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Winbond Electronics Corporation W25Q16DVSSIQ
- Part No.:
- W25Q16DVSSIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q16DVSSIQ.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,959
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Product details
Overview
W25Q16DVSSIQ from Winbond is a 16 M-bit (2 MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 104 MHz clock capability, 4 KB uniform sector architecture, and XIP-capable continuous read mode - deployed for code storage and execution in microcontroller boot loaders, IoT firmware images, and embedded UI assets.
For engineers reviewing the W25Q16DVSSIQ datasheet, W25Q16DVSSIQ pinout, W25Q16DVSSIQ application, or W25Q16DVSSIQ equivalent, this page delivers verified package mapping (8-pin SOIC 208-mil), confirmed Quad SPI timing (416 MHz equivalent), JEDEC ID validation (EF4015), SFDP register support, and hardware write protection via /WP and /HOLD pins - all critical for secure, high-speed firmware storage design.
Technical Context
The W25Q16DVSSIQ implements a SPI-compatible command set with three operational modes: Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3), where Quad mode requires non-volatile QE bit (SR-2, bit 1) to be set. Its internal architecture includes a 256-byte page buffer, 512 × 4 KB erasable sectors, and 32 × 64 KB erasable blocks, enabling flexible firmware partitioning.
It integrates dual status registers (SR-1 and SR-2), programmable block protection (BP2–BP0, TB, SEC), volatile/non-volatile lock bits (SRP0/SRP1), and 64-bit unique ID. Power management supports 4 mA active current and <1 µA power-down, with full operation across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8,192 × 256-byte pages |
| SPI Clock Max | 104 MHz - enables 208 MHz (Dual I/O) or 416 MHz (Quad I/O) effective throughput |
| Erase Granularity | Uniform 4 KB sectors (512 total), 32 KB blocks (64 total), 64 KB blocks (32 total), full chip |
| Write Endurance | 100,000 program/erase cycles per sector - supports frequent OTA firmware updates |
| Data Retention | 20 years at +25°C - ensures long-term reliability in unpowered storage |
| Operating Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic systems without level shifting |
| JEDEC ID | EF4015 - enables automatic device detection and configuration in bootloader software |
| SFDP Support | Yes (Read SFDP Register 5Ah) - provides standardized, vendor-agnostic parameter discovery |
Pinout & Package
W25Q16DVSSIQ is packaged in an 8-pin SOIC 208-mil (package code SS), with gull-wing leads, 1.27 mm pitch, and RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; places DO in high-impedance state when deasserted; required to transition H→L before instruction acceptance |
| 2 DO (IO1) | Serial Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; becomes IO1 in Dual/Quad modes; used for Fast Read instructions |
| 3 /WP (IO2) | Hardware Write Protect / Bidirectional I/O | Active-low hardware lock for status register; repurposed as IO2 in Quad mode when QE=1 |
| 4 GND | Ground Reference | Primary return path for VCC and all I/O signals; must be low-impedance for stable SPI timing |
| 5 DI (IO0) | Serial Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; becomes IO0 in Dual/Quad modes; carries instructions, addresses, and data |
| 6 CLK | Serial Clock Input | Edge-triggered timing source; supports SPI Modes 0 and 3; max 104 MHz frequency determines interface bandwidth |
| 7 /HOLD (IO3) | Hold Input / Bidirectional I/O | Pauses ongoing SPI transfer while /CS remains low; repurposed as IO3 in Quad mode when QE=1 |
| 8 VCC | Power Supply | 2.7–3.6 V supply; decoupling capacitor (0.1 µF) required near pin for noise immunity during erase/program |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI XIP Support | Enables true execute-in-place from flash using Fast Read Quad I/O (EBh), reducing RAM footprint in resource-constrained MCUs |
| Hardware Write Protection | /WP pin + BP/TB/SEC bits allow selective 4 KB sector lockdown - prevents accidental firmware corruption during field updates |
| Erase/Program Suspend | 75h/7Ah commands pause/resume background operations - allows time-critical interrupt service without data loss |
| 64-bit Unique ID | Factory-programmed serial number accessible via 4Bh instruction - supports device authentication and secure provisioning |
| Security Registers | Three 256-byte OTP-locked security registers (LB1–LB3) - store cryptographic keys or calibration data with permanent write-disable |
| Continuous Read Mode | Wrap-length configurable (8/16/32/64 bytes); only 8 clocks needed to address - eliminates instruction overhead for streaming reads |
Applications
| Industrial PLC Firmware Storage | Smart Home Hub Boot Code |
|---|---|
|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP capability, interfaced to ARM Cortex-M7 MCU via Quad SPI at 80 MHz. Use Value: 4 KB sector granularity enables atomic firmware patching; 20-year retention ensures decade-long field deployment without refresh. |
Use Scenario: Hosting boot loader and application binaries for Wi-Fi/BLE-enabled home automation hubs requiring fast cold-start performance. IC Role / Device Role / Timing Role: Boot-time flash memory accessed by ESP32-S3 via Dual SPI Fast Read (3Bh) for sub-200 ms application launch. Use Value: 52 MB/s continuous read rate reduces boot latency; hardware /WP protection prevents OTA update corruption during brown-out events. |
| Medical Diagnostic Device UI Assets | Automotive ADAS Camera Module |
|
Use Scenario: Storing compressed GUI bitmaps, fonts, and localization strings in portable ultrasound devices with strict EMC requirements. IC Role / Device Role / Timing Role: Secondary flash memory mapped to MCU's external memory bus via Quad I/O, isolated from main application flash. Use Value: Low 4 mA active current extends battery life; SFDP register allows runtime configuration of read latency and dummy cycles. |
Use Scenario: Holding camera sensor calibration data and firmware patches in rear-view camera modules subject to AEC-Q100 Grade 2 temperature stress. IC Role / Device Role / Timing Role: Parameter storage IC interfaced to NXP S32K144 via Standard SPI with /HOLD used for CAN interrupt synchronization. Use Value: –40°C to +85°C rating meets automotive cabin thermal specs; 100K-cycle endurance supports lifetime recalibration cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L1606EM2I-12G | Same density (16 M-bit), 3.3 V, SOIC 208-mil, but lacks Quad SPI and SFDP; max SPI clock 80 MHz | No XIP support; unsuitable for high-speed boot or streaming media; limited to legacy SPI-only designs | Select only if Quad SPI and SFDP are unused and cost sensitivity outweighs future upgrade path |
| S25FL116K0XMFI041 | 16 M-bit, 3.0 V min, SOIC 208-mil, supports Quad SPI and SFDP, but uses different QE mechanism (volatile bit) and lacks /HOLD pin | Requires software-managed hold behavior; no hardware pause capability for interrupt coexistence | Prefer when system-level hold control is handled in firmware and JEDEC ID compatibility is secondary |
Compared with MX25L1606EM2I-12G and S25FL116K0XMFI041, the W25Q16DVSSIQ uniquely combines hardware /HOLD, non-volatile QE, 64-bit UID, and full SFDP compliance - making it the only option among the three that supports robust, standards-based, interrupt-safe XIP in industrial and automotive contexts.
Availability
W25Q16DVSSIQ is available at Aetrix Electronics and suitable for industrial control firmware storage, smart edge device boot code, and automotive infotainment parameter retention requiring stable component supply and long-lifecycle assurance.
Supply support for W25Q16DVSSIQ 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 serial flash, PSRAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.
The W25Q series was designed specifically for high-reliability embedded systems needing fast, secure, and pin-efficient code and data storage - emphasizing Quad SPI performance, hardware protection, and long-term data integrity.
FAQ
What is the package type and lead count for W25Q16DVSSIQ?
W25Q16DVSSIQ uses an 8-pin SOIC 208-mil package (package code SS), with gull-wing leads, 1.27 mm pitch, and RoHS-compliant matte tin plating. This matches the mechanical and thermal specifications defined in Winbond's datasheet section 9.2 and is distinct from the 150-mil (SN) or TFBGA variants.
Does W25Q16DVSSIQ support Quad SPI mode out of the box?
No - W25Q16DVSSIQ requires the Quad Enable (QE) bit in Status Register-2 to be set (via Write Status Register instruction 01h) to activate Quad SPI functionality. Until QE=1, /WP and /HOLD remain dedicated hardware protection pins; after setting QE, they become IO2 and IO3 respectively.
How is hardware write protection implemented on W25Q16DVSSIQ?
W25Q16DVSSIQ implements dual-layer hardware write protection: the /WP pin (pin 3) disables status register writes when asserted low, and Block Protect (BP2–BP0), Top/Bottom (TB), and Sector Protect (SEC) bits in Status Register-1 define which 4 KB sectors are locked. Both mechanisms must be configured to achieve full protection.
Can W25Q16DVSSIQ be used for execute-in-place (XIP) operation?
Yes - W25Q16DVSSIQ supports true XIP via its Continuous Read Mode and Fast Read Quad I/O (EBh) instruction. With QE enabled and proper dummy cycle configuration, it delivers up to 416 MHz effective throughput, allowing ARM and RISC-V cores to execute code directly from flash without copying to RAM.
What is the purpose of the /HOLD pin on W25Q16DVSSIQ?
The /HOLD pin (pin 7) allows W25Q16DVSSIQ to pause an ongoing SPI transaction while remaining selected (/CS low). When pulled low, DO goes high-Z and DI/CLK are ignored - enabling safe sharing of the SPI bus with other peripherals or handling of time-critical interrupts without aborting flash operations.
W25Q16DVSSIQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 50µs, 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-SOIC
W25Q16DVSSIQ FAQ
1.How can I place an order for W25Q16DVSSIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16DVSSIQ 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 W25Q16DVSSIQ reliable?
The price and inventory of W25Q16DVSSIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16DVSSIQ is usually 5 days.
3.What payment methods are accepted for W25Q16DVSSIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16DVSSIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16DVSSIQ?
W25Q16DVSSIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16DVSSIQ 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 W25Q16DVSSIQ?
For technical support, including W25Q16DVSSIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16DVSSIQ requirements.
6.How does Aetrix verify that W25Q16DVSSIQ is sourced from the original manufacturer or authorized distributors?
All W25Q16DVSSIQ 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 W25Q16DVSSIQ meets industry standards.
7.What is the process for return or replacement of W25Q16DVSSIQ?
All W25Q16DVSSIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16DVSSIQ, 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 W25Q16DVSSIQ part is unused and in its original packaging.
Return procedure for W25Q16DVSSIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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