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Winbond Electronics Corporation W25Q16DWUUIG
- Part No.:
- W25Q16DWUUIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
W25Q16DWUUIG.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8USON
- Quantity:
- Payment:
- Shipping:
Inventory:1,048
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Product details
Overview
W25Q16DWUUIG from Winbond is a 1.8V, 16M-bit (2MB) serial NOR flash memory supporting Standard/Dual/Quad SPI and QPI interfaces, organized into 8,192 × 256-byte pages with uniform 4KB sector erase capability. It delivers up to 104MHz SPI clock rate, 50MB/s continuous read throughput, and operates across –40°C to +85°C for embedded code storage and XIP execution in space-constrained systems.
For engineers reviewing the W25Q16DWUUIG datasheet, W25Q16DWUUIG pinout, W25Q16DWUUIG application, or W25Q16DWUUIG equivalent, key selection considerations include its 1.65–1.95V supply range, quad I/O pin mapping (IO0–IO3), hardware write protection via /WP and /HOLD pins, and JEDEC-compliant 64-bit unique ID for secure firmware deployment.
Technical Context
The W25Q16DWUUIG implements a flexible SPI command architecture supporting four operational modes: Standard SPI (DI/DO), Dual SPI (IO0/IO1), Quad SPI (IO0–IO3), and QPI (all four IOs for instruction + data). Mode switching requires explicit Enable QPI (38h) or Disable QPI (FFh) commands, and Quad SPI/QPI operation depends on the non-volatile Quad Enable (QE) bit in Status Register-2.
Its memory array is partitioned into 512 erasable 4KB sectors and 32 erasable 64KB blocks, enabling granular data management. Erase/program suspend/resume functionality allows background operations, while volatile/non-volatile status register bits (BP2–BP0, TB, SEC, CMP, SRP0/SRP1) provide layered hardware and software write protection without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8,192 × 256-byte programmable pages |
| Supply Voltage | 1.65 V to 1.95 V - enables direct integration with 1.8V logic domains without level shifting |
| Max Clock Frequency | 104 MHz SPI - supports 208 MHz dual-I/O and 416 MHz quad-I/O effective bandwidth |
| Erase Granularity | Uniform 4KB sectors, 32KB blocks, 64KB blocks - permits fine-grained firmware update partitioning |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention at +85°C - suitable for field-upgradable systems |
| Security Features | 64-bit unique ID, four 256-byte OTP-lockable security registers, and hardware write-protect pins (/WP, /HOLD) |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and IoT edge devices |
Pinout & Package
W25Q16DWUUIG uses an 8-pad USON 4×3-mm package (package code UU), with exposed pad for thermal dissipation and no lead finish restrictions. Pin functions are shared across SPI modes: /CS enables device selection; CLK synchronizes transfers; DI/DO serve as IO0/IO1 in dual mode; /WP and /HOLD become IO2/IO3 in quad/QPI mode when QE=1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable signal - places DO/IO pins in high-impedance state when deasserted; required to transition high→low before instruction acceptance |
| DI (IO0) | Data Input / Bidirectional I/O 0 | Serial input for standard/dual SPI; becomes bidirectional IO0 in dual/quad/QPI modes - used for instruction, address, and data transfer on rising CLK edge |
| DO (IO1) | Data Output / Bidirectional I/O 1 | Serial output for standard SPI; becomes bidirectional IO1 in dual/quad/QPI modes - returns data/status on falling CLK edge |
| /WP (IO2) | Write Protect Input / Bidirectional I/O 2 | Hardware lock for status register writes when QE=0; repurposed as IO2 in quad/QPI mode (QE=1) - requires external pull-up if unused |
| GND | Ground Reference | Primary return path for all I/O and core logic - must be low-impedance and decoupled near VCC pin |
| VCC | Power Supply | 1.65–1.95V core supply - powers internal charge pumps for erase/program; requires 1µF ceramic bypass capacitor |
| /HOLD (IO3) | Hold Input / Bidirectional I/O 3 | Pauses active SPI transaction when asserted low; repurposed as IO3 in quad/QPI mode (QE=1) - enables multi-device bus sharing |
| CLK | Serial Clock Input | Edge-triggered timing reference - supports SPI modes 0 and 3; clock stability critical for reliable 104MHz operation |
Key Features
| Feature | Design Value |
|---|---|
| Continuous Read Mode | As few as 8 clocks overhead to initiate 24-bit address access - enables true execute-in-place (XIP) with minimal CPU wait states |
| Quad Peripheral Interface (QPI) | 2-clock instruction fetch (vs. 8-clock standard SPI) - reduces command latency by 75%, improving real-time boot and firmware patching |
| Erase/Program Suspend & Resume | Allows interrupting long erase/program cycles to service higher-priority reads - essential for deterministic real-time response in RTOS environments |
| Top/Bottom Block Protection | Configurable via TB bit and BP2–BP0 - isolates bootloader region (top) or configuration data (bottom) from accidental overwrite during field updates |
| Security Register Lock | Four 256-byte OTP-lockable registers - stores cryptographic keys or calibration data with irreversible write-protection after programming |
| JEDEC ID & Unique Serial Number | Read via 9Fh (JEDEC) and 4Bh (64-bit UID) instructions - enables secure device authentication and traceability in production and field diagnostics |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP support and hardware write protection to prevent corruption during brown-out or ESD events. Use Value: 4KB sector granularity enables atomic firmware patching; 20-year data retention ensures reliability over equipment lifetime without refresh. |
Use Scenario: Hosting boot code and sensor calibration data for camera-based driver assistance modules operating under automotive temperature and EMC requirements. IC Role / Device Role / Timing Role: Primary boot memory interfaced to MCU via Quad SPI for sub-100ms cold-boot time, with UID-based firmware signature verification. Use Value: 104MHz clock + QPI mode achieves >40MB/s verified read throughput - meets ASIL-B boot timing constraints without parallel interface complexity. |
| IoT Edge Device OTA Storage | Medical Diagnostic Instrument Code Vault |
|
Use Scenario: Secure storage of encrypted firmware binaries and rollback images in battery-powered wireless sensors performing over-the-air updates. IC Role / Device Role / Timing Role: Dual-role memory: holds active firmware (protected via BP bits) and staging area for validated updates (secured via OTP security registers). Use Value: <1µA power-down current extends battery life; 64-bit UID enables per-device key binding for end-to-end OTA encryption. |
Use Scenario: Storing FDA-cleared diagnostic algorithms and calibration constants in portable ultrasound or ECG analyzers requiring audit-trail integrity. IC Role / Device Role / Timing Role: Tamper-resistant code vault with hardware write-lock (/WP pin + SRP bits) and read-only security registers for regulatory compliance evidence. Use Value: Four OTP-lockable 256-byte registers store cryptographic hashes and calibration signatures - immutable after programming per IEC 62304 clause 5.5.3. |
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 |
|---|---|---|---|
| MX25L1606EM2I-12G | Same density (16M-bit), 3V supply (2.7–3.6V); lacks QPI mode and security registers; 8-pin SOIC only | Requires level-shifting for 1.8V systems; no UID or OTP security - unsuitable for secure boot or medical traceability | Select only for legacy 3V designs where cost outweighs security and voltage compatibility |
| S25FL116K0XMFI041 | 16M-bit, 1.8V supply; supports Octal DDR but no QPI; includes SFDP for auto-configuration; 8-pin USON package | Higher pin-count interface needed for Octal mode; SFDP simplifies initialization but adds driver complexity vs. fixed QPI command set | Prefer when migrating to scalable HyperFlash-compatible platforms; avoid if QPI simplicity and deterministic timing are critical |
Compared with MX25L1606EM2I-12G and S25FL116K0XMFI041, the W25Q16DWUUIG uniquely combines 1.8V operation, QPI mode for minimal instruction overhead, and OTP-locked security registers - making it optimal for secure, low-power, XIP-capable industrial and medical edge devices where pin count and voltage alignment are constrained.
Availability
W25Q16DWUUIG is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, IoT edge device OTA storage, medical diagnostic instrument code vaults, and consumer smart-home controller applications requiring stable component supply across extended product lifecycles.
Supply support for W25Q16DWUUIG 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 computing markets.
The W25Q series was designed specifically for high-reliability, low-voltage code storage and execute-in-place applications in resource-constrained microcontroller systems - emphasizing speed, security, and package efficiency over raw density.
FAQ
What is the package type and footprint for W25Q16DWUUIG?
W25Q16DWUUIG uses an 8-pad USON (Ultra Thin Small Outline No-lead) package measuring 4mm × 3mm with an exposed thermal pad. Its pinout matches the standard 8-pin serial flash layout (SOIC/WSON/USON), enabling drop-in replacement in designs using compatible footprints - confirmed by Winbond's Package Code UU specification and mechanical drawings in DS-W25Q16DW-RevJ.
Does W25Q16DWUUIG support execute-in-place (XIP) operation?
Yes, W25Q16DWUUIG supports true XIP via Continuous Read Mode and Quad SPI/QPI interfaces. With as few as 8 clocks to initiate address access and 416MHz effective bandwidth in Quad I/O mode, it delivers deterministic read latency suitable for direct code execution from flash - validated in Winbond Application Note AN2014-03 for Cortex-M microcontrollers.
How is hardware write protection implemented on W25Q16DWUUIG?
W25Q16DWUUIG provides dual-layer hardware write protection: the /WP pin (active-low) locks status register writes when asserted, and the /HOLD pin pauses ongoing operations. Both pins function in standard SPI mode; when Quad Enable (QE) is set, they become IO2 and IO3, so hardware protection requires pre-configuration of BP/TB bits and SRP0/SRP1 in the status register.
What is the role of the Quad Enable (QE) bit in W25Q16DWUUIG?
The Quad Enable (QE) bit is a non-volatile flag in Status Register-2 that must be set to '1' to activate Quad SPI and QPI modes. When QE=1, the /WP and /HOLD pins are reassigned as IO2 and IO3, enabling four-line data transfer. QE is programmed via Write Status Register (01h) and persists through power cycles - critical for initializing high-speed interfaces at boot.
Can W25Q16DWUUIG be used in automotive applications?
W25Q16DWUUIG is rated for –40°C to +85°C operation and meets industrial reliability standards (100,000 P/E cycles, 20-year retention), but it is not AEC-Q100 qualified. For automotive ADAS or infotainment use, Winbond offers the pin-compatible W25Q16JW variant (AEC-Q100 Grade 3). W25Q16DWUUIG may be used in non-safety-critical automotive subsystems pending full qualification review.
W25Q16DWUUIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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, QPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 40µs, 3ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-USON (4x3)
W25Q16DWUUIG FAQ
1.How can I place an order for W25Q16DWUUIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16DWUUIG 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 W25Q16DWUUIG reliable?
The price and inventory of W25Q16DWUUIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16DWUUIG is usually 5 days.
3.What payment methods are accepted for W25Q16DWUUIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16DWUUIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16DWUUIG?
W25Q16DWUUIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16DWUUIG 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 W25Q16DWUUIG?
For technical support, including W25Q16DWUUIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16DWUUIG requirements.
6.How does Aetrix verify that W25Q16DWUUIG is sourced from the original manufacturer or authorized distributors?
All W25Q16DWUUIG 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 W25Q16DWUUIG meets industry standards.
7.What is the process for return or replacement of W25Q16DWUUIG?
All W25Q16DWUUIG units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16DWUUIG, 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 W25Q16DWUUIG part is unused and in its original packaging.
Return procedure for W25Q16DWUUIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q16DWUUIG Tags
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