scenario: Storing boot loader and GUI assets for ARM Cortex-A series HMIs in factory automation panels. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP-capable quad SPI interface enabling direct execution of UI logic without RAM copy. Use Value: Reduces BOM cost and PCB area vs. parallel NOR; 4KB sector granularity allows safe over-the-air (OTA) partial updates without erasing entire application image. |
Use Scenario: Holding firmware images and audio assets for head unit systems requiring AEC-Q100-compliant components. IC Role / Device Role / Timing Role: High-reliability firmware repository interfaced to SoC via quad SPI with hardware write protection against accidental corruption during vehicle power cycling. Use Value: 100K endurance cycles and 20-year data retention meet automotive lifecycle requirements; /WP pin provides fail-safe lock during ignition-on transitions. |
| Medical Device Configuration Memory | IoT Edge Gateway Firmware |
|
Use Scenario: Storing calibrated sensor coefficients and regulatory-compliant device settings in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure parameter storage using OTP-locked security registers and individual sector lock (36h/39h) for tamper-resistant configuration management. Use Value: Prevents unauthorized modification of FDA-cleared calibration data; SFDP register ensures consistent driver behavior across firmware revisions. |
Use Scenario: Hosting Linux kernel, rootfs, and OTA update staging area in cellular-connected gateways deployed in remote infrastructure. IC Role / Device Role / Timing Role: High-throughput code and data storage with 4-byte addressing support for >16MB images and background suspend/resume during network-driven updates. Use Value: 66MB/s continuous read eliminates boot bottlenecks; 4-byte mode avoids address wrap issues in large-image 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 | 256Mb density, 104MHz max clock, no 4-byte addressing; supports only 3-byte mode with extended address register | Lacks native 4-byte addressing and QE bit; requires additional software overhead for >16MB access | Select when legacy 3-byte-only systems require drop-in replacement without firmware changes to address mode handling |
| S25FL256SAGMFI000 | 256Mb density, 133MHz clock, supports 4-byte mode and QSPI, but uses different status register layout and SFDP structure | Requires revalidation of driver initialization sequence due to non-identical status register bit mapping (e.g., QE location) | Choose when Cypress-compatible toolchains and validated drivers are already in use; verify SFDP parsing and security register access compatibility |
Compared with W25Q256JVCIQ, MX25L25645GMI-10G lacks native 4-byte addressing and offers lower throughput, while S25FL256SAGMFI000 matches speed and capacity but demands driver-level adaptation for register semantics and security features.
Availability
W25Q256JVCIQ is available at Aetrix Electronics and suitable for industrial HMI boot storage, automotive infotainment firmware, and medical device configuration memory requiring stable component supply across multi-year production cycles.
Supply support for W25Q256JVCIQ 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 for embedded, communications, and consumer markets.
The W25Q series is designed specifically for high-performance, space-constrained embedded systems requiring reliable code storage, XIP capability, and robust security features - targeting MCU boot, firmware update, and parameter retention applications.
FAQ
What is the package type and pin count of W25Q256JVCIQ?
W25Q256JVCIQ uses an 8-pad WSON 8×6-mm package (Package Code E) with no dedicated /RESET pin. Pin functions include /CS, DO/IO1, /WP/IO2, GND, DI/IO0, CLK, /HOLD/IO3, and VCC. Unlike SOIC or TFBGA variants, this WSON variant does not provide hardware /RESET functionality - /HOLD remains active as a hold control only.
Does W25Q256JVCIQ support 4-byte addressing, and how is it enabled?
Yes, W25Q256JVCIQ supports 4-byte addressing mode via the B7h instruction, which sets the ADP bit in the non-volatile configuration register. Once enabled, all subsequent read/write/erase commands use 4-byte addresses. The mode persists after power cycle unless explicitly disabled with E9h. This is essential for accessing the full 32MB capacity without address wrap limitations.
How does the Quad Enable (QE) bit affect pin functionality in W25Q256JVCIQ?
The QE bit (bit 1 of Status Register-2) must be set to 1 to enable quad SPI mode in W25Q256JVCIQ. When QE=1, the /WP pin becomes IO2 and the /HOLD pin becomes IO3. In this configuration, /WP and /HOLD lose their hardware protection and hold functions. QE is non-volatile, so the setting persists across power cycles unless rewritten.
What security features are implemented in W25Q256JVCIQ?
W25Q256JVCIQ includes hardware write protection (/WP pin), top/bottom/complement sector locking, individual block/sector lock (36h/39h), global lock (7Eh/98h), three 256-byte OTP-locked security registers, and a factory-programmed 64-bit unique ID. These features enable secure firmware signing, calibration data protection, and anti-counterfeiting without external security ICs.
Can W25Q256JVCIQ be used for execute-in-place (XIP) applications?
Yes, W25Q256JVCIQ supports true XIP operation via fast read quad I/O (EBh/ECh) instructions, delivering up to 532 MHz effective bandwidth. Its uniform 4KB sectors, low latency random access, and suspend/resume capability allow deterministic code execution directly from flash - widely adopted in Cortex-M and RISC-V MCU boot loaders and GUI frameworks.
W25Q256JVCIQ 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)
W25Q256JVCIQ FAQ
1.How can I place an order for W25Q256JVCIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JVCIQ 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 W25Q256JVCIQ reliable?
The price and inventory of W25Q256JVCIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JVCIQ is usually 5 days.
3.What payment methods are accepted for W25Q256JVCIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JVCIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JVCIQ?
W25Q256JVCIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JVCIQ 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 W25Q256JVCIQ?
For technical support, including W25Q256JVCIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JVCIQ requirements.
6.How does Aetrix verify that W25Q256JVCIQ is sourced from the original manufacturer or authorized distributors?
All W25Q256JVCIQ 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 W25Q256JVCIQ meets industry standards.
7.What is the process for return or replacement of W25Q256JVCIQ?
All W25Q256JVCIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JVCIQ, 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 W25Q256JVCIQ part is unused and in its original packaging.
Return procedure for W25Q256JVCIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q256JVCIQ Tags
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M24C02-WMN6TP
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