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Winbond Electronics Corporation W25Q257JVEIQ
- Part No.:
- W25Q257JVEIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q257JVEIQ.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,366
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Product details
Overview
W25Q257JVEIQ from Winbond is a 256 M-bit (32 MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 4KB uniform sectors, 133 MHz max clock, and 66 MB/s continuous read throughput. It operates from 2.7V–3.6V, retains data >20 years, and supports XIP execution in embedded microcontroller boot systems.
For engineers reviewing the W25Q257JVEIQ datasheet, W25Q257JVEIQ pinout, W25Q257JVEIQ application, or W25Q257JVEIQ equivalent, this page delivers verified package mapping (WSON 8x6-mm), confirmed Quad Enable (QE) bit behavior, JEDEC ID and SFDP register compliance, and real-world sector protection granularity for firmware storage and secure boot partitioning.
Technical Context
The W25Q257JVEIQ implements a hierarchical erase architecture with 8,192 × 4KB sectors, 512 × 64KB blocks, and chip-erase capability. Its status register includes non-volatile ADP (address mode default), QE (quad enable), and BP/TB/CMP bits enabling hardware write protection down to individual 4KB sectors.
It supports dual/quad I/O modes only when QE=1 in Status Register-2, repurposing /WP as IO2 and /HOLD as IO3. The device defaults to 4-byte addressing (ADP=1) and provides dedicated hardware reset on SOIC packages - though W25Q257JVEIQ uses WSON-8, where /HOLD doubles as /RESET and no separate /RESET pin exists.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB) - supports full firmware images for mid-tier MCUs without external memory expansion |
| Interface Modes | Standard/Dual/Quad SPI - enables scalable bandwidth: up to 532 MHz effective rate in Quad I/O Fast Read mode |
| Max Clock Frequency | 133 MHz - allows 66 MB/s sustained read throughput, exceeding legacy parallel flash in compact designs |
| Erase Granularity | 4 KB sectors - permits fine-grained firmware update partitioning and parameter storage without disturbing code regions |
| Write Endurance | 100,000 program/erase cycles per sector - ensures reliability for field-upgradable firmware over product lifetime |
| Data Retention | 20+ years - validated at +85°C, suitable for industrial and automotive control modules requiring long-term data integrity |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic domains and low-power MCU subsystems |
| Operating Temp | −40°C to +85°C - qualified for extended temperature operation in uncontrolled environments |
Pinout & Package
W25Q257JVEIQ is packaged in an 8-pad WSON 8×6 mm (Package Code E) with exposed thermal pad. Pin functions are defined per JEDEC MO-252, and all pins support 3.3 V I/O tolerance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable signal; high-impedance DO/IO outputs when deasserted; required to transition high→low before new instruction acceptance |
| DO (IO1) | Serial Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional IO1 in Dual/Quad modes; used for Fast Read Dual/Quad Output instructions |
| /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware write-protection enable when low; becomes IO2 in Quad mode only after QE bit is set in Status Register-2 |
| GND | Ground Reference | Primary return path for VCC and I/O signals; must be low-inductance connection for stable high-speed SPI timing |
| DI (IO0) | Serial Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional IO0 in Dual/Quad modes; carries instructions, addresses, and data on CLK rising edge |
| CLK | Serial Clock Input | Master-generated timing reference; supports Mode 0 and Mode 3; rising edge clocks input, falling edge clocks output |
| /HOLD or /RESET (IO3) | Hold Control / Reset Input / Bidirectional I/O | Pauses ongoing SPI transfer when low (/HOLD); resets device to power-on state when pulsed low (~1 µs); becomes IO3 in Quad mode when QE=1 |
| VCC | Power Supply | 2.7–3.6 V supply; decoupling capacitor (≥1 µF) required within 10 mm of pin for noise immunity during fast reads/writes |
Key Features
| Feature | Design Value |
|---|---|
| Quad Enable (QE) Bit | Non-volatile bit in Status Register-2 that unlocks IO2 (/WP) and IO3 (/HOLD) for Quad SPI operation - essential for achieving 532 MHz effective bandwidth |
| 4-Byte Address Mode Default | Factory-set ADP=1 ensures immediate access to full 256 M-bit address space without software initialization - eliminates boot-time address mode switching overhead |
| Erase/Program Suspend | Allows pausing active erase or program operations to service time-critical interrupts - critical for real-time firmware update handlers |
| 64-Bit Unique ID | Factory-programmed read-only serial number accessible via 4Bh instruction - enables secure device binding and anti-cloning in certified applications |
| Security Registers | Three 256-byte OTP-lockable registers for storing cryptographic keys or calibration data - protected by LB1–LB3 bits with one-time programmable lock |
| SFDP Register | JEDEC-standard Serial Flash Discoverable Parameters table at 5Ah - enables automatic driver configuration without hard-coded timing parameters |
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. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable Quad SPI interface enabling direct execution from flash without RAM copy. Use Value: Reduces BOM cost and PCB area by eliminating external parallel NOR/NAND; 133 MHz clock supports <100 ns instruction fetch latency. | Use Scenario: Secure storage of encrypted OTA firmware images in connected IoT gateways and smart meters. IC Role / Device Role / Timing Role: Tamper-resistant storage partition with sector-level write protection and unique ID binding to cloud authentication. Use Value: Enables atomic firmware updates using 4KB sector erase; security registers store decryption keys locked via OTP bits LB1–LB3. |
| Industrial HMI Configuration | Automotive Diagnostic Module |
Use Scenario: Persistent storage of display layouts, language packs, and user calibration settings in factory HMIs. IC Role / Device Role / Timing Role: Parameter storage with hardware write protection (BP/TB bits) preventing accidental corruption during runtime. Use Value: 8,192 independent 4KB sectors allow isolated updates of UI assets without affecting core logic; >20-year retention ensures field longevity. | Use Scenario: Storing UDS diagnostic routines, DTC definitions, and vehicle-specific calibration maps in Tier-1 ECUs. IC Role / Device Role / Timing Role: AEC-Q100-qualified (via W25Q257JV family) non-volatile memory for ASAM-compliant diagnostic firmware. Use Value: −40°C to +85°C operation meets automotive ambient requirements; SFDP register simplifies driver porting across ECU platforms. |
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 |
|---|---|---|---|
| MX25L25745GMID | 256 M-bit, 3.3 V, supports Dual/Quad SPI but lacks 4-byte address mode default (ADP=0); no integrated SFDP register. | Requires explicit B7h command to enter 4-byte mode; no auto-discoverable timing parameters - driver must embed fixed AC specs. | Select when legacy SPI controller lacks 4-byte mode awareness and system firmware can manage address mode manually. |
| S25FL256SAGMFI000 | 256 M-bit, 3.0 V min supply, includes configurable drive strength (DRV0/DRV1) and enhanced ECC; supports octal DTR mode beyond Quad SPI. | Higher pin count (16-pin SOIC/WSON), requires additional configuration for drive strength tuning; ECC adds latency for error correction. | Select when system demands higher reliability (ECC), wider voltage margin, or future-proofing for octal interface migration. |
Compared with MX25L25745GMID and S25FL256SAGMFI000, the W25Q257JVEIQ offers factory-default 4-byte addressing and JEDEC SFDP compliance - reducing boot-time initialization complexity and enabling plug-and-play driver integration in modern RTOS and Linux-based bootloaders.
Availability
W25Q257JVEIQ is available at Aetrix Electronics and suitable for industrial HMI, automotive diagnostic modules, and secure IoT firmware storage requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for W25Q257JVEIQ 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 TrustME secure memory products.
The W25Q257JV family targets high-performance embedded systems requiring fast, reliable, and secure code and data storage - optimized for MCU boot, OTA updates, and industrial firmware resilience.
FAQ
What is the default address mode for W25Q257JVEIQ at power-up?
The W25Q257JVEIQ defaults to 4-byte address mode at power-up, controlled by the non-volatile ADP bit (S17) in Status Register-2, which is factory-set to 1. This allows immediate access to the full 256 M-bit address space without issuing an Enter 4-Byte Mode (B7h) command, simplifying boot firmware design and reducing initialization latency in time-critical applications.
Does W25Q257JVEIQ support hardware reset via a dedicated /RESET pin?
No, W25Q257JVEIQ does not include a dedicated /RESET pin. It uses the WSON 8x6-mm package (Package Code E), where Pin 7 functions as /HOLD or /RESET - meaning it serves as /HOLD in Standard/Dual SPI modes and becomes IO3 in Quad SPI mode when QE=1. Hardware reset is only available on SOIC-16 and TFBGA variants of the W25Q257JV family.
How is Quad SPI functionality enabled on W25Q257JVEIQ?
Quad SPI is enabled on W25Q257JVEIQ by setting the Quad Enable (QE) bit in Status Register-2 (bit S1) to 1 using the Write Status Register-2 (31h) instruction. Once QE=1, the /WP pin becomes IO2 and the /HOLD pin becomes IO3, allowing four I/O lines (IO0–IO3) for high-speed data transfer. The device must be in 4-byte address mode or use Extended Address Register for full memory access in Quad mode.
What is the purpose of the 64-bit Unique ID in W25Q257JVEIQ?
The 64-bit Unique ID in W25Q257JVEIQ is a factory-programmed, read-only serial number accessible via the Read Unique ID Number (4Bh) instruction. It enables device-specific binding in secure boot chains, cryptographic key derivation, and anti-counterfeiting measures - ensuring each W25Q257JVEIQ instance can be uniquely authenticated in trusted execution environments.
Can W25Q257JVEIQ be used for secure key storage?
Yes, W25Q257JVEIQ supports secure key storage via three 256-byte Security Registers (SR1–SR3), each protected by one-time-programmable (OTP) lock bits LB1–LB3. Once locked, these registers become read-only and immune to overwrite - making them suitable for storing cryptographic keys, calibration secrets, or license tokens in tamper-resistant applications.
W25Q257JVEIQ 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:
- 3ms
- Access Time:
- 6 ns
- 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)
W25Q257JVEIQ FAQ
1.How can I place an order for W25Q257JVEIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q257JVEIQ 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 W25Q257JVEIQ reliable?
The price and inventory of W25Q257JVEIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q257JVEIQ is usually 5 days.
3.What payment methods are accepted for W25Q257JVEIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q257JVEIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q257JVEIQ?
W25Q257JVEIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q257JVEIQ 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 W25Q257JVEIQ?
For technical support, including W25Q257JVEIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q257JVEIQ requirements.
6.How does Aetrix verify that W25Q257JVEIQ is sourced from the original manufacturer or authorized distributors?
All W25Q257JVEIQ 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 W25Q257JVEIQ meets industry standards.
7.What is the process for return or replacement of W25Q257JVEIQ?
All W25Q257JVEIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q257JVEIQ, 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 W25Q257JVEIQ part is unused and in its original packaging.
Return procedure for W25Q257JVEIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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