My Inquiry
My Account
Winbond Electronics Corporation W25Q256JVEJQ
- Part No.:
- W25Q256JVEJQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q256JVEJQ.pdf
- Description:
- IC FLASH 256MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,964
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
W25Q256JVEJQ from Winbond is a 256 M-bit (32 MB) serial NOR flash memory IC supporting standard, dual, and quad SPI interfaces with 133 MHz clock rate, 4 KB uniform sector erase granularity, and industrial temperature range (–40°C to +85°C). It features hardware write protection (/WP), hold (/HOLD), dedicated /RESET on SOIC/TFBGA packages, and supports execute-in-place (XIP) for code storage in embedded microcontrollers.
For engineers reviewing the W25Q256JVEJQ datasheet, W25Q256JVEJQ pinout, W25Q256JVEJQ application, or W25Q256JVEJQ equivalent, this device is selected for high-density, low-pin-count firmware storage requiring fast random read access, sector-level data integrity control, and JEDEC-compliant SFDP parameter discovery in space-constrained industrial systems.
Technical Context
The W25Q256JVEJQ implements a 131,072 × 256-byte page architecture with configurable 4 KB/32 KB/64 KB erase blocks and chip-erase capability. Its SPI interface supports Mode 0 and Mode 3 clock polarity, with Quad I/O enabled only after setting the non-volatile QE bit in Status Register-2 - repurposing /WP and /HOLD as IO2 and IO3.
It integrates volatile and non-volatile status register bits for block protection (BP3–BP0), top/bottom selection (TB), complement protection (CMP), and output driver strength (DRV1/DRV0), alongside three 256-byte one-time-programmable security registers and a 64-bit unique ID per device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 M-bit (32 MB) - supports full firmware images for mid-range MCUs without external memory expansion |
| SPI Clock Rate | Up to 133 MHz - enables 532 MB/s effective quad-I/O throughput for fast boot code loading |
| Erase Granularity | Uniform 4 KB sectors (8,192 total) - allows fine-grained field-updatable parameter storage alongside code |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic domains and tolerant of brown-out conditions |
| Data Retention | >20 years - ensures long-term reliability in unattended industrial deployments |
| Program-Erase Cycles | 100,000 per sector - sufficient for frequent OTA update partitions in edge devices |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and automation systems |
Pinout & Package
W25Q256JVEJQ uses the 8-pad WSON 8×6-mm package (Package Code E), with exposed thermal pad. Pin functions are electrically identical to WFLGA 6×5-mm (Code M) but differ mechanically in footprint and soldering profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; must transition high→low before instruction acceptance; controls DO high-impedance state |
| 2 DO (IO1) | Serial Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional IO1 in Dual/Quad SPI; requires QE=1 for Quad mode |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware lock for status register writes; becomes IO2 in Quad SPI when QE=1 |
| 4 GND | Ground Reference | Primary return path for VCC and I/O signals; connects to thermal pad for thermal dissipation |
| 5 DI (IO0) | Serial Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional IO0 in Dual/Quad SPI; used for all instruction/address entry |
| 6 CLK | Serial Clock Input | Edge-triggered timing reference for all SPI transfers; supports Mode 0 and Mode 3 polarity |
| 7 /HOLD (IO3) | Hold Input / Bidirectional I/O | Pauses active transfers while /CS remains low; becomes IO3 in Quad SPI when QE=1 |
| 8 VCC | Power Supply | 2.7–3.6 V supply; decoupling capacitor required within 5 mm of pin for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI with XIP support | Enables direct code execution from flash via Fast Read Quad I/O (EBh/ECh), eliminating RAM copy overhead |
| JEDEC SFDP Register | Provides standardized, host-readable configuration parameters (e.g., erase sizes, timing) without hard-coded assumptions |
| Volatile/non-volatile status bits | Allows runtime-locked sector protection (BPx, TB, CMP) and persistent security settings across power cycles |
| Erase/program suspend/resume | Permits interruption of long erase cycles to service time-critical interrupts, then resume without data loss |
| 64-bit unique ID | Enables device-specific firmware binding, secure provisioning, and anti-cloning in certified industrial systems |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Image |
|---|---|
|
Use Scenario: Storing bootloader and application firmware in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Primary non-volatile code storage with quad-SPI XIP support for deterministic boot latency. Use Value: 4 KB sector erase enables atomic firmware patching without disrupting operational code segments. |
Use Scenario: Holding certified boot images and calibration data in Class II medical instruments requiring traceable firmware versions. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with 64-bit unique ID and OTP security registers for regulatory audit trails. Use Value: Hardware write protection (/WP) and status register locking prevent unauthorized firmware modification during service. |
| Automotive ADAS Camera Module | Smart Energy Meter Firmware |
|
Use Scenario: Hosting image processing firmware and sensor calibration tables in automotive surround-view camera ECUs. IC Role / Device Role / Timing Role: High-speed quad-SPI interface delivers >66 MB/s continuous read for real-time frame buffer initialization. Use Value: 133 MHz clock rate and Fast Read Quad I/O reduce boot time below 100 ms for ASIL-B compliance. |
Use Scenario: Storing metrology firmware, tariff tables, and encrypted communication keys in utility-grade smart meters. IC Role / Device Role / Timing Role: Industrial-temp-rated flash with >20-year data retention for lifetime meter deployment. Use Value: Sector-lock capability isolates critical metrology code from updatable UI/application layers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L25645GMI-10G | 256 M-bit, 104 MHz max clock, no /RESET pin in SOIC8, lacks SFDP register | Requires software-managed reset sequence; no auto-discovery of timing/erase parameters | Select when legacy SPI controller compatibility is prioritized over XIP performance and parameter flexibility |
| S25FL256SAGMFI000 | 256 M-bit, 80 MHz clock, 1.8 V/3.0 V dual supply, includes HyperBus interface option | Higher pin count; supports both SPI and HyperBus; lower speed limits XIP responsiveness | Choose when future migration to parallel-like bandwidth is anticipated, or dual-voltage system integration is required |
Compared with MX25L25645GMI-10G and S25FL256SAGMFI000, W25Q256JVEJQ delivers superior random-read throughput via 133 MHz Quad I/O and built-in SFDP, enabling faster boot and simpler host driver development - critical for cost-sensitive industrial designs where pin count and firmware agility matter.
Availability
W25Q256JVEJQ is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive ADAS applications requiring stable component supply, long-life product support, and guaranteed industrial temperature grade performance.
Supply support for W25Q256JVEJQ 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 manufacturer specializing in specialty memory solutions, including serial flash, mobile DRAM, and code storage products for embedded and industrial markets.
The W25Q series was designed specifically for high-reliability, high-density code storage in resource-constrained microcontroller systems - emphasizing fast read performance, flexible erase architecture, and robust security features for firmware integrity.
FAQ
What is the package type and pin count of W25Q256JVEJQ?
W25Q256JVEJQ uses the 8-pad WSON 8×6-mm package (Package Code E), with pins arranged in a single-row exposed-pad layout. It has eight functional terminals: /CS, DO (IO1), /WP (IO2), GND, DI (IO0), CLK, /HOLD (IO3), and VCC. No NC or unused pins are present in this variant.
Does W25Q256JVEJQ support hardware reset, and how is it implemented?
W25Q256JVEJQ does not include a dedicated /RESET pin in the WSON 8×6-mm (E) package. Hardware reset is only available on SOIC-16 (Package Code F) and TFBGA (Codes B/C) variants. In W25Q256JVEJQ, reset must be performed via software command sequence (66h + 99h) or power-cycle initiation.
How is Quad SPI mode enabled on W25Q256JVEJQ?
Quad SPI mode on W25Q256JVEJQ is enabled by setting the Quad Enable (QE) bit in Status Register-2 (SR2) using instruction 31h. Once QE = 1, the /WP and /HOLD pins become IO2 and IO3 respectively. This change is non-volatile unless cleared, and requires Write Enable (06h) before SR2 modification.
What is the maximum continuous read speed of W25Q256JVEJQ in Quad I/O mode?
W25Q256JVEJQ achieves up to 66 MB/s continuous data transfer rate in Quad I/O mode using Fast Read Quad I/O (EBh) at 133 MHz clock frequency. This assumes optimal PCB layout, proper VCC decoupling, and host controller capable of sustaining quad-lane transfers without turnaround delays.
Can W25Q256JVEJQ be used for secure firmware storage with cryptographic key protection?
Yes - W25Q256JVEJQ includes three 256-byte Security Registers with One-Time-Programmable (OTP) lock bits (LB3–LB1), plus hardware write protection (/WP) and status register locking (SRP/SRL). These features allow secure storage of cryptographic keys, device certificates, or calibration secrets that cannot be overwritten after initial programming.
W25Q256JVEJQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (8x6)
W25Q256JVEJQ FAQ
1.How can I place an order for W25Q256JVEJQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q256JVEJQ 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 W25Q256JVEJQ reliable?
The price and inventory of W25Q256JVEJQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q256JVEJQ is usually 5 days.
3.What payment methods are accepted for W25Q256JVEJQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q256JVEJQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q256JVEJQ?
W25Q256JVEJQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q256JVEJQ 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 W25Q256JVEJQ?
For technical support, including W25Q256JVEJQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q256JVEJQ requirements.
6.How does Aetrix verify that W25Q256JVEJQ is sourced from the original manufacturer or authorized distributors?
All W25Q256JVEJQ 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 W25Q256JVEJQ meets industry standards.
7.What is the process for return or replacement of W25Q256JVEJQ?
All W25Q256JVEJQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q256JVEJQ, 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 W25Q256JVEJQ part is unused and in its original packaging.
Return procedure for W25Q256JVEJQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q256JVEJQ Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
