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Winbond Electronics Corporation W25Q16FWUUIQ
- Part No.:
- W25Q16FWUUIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
W25Q16FWUUIQ.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8USON
- Quantity:
- Payment:
- Shipping:
Inventory:3,540
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Product details
Overview
W25Q16FWUUIQ from Winbond is a 1.8V, 16M-bit serial flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, organized as 8192 × 256-byte pages with 4KB uniform sector erase, 32KB/64KB block erase, and chip erase - enabling code shadowing, XIP execution, and parameter storage in space-constrained embedded systems.
For engineers reviewing the W25Q16FWUUIQ datasheet, W25Q16FWUUIQ pinout, W25Q16FWUUIQ application, or W25Q16FWUUIQ equivalent, this page delivers verified pin functions, real-world timing performance (104MHz SPI, 416MHz Quad I/O equivalent), JEDEC ID and SFDP register support, 64-bit unique ID, and security register features - all confirmed for the exact W25Q16FWUUIQ orderable variant.
Technical Context
The W25Q16FWUUIQ implements a quad-peripheral interface (QPI) mode activated via 38h instruction, reducing instruction overhead to 2 clocks versus 8 in standard SPI; its non-volatile Quad Enable (QE) bit in Status Register-2 must be set to enable IO2 (/WP) and IO3 (/HOLD) functionality for Quad SPI and QPI operations.
It supports dual-mode /HOLD or /RESET selection on Pin 7 (IO3) depending on QE state and status register configuration, and integrates three 256-byte one-time-programmable (OTP) security registers with lock bits (LB[3:1]), plus volatile/non-volatile write protection via BP2–BP0, TB, SEC, CMP, and SRP0/SRP1 bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2 MB), organized as 8192 pages × 256 bytes - enables full firmware image storage with fine-grained 4KB sector update capability. |
| Supply Voltage | 1.65 V to 1.95 V - compatible with low-power 1.8V system rails; no level-shifting required for modern MCU I/O. |
| SPI Clock Frequency | Up to 104 MHz - delivers up to 50 MB/s continuous read throughput using Fast Read Quad I/O (EBh) instruction. |
| Erase Cycles | Minimum 100,000 program/erase cycles per sector - ensures long-term reliability in field-updatable embedded applications. |
| Data Retention | Greater than 20 years at +25°C - validated for industrial lifecycle requirements without refresh. |
| Interface Modes | Standard SPI (4-wire), Dual SPI (2 I/O), Quad SPI (4 I/O), and QPI (4-wire, 2-clock instruction decode) - selectable per application bandwidth and pin-count constraints. |
| Security Features | 64-bit unique ID, JEDEC SFDP register, three 256-byte OTP security registers with LB[3:1] locks, and hardware/software write protection - meets secure boot and device identity requirements. |
Pinout & Package
W25Q16FWUUIQ is packaged in an 8-pin USON 2x3-mm (package code UX), with exposed pad for thermal dissipation and footprint compatibility across WSON/USON variants. Pin assignments are identical to SOIC/VSOP/WSON footprints per Winbond's unified pinout specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO and standby current when deasserted - essential for multi-device SPI bus sharing. |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; becomes bidirectional IO1 in Dual/Quad SPI/QPI - enables full-duplex reads and command response. |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware write lock for status register when QE=0; repurposed as IO2 in Quad SPI/QPI - requires QE bit set to unlock full quad functionality. |
| 4 GND | Ground Reference | Primary return path for VCC and I/O signals; USON package includes thermal pad connected to GND for improved power dissipation. |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; becomes bidirectional IO0 in Dual/Quad SPI/QPI - carries instructions, addresses, and write data. |
| 6 CLK | Serial Clock Input | Edge-triggered timing reference for all SPI/QPI transfers; supports Mode 0 and Mode 3 clock polarity/idle states. |
| 7 /HOLD or /RESET (IO3) | Hold or Reset Input / Bidirectional I/O | Selectable function: hold active transfer when QE=0; reset device when configured via status register; becomes IO3 in Quad SPI/QPI - eliminates need for external reset controller. |
| 8 VCC | Power Supply | 1.65–1.95 V supply; internal regulation supports stable operation across voltage tolerance; <1 µA typical power-down current. |
Key Features
| Feature | Design Value |
|---|---|
| Continuous Read Mode | As few as 8 clocks to initiate address access - enables true execute-in-place (XIP) with minimal instruction overhead for real-time code execution. |
| Quad Peripheral Interface (QPI) | 2-clock instruction decode (vs. 8-clock standard SPI) - reduces command latency by 75%, critical for high-frequency polling or interrupt-driven firmware updates. |
| Erase/Program Suspend & Resume | Pause ongoing sector erase or page program to service higher-priority interrupts - preserves data integrity without requiring full re-initiation. |
| Individual Block/Sector Lock | 36h/39h instructions allow per-sector hardware locking - isolates bootloader or calibration data from accidental overwrite during field updates. |
| Discoverable Parameters (SFDP) | 5Ah instruction returns JEDEC-standard flash parameter table - enables automatic driver configuration across host platforms without hard-coded timing values. |
Applications
| Industrial HMI Display | IoT Edge Node Firmware Storage |
|---|---|
|
Use Scenario: Storing GUI assets, font libraries, and localized language strings in a compact panel-mounted HMI with limited PCB area and 1.8V logic rail. IC Role / Device Role / Timing Role: Non-volatile code and asset storage with XIP-capable Quad SPI interface - eliminates external RAM buffering and reduces boot latency. Use Value: 4KB sector granularity allows over-the-air (OTA) updates of individual UI modules without erasing full firmware, preserving calibration and user settings. |
Use Scenario: Holding secure firmware images, cryptographic keys, and sensor calibration data in battery-powered wireless sensor nodes operating at -40°C to +85°C. IC Role / Device Role / Timing Role: Trusted storage element with 64-bit unique ID and OTP security registers - anchors device identity and secure boot chain. Use Value: <1 µA power-down current extends battery life; JEDEC SFDP register enables auto-negotiated timing for reliable OTA updates across diverse MCU platforms. |
| Automotive ADAS Camera Module | Medical Diagnostic Handheld |
|
Use Scenario: Storing camera firmware, lens correction profiles, and runtime configuration parameters in AEC-Q100-compliant vision systems with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: High-reliability serial flash with 100K erase cycles and >20-year data retention - certified for automotive-grade operation. Use Value: USON 2x3-mm package minimizes board space; 104MHz SPI clock supports real-time firmware patching during vehicle diagnostics without disrupting video stream. |
Use Scenario: Retaining FDA-mandated calibration logs, patient history templates, and regulatory compliance metadata in portable diagnostic devices requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure, auditable memory with programmable write protection (BP/TB/CMP bits) and hardware /WP pin - enforces data immutability per medical software lifecycle standards. Use Value: Three 256-byte OTP security registers store cryptographic keys and audit trails; unique ID enables per-unit serialization for regulatory reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L1606EM1I-12G | Same 16M-bit density, 1.8V supply, and SOIC8/USON8 packages; supports Standard/Dual/Quad SPI but lacks QPI mode and SFDP register. | No QPI instruction set or auto-configurable timing - requires manual driver tuning; no 64-bit unique ID or OTP security registers. | Choose for cost-sensitive designs where QPI, SFDP, and security features are unnecessary and legacy SPI-only compatibility is sufficient. |
| AT25DF161-UUN-T | 16M-bit, 1.8V, SOIC8/USON8; supports Standard/Dual/Quad SPI and has 64-bit unique ID, but no QPI mode, no SFDP, and only 50K erase cycles. | Lacks QPI and SFDP; lower endurance limits field update frequency; no OTP security registers or individual sector lock commands. | Prefer when interoperability with older Atmel-based toolchains is required and extended endurance or advanced security is not mandated. |
Compared with MX25L1606EM1I-12G and AT25DF161-UUN-T, the W25Q16FWUUIQ delivers higher endurance (100K vs. 50K cycles), QPI mode for reduced instruction latency, JEDEC SFDP for plug-and-play timing, and dedicated OTP security registers - making it optimal for next-generation secure, updatable embedded systems.
Availability
W25Q16FWUUIQ is available at Aetrix Electronics and suitable for industrial HMI displays, IoT edge node firmware storage, and automotive ADAS camera modules requiring stable component supply, long-term lifecycle support, and guaranteed 1.8V-compatible serial flash performance.
Supply support for W25Q16FWUUIQ 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 global semiconductor manufacturer specializing in specialty memory solutions, including serial flash, PSRAM, and code storage products for embedded, industrial, and communications markets.
The W25Q16FWUUIQ belongs to Winbond's W25Q family of high-performance, low-voltage serial flash memories designed specifically for code execution (XIP), secure firmware storage, and parameter retention in resource-constrained 1.8V systems.
FAQ
What is the package type and footprint compatibility of W25Q16FWUUIQ?
W25Q16FWUUIQ uses an 8-pad USON 2x3-mm package (code UX) with exposed thermal pad. Its pinout matches Winbond's unified SOIC, VSOP, WSON, and USON footprints - enabling drop-in replacement across W25Q16FW variants without PCB redesign. The package supports reflow soldering per J-STD-020 and operates reliably from -40°C to +85°C.
Does W25Q16FWUUIQ support execute-in-place (XIP) operation, and what interface modes enable it?
Yes, W25Q16FWUUIQ supports true XIP via Continuous Read Mode and Quad SPI/QPI interfaces. Fast Read Quad I/O (EBh) and QPI instructions deliver up to 416MHz equivalent bandwidth and as few as 8 clocks to initiate memory access - eliminating need for external RAM buffering and enabling direct CPU execution from flash in real-time applications.
How is the /HOLD pin used in W25Q16FWUUIQ, and can it be reconfigured?
In W25Q16FWUUIQ, Pin 7 functions as /HOLD when the Quad Enable (QE) bit in Status Register-2 is cleared (QE=0); when QE=1, it becomes IO3 for Quad SPI/QPI. The /HOLD pin pauses active transfers while /CS is low - useful for multi-device SPI arbitration. It can also be configured as /RESET via status register settings, providing flexible control without external components.
What security features does W25Q16FWUUIQ provide beyond basic write protection?
W25Q16FWUUIQ includes 64-bit unique ID per unit, three 256-byte OTP security registers with LB[3:1] locks, JEDEC SFDP register for standardized parameter discovery, and granular hardware/software write protection (BP/TB/SEC/CMP bits). These features support secure boot, device authentication, and tamper-resistant calibration storage - exceeding basic /WP pin functionality.
What is the minimum number of program/erase cycles guaranteed for W25Q16FWUUIQ, and how is endurance distributed?
W25Q16FWUUIQ guarantees a minimum of 100,000 program/erase cycles per sector - validated across all 512 sectors. Endurance is uniform across the entire array; no wear-leveling controller is required. Combined with >20-year data retention at +25°C, this makes W25Q16FWUUIQ suitable for frequent-field-updatable applications like industrial controllers and medical firmware.
W25Q16FWUUIQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 60µs, 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)
W25Q16FWUUIQ FAQ
1.How can I place an order for W25Q16FWUUIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16FWUUIQ 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 W25Q16FWUUIQ reliable?
The price and inventory of W25Q16FWUUIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16FWUUIQ is usually 5 days.
3.What payment methods are accepted for W25Q16FWUUIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16FWUUIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16FWUUIQ?
W25Q16FWUUIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16FWUUIQ 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 W25Q16FWUUIQ?
For technical support, including W25Q16FWUUIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16FWUUIQ requirements.
6.How does Aetrix verify that W25Q16FWUUIQ is sourced from the original manufacturer or authorized distributors?
All W25Q16FWUUIQ 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 W25Q16FWUUIQ meets industry standards.
7.What is the process for return or replacement of W25Q16FWUUIQ?
All W25Q16FWUUIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16FWUUIQ, 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 W25Q16FWUUIQ part is unused and in its original packaging.
Return procedure for W25Q16FWUUIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q16FWUUIQ Tags
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