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Winbond Electronics Corporation W25Q256JVEIQ TR
- Part No.:
- W25Q256JVEIQ TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q256JVEIQ TR.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,471
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Product details
Overview
W25Q256JVEIQ TR 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 XIP execution in embedded microcontroller boot applications.
For engineers reviewing the W25Q256JVEIQ TR datasheet, W25Q256JVEIQ TR pinout, W25Q256JVEIQ TR application, or W25Q256JVEIQ TR equivalent, key selection criteria include 4-byte addressing support, Quad Enable (QE) bit configuration, /HOLD vs /RESET pin availability in WSON package, and JEDEC SFDP register compliance for automatic configuration.
Technical Context
The W25Q256JVEIQ TR implements a quad-peripheral interface with configurable I/O mapping: IO0–IO3 active in Quad SPI mode when Status Register-2 QE=1, repurposing /WP and /HOLD as IO2 and IO3. It supports both 3-byte and 4-byte address modes, with ADP bit controlling power-up default address mode and extended address register enabling full 256M-bit access in 3-byte mode.
Its functional architecture includes volatile/non-volatile status register bits (BP0–BP3, TB, CMP, SRP, QE, DRV0/DRV1), three 256-byte OTP-lockable security registers, 64-bit unique ID, and hardware /RESET only on SOIC/TFBGA - absent in WSON 8x6-mm (Package Code E), where /HOLD shares pin 7 with IO3 functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB), organized as 131,072 × 256-byte pages |
| Operating Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic systems without level shifting |
| Max Clock Frequency | 133 MHz for Standard/Dual/Quad SPI - enables 532 MB/s effective throughput in Quad I/O Fast Read mode |
| Erase Granularity | Uniform 4 KB sectors (8,192 total), 32 KB blocks (4,096), 64 KB blocks (2,048) - supports fine-grained firmware partitioning |
| Data Retention | 20+ years - validated for long-life industrial and automotive control storage |
| Endurance | 100,000 program/erase cycles per sector - suitable for frequent firmware update partitions |
| Interface Modes | Standard SPI (DI/DO), Dual SPI (IO0/IO1), Quad SPI (IO0–IO3) - selectable via instruction set and QE bit |
| Addressing | 3-byte + Extended Address Register or 4-byte native mode - required for full 256M-bit addressing |
Pinout & Package
W25Q256JVEIQ TR uses the 8-pad WSON 8×6-mm package (Package Code E), with no dedicated /RESET pin - /HOLD (Pin 7) serves dual function as IO3 in Quad SPI mode. All pins are surface-mount, lead-free, and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO during deselect; must transition high→low after power-up to accept new instructions |
| 2 DO (IO1) | Data Output / I/O1 | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad SPI; used for read data and status |
| 3 /WP (IO2) | Write Protect Input / I/O2 | Hardware write-protection enable; becomes IO2 in Quad SPI when QE=1; active-low protection of status register |
| 4 GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance PCB connection to minimize noise |
| 5 DI (IO0) | Data Input / I/O0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI; carries instructions, addresses, and write data |
| 6 CLK | Serial Clock Input | Edge-triggered timing reference; supports SPI Mode 0 and Mode 3; max 133 MHz frequency |
| 7 /HOLD (IO3) | Hold Input / I/O3 | Pauses ongoing operation when low; becomes IO3 in Quad SPI when QE=1; not available as /RESET in WSON |
| 8 VCC | Power Supply | 2.7–3.6 V supply; decoupling capacitor (0.1 µF) required near pin for stable core and I/O operation |
Key Features
| Feature | Design Value |
|---|---|
| Quad Enable (QE) Bit | Non-volatile bit in Status Register-2 that permanently enables IO2/IO3 functionality - required before Quad SPI commands execute |
| Erase/Program Suspend | Allows pausing erase or program operations to service higher-priority reads - critical for real-time firmware update scenarios |
| JEDEC SFDP Register | Standardized 256-byte parameter table readable via 5Ah command - enables automatic driver configuration without hard-coded timing values |
| 64-Bit Unique ID | Factory-programmed, read-only identifier (4Bh command) - supports secure device authentication and firmware binding |
| Security Registers | Three 256-byte OTP-lockable regions (42h/44h/48h) - used for keys, certificates, or calibration data requiring write-once protection |
| Output Driver Strength Control | Volatile/non-volatile DRV1/DRV0 bits adjust slew rate and drive strength - optimizes signal integrity across varying trace lengths and loads |
Applications
| Boot Code Storage | Firmware Update Partition |
|---|---|
Use Scenario: Storing primary bootloader and application code for ARM Cortex-M or RISC-V microcontrollers. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable Quad SPI interface enabling direct execution without RAM copy. Use Value: Reduces system BOM by eliminating external RAM for boot staging; leverages 133 MHz clock and 532 MB/s Quad I/O throughput for sub-100 ms boot times. | Use Scenario: Dedicated 4KB–64KB sector reserved for over-the-air (OTA) firmware updates in IoT edge nodes. IC Role / Device Role / Timing Role: Field-upgradable storage partition with hardware write-protection (/WP pin + BP bits) preventing accidental corruption during power loss. Use Value: Enables atomic update rollback using sector swap; 100K endurance ensures >10 years of daily updates at 30 cycles/year. |
| Configuration & Calibration Data | Secure Key Storage |
Use Scenario: Retaining device-specific calibration coefficients, sensor offsets, and network credentials across power cycles. IC Role / Device Role / Timing Role: Parameter storage with individual sector lock (36h/39h commands) and top/bottom protection (TB bit). Use Value: Prevents unauthorized overwrite via /WP pin + non-volatile BP bits; 4KB sector granularity allows independent locking of calibration vs. credential sectors. | Use Scenario: Storing cryptographic keys, TLS certificates, and secure boot hashes in tamper-resistant memory. IC Role / Device Role / Timing Role: Secure element adjunct using three 256-byte OTP-lockable security registers (LB1–LB3 bits). Use Value: Hardware-enforced write-once behavior prevents key extraction or modification post-programming; 64-bit unique ID binds keys to physical device. |
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-08G | 256 M-bit, 3.3 V, supports DTR Quad SPI and octal DTR mode; lacks 64-bit UID and SFDP v1.6 compliance | Higher bandwidth (up to 400 MHz DTR) but requires more complex controller support; no built-in unique ID for device binding | Select when maximum sequential read speed is critical and host supports DTR protocol; avoid if SFDP auto-configuration or secure device identity is required. |
| S25FL256SAGMFI000 | 256 M-bit, 3.0 V min, includes HyperBus interface option; supports 4-byte addressing natively but no /HOLD pin in 8-pin SOIC variant | HyperBus enables 333 MHz DDR transfers; however, pinout differs significantly - no /HOLD or /WP in basic SOIC version | Choose for high-speed parallel-like performance with compatible HyperFlash controllers; not drop-in for SPI-only designs relying on /HOLD functionality. |
Compared with MX25L25645GMI-08G and S25FL256SAGMFI000, the W25Q256JVEIQ TR provides balanced SPI compatibility, robust security features (SFDP, UID, OTP registers), and consistent /HOLD functionality across all packages - making it optimal for cost-sensitive, firmware-centric embedded designs requiring field-upgrade safety and vendor-agnostic driver support.
Availability
W25Q256JVEIQ TR is available at Aetrix Electronics and suitable for industrial control panels, medical diagnostic boot loaders, and automotive infotainment head units requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for W25Q256JVEIQ TR 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, automotive, and consumer markets since 1987.
The W25Q series targets embedded systems requiring reliable, high-speed serial flash with advanced security and flexible erase architecture - specifically designed for code execution, firmware storage, and secure parameter retention in resource-constrained environments.
FAQ
What is the package type and pin count of the W25Q256JVEIQ TR?
The W25Q256JVEIQ TR uses an 8-pad WSON 8×6-mm package (Package Code E) with no dedicated /RESET pin. Pin 7 functions as /HOLD in Standard/Dual SPI mode and as IO3 in Quad SPI mode when the QE bit is set. This compact footprint supports high-density PCB layouts while maintaining full SPI compatibility.
Does the W25Q256JVEIQ TR support 4-byte addressing, and how is it enabled?
Yes, the W25Q256JVEIQ TR supports native 4-byte addressing via the B7h (Enter 4-Byte Address Mode) instruction. The ADP bit in Status Register-3 determines power-up default mode: ADP=1 selects 4-byte mode automatically. For 3-byte mode operation beyond 128 M-bit, the extended address register (C5h/C8h) must be used alongside standard 3-byte addresses.
How does the Quad Enable (QE) bit affect pin functionality on the W25Q256JVEIQ TR?
The QE bit (bit 1 of Status Register-2) must be set to 1 to activate Quad SPI mode. When QE=1, the /WP pin (Pin 3) becomes IO2 and the /HOLD pin (Pin 7) 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 appropriate protection bits cleared.
What security features does the W25Q256JVEIQ TR provide for firmware protection?
The W25Q256JVEIQ TR offers multiple firmware protection layers: hardware /WP pin + non-volatile BP/TB/CMP bits for sector-level write lock; Erase/Program Suspend for safe interrupt handling during updates; three 256-byte OTP security registers (LB1–LB3) for keys; and a factory-programmed 64-bit unique ID (4Bh) for device binding. These features collectively prevent unauthorized modification, cloning, or replay attacks.
Is the W25Q256JVEIQ TR compatible with standard SPI controllers, and what modes does it support?
Yes, the W25Q256JVEIQ TR is fully backward-compatible with standard SPI controllers using CLK, /CS, DI, and DO pins (Mode 0 or Mode 3). It also supports enhanced modes: Dual SPI (IO0/IO1) and Quad SPI (IO0–IO3) for higher throughput. All modes use the same instruction set - only the data transfer width and pin usage differ based on QE bit state and selected instruction (e.g., 0Bh vs 6Bh vs EBh).
W25Q256JVEIQ TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- 8-WSON (8x6)
W25Q256JVEIQ TR FAQ
1.How can I place an order for W25Q256JVEIQ TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JVEIQ TR 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 W25Q256JVEIQ TR reliable?
The price and inventory of W25Q256JVEIQ TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JVEIQ TR is usually 5 days.
3.What payment methods are accepted for W25Q256JVEIQ TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JVEIQ TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JVEIQ TR?
W25Q256JVEIQ TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JVEIQ TR 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 W25Q256JVEIQ TR?
For technical support, including W25Q256JVEIQ TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JVEIQ TR requirements.
6.How does Aetrix verify that W25Q256JVEIQ TR is sourced from the original manufacturer or authorized distributors?
All W25Q256JVEIQ TR 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 W25Q256JVEIQ TR meets industry standards.
7.What is the process for return or replacement of W25Q256JVEIQ TR?
All W25Q256JVEIQ TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JVEIQ TR, 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 W25Q256JVEIQ TR part is unused and in its original packaging.
Return procedure for W25Q256JVEIQ TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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