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Winbond Electronics Corporation W25Q16FWUXIE

Name: W25Q16FWUXIE
Brand: Winbond Electronics Corporation
SKU: W25Q16FWUXIE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: W25Q16FWUXIE

Manufacturer:: Winbond Electronics Corporation

Category:: Memory

Package:: 8-UFDFN Exposed Pad

Datasheet:: W25Q16FWUXIE.pdf

Description:: IC FLASH 16MBIT SPI/QUAD 8USON

Quantity:: RFQ Add To RFQ list

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Product details

Overview

W25Q16FWUXIE from Winbond is a 1.8V, 16M-bit serial NOR flash memory supporting Standard/Dual/Quad SPI and QPI interfaces, organized as 8192 × 256-byte pages with 4KB uniform sector erase granularity, enabling code shadowing and execute-in-place (XIP) in space-constrained embedded systems.

For engineers reviewing the W25Q16FWUXIE datasheet, W25Q16FWUXIE pinout, W25Q16FWUXIE application, or W25Q16FWUXIE equivalent, this page delivers verified electrical specs, validated pin functions across USON 2x3-mm (UX) package, JEDEC-compliant ID support, and real-world XIP timing behavior - critical for boot firmware, IoT sensor node storage, and industrial controller code execution.

Technical Context

The W25Q16FWUXIE implements a quad-peripheral interface (QPI) mode requiring non-volatile QE bit enablement in Status Register-2, reducing instruction overhead to two clock cycles versus eight in standard SPI. Its dual/quad I/O operation relies on dynamic pin remapping: /WP and /HOLD become IO2 and IO3 only when QE=1, disabling hardware write protection and hold functionality during Quad SPI/QPI use.

It supports three erase granularities - 4KB sectors (512 total), 32KB blocks (32 total), and 64KB blocks (16 total) - with program-erase suspend/resume capability and 100K-cycle endurance per sector. The device features volatile/non-volatile status register bits (BP2–BP0, TB, SEC, CMP, SRP1/SRP0), 64-bit unique ID, and three 256-byte OTP-lockable security registers.

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 in compact footprint.
Supply Voltage	1.65 V to 1.95 V - compatible with low-power 1.8V system rails; no level-shifting required for modern MCUs.
Max Clock Frequency	104 MHz SPI; 208 MHz equivalent Dual I/O; 416 MHz equivalent Quad I/O - achieves up to 50 MB/s continuous read throughput.
Erase Granularity	Uniform 4KB sectors (512), 32KB blocks (32), 64KB blocks (16) - supports fine-grained parameter updates without disturbing adjacent firmware sections.
Endurance & Retention	100,000 program/erase cycles per sector; >20 years data retention - suitable for field-upgradable firmware with frequent OTA updates.
Interface Modes	Standard SPI (DI/DO), Dual SPI (IO0/IO1), Quad SPI (IO0–IO3), QPI (all four IOs for instruction + data) - selectable via status register and command set.
Security Features	64-bit unique ID, SFDP register, three 256-byte security registers with OTP locks, top/bottom/complement block protection - meets secure boot and anti-cloning requirements.

Pinout & Package

W25Q16FWUXIE is packaged in an 8-pad USON 2×3×0.6 mm³ (Package Code UX), surface-mount, lead-free, RoHS-compliant package with wettable flank terminals for automated optical inspection (AOI).

Pin/Terminal	Circuit Role	Design Meaning
1 /CS	Chip Select Input	Active-low enable; high-impedance DO output and standby current (<1 µA) when deasserted; must transition high→low after power-up before first instruction.
2 DO (IO1)	Data Output / Bidirectional I/O1	Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad SPI/QPI; used for Fast Read Dual/Quad Output and instruction response.
3 /WP (IO2)	Write Protect Input / Bidirectional I/O2	Hardware write-protection for status register when QE=0; becomes IO2 in Quad SPI/QPI (QE=1), disabling /WP function.
4 GND	Ground Reference	Primary return path for all I/O and core logic; requires low-impedance connection to minimize noise coupling into SPI signaling.
5 DI (IO0)	Data Input / Bidirectional I/O0	Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI/QPI; carries instructions, addresses, and program data on rising CLK edge.
6 CLK	Serial Clock Input	Master-generated timing reference; supports Mode 0 and Mode 3 SPI; 104 MHz max frequency defines worst-case setup/hold timing margins.
7 /HOLD (IO3)	Hold Input / Bidirectional I/O3	Pauses active SPI transaction when asserted low (QE=0); becomes IO3 in Quad SPI/QPI (QE=1), disabling hold functionality.
8 VCC	Power Supply	1.65–1.95 V supply; internal LDO regulates core voltage; decoupling capacitor (≥1 µF) required within 5 mm of pin for stable read/write timing.

Key Features

Feature	Design Value
Continuous Read Mode with Wrap	As few as 8 clocks to initiate address transfer; supports 8/16/32/64-byte wrap for burst-aligned access - reduces instruction overhead in XIP applications.
Quad Peripheral Interface (QPI)	Two-clock instruction fetch (vs. eight in SPI) using all four IO lines - cuts command latency by 75%, accelerating boot-time code fetch from flash.
Erase/Program Suspend & Resume	Halts ongoing sector erase or page program to service higher-priority interrupts; resumes from exact point - prevents data corruption during real-time task switching.
Volatile & Non-Volatile Status Control	BP2–BP0, TB, SEC, CMP, SRP1/SRP0 bits configurable as volatile (power-on reset) or non-volatile (OTP-latched) - enables flexible, field-updatable memory protection schemes.
JEDEC ID + Unique 64-bit Serial Number	Returns manufacturer ID (EFh), device ID (4015h), and factory-programmed unique ID via 4Bh command - enables secure device authentication and inventory traceability.

Applications

Industrial PLC Firmware Storage	IoT Edge Sensor Node Logging
Use Scenario: Storing and updating ladder logic firmware and configuration parameters in programmable logic controllers operating in harsh environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Non-volatile code and data storage with 4KB sector erase enabling atomic firmware patching without full reflash. Use Value: 100K-cycle endurance and 20-year retention ensure reliable operation over 10+ year product lifecycles without field replacement.	Use Scenario: Capturing timestamped sensor readings (temperature, humidity, motion) in battery-powered wireless nodes with infrequent wake-ups. IC Role / Device Role / Timing Role: Low-power data logger using <1 µA power-down current and fast wake-up (<5 µs) to minimize energy per measurement cycle. Use Value: 1.8V operation and 4mA active current extend coin-cell battery life beyond 5 years in duty-cycled deployments.
Medical Diagnostic Device Boot Memory	Automotive Infotainment System Code Storage
Use Scenario: Hosting boot ROM and safety-critical diagnostic routines in portable ultrasound and ECG devices requiring IEC 62304 compliance. IC Role / Device Role / Timing Role: Execute-in-place (XIP) source for ARM Cortex-M4 core, leveraging 104 MHz SPI and QPI modes for deterministic boot timing. Use Value: QPI's 2-clock instruction fetch reduces boot latency by 60% vs. standard SPI, meeting sub-500ms cold-start requirements.	Use Scenario: Storing HMI graphics assets, navigation map tiles, and audio codec firmware in head-unit systems with strict AEC-Q100 Grade 2 qualification needs. IC Role / Device Role / Timing Role: High-throughput code/data repository interfaced to application processor via Quad SPI at 416 MHz equivalent bandwidth. Use Value: 50 MB/s continuous read rate enables seamless 1080p UI rendering and zero-buffering audio playback directly from flash.

Industrial PLC Firmware Storage

IoT Edge Sensor Node Logging

Use Scenario: Storing and updating ladder logic firmware and configuration parameters in programmable logic controllers operating in harsh environments (-40°C to +85°C).

IC Role / Device Role / Timing Role: Non-volatile code and data storage with 4KB sector erase enabling atomic firmware patching without full reflash.

Use Value: 100K-cycle endurance and 20-year retention ensure reliable operation over 10+ year product lifecycles without field replacement.

Use Scenario: Capturing timestamped sensor readings (temperature, humidity, motion) in battery-powered wireless nodes with infrequent wake-ups.

IC Role / Device Role / Timing Role: Low-power data logger using <1 µA power-down current and fast wake-up (<5 µs) to minimize energy per measurement cycle.

Use Value: 1.8V operation and 4mA active current extend coin-cell battery life beyond 5 years in duty-cycled deployments.

Medical Diagnostic Device Boot Memory

Automotive Infotainment System Code Storage

Use Scenario: Hosting boot ROM and safety-critical diagnostic routines in portable ultrasound and ECG devices requiring IEC 62304 compliance.

IC Role / Device Role / Timing Role: Execute-in-place (XIP) source for ARM Cortex-M4 core, leveraging 104 MHz SPI and QPI modes for deterministic boot timing.

Use Value: QPI's 2-clock instruction fetch reduces boot latency by 60% vs. standard SPI, meeting sub-500ms cold-start requirements.

Use Scenario: Storing HMI graphics assets, navigation map tiles, and audio codec firmware in head-unit systems with strict AEC-Q100 Grade 2 qualification needs.

IC Role / Device Role / Timing Role: High-throughput code/data repository interfaced to application processor via Quad SPI at 416 MHz equivalent bandwidth.

Use Value: 50 MB/s continuous read rate enables seamless 1080p UI rendering and zero-buffering audio playback directly from flash.

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
MX25L1606EM1I-12G	Same 16M-bit density, 1.65–2.0V supply, but supports only Standard/Dual SPI (no Quad SPI or QPI); max clock 80 MHz.	Lacks QPI and Quad I/O modes - unsuitable for XIP applications requiring >30 MB/s throughput or minimal instruction overhead.	Select when cost sensitivity outweighs performance needs and design uses only basic SPI peripherals.
S25FL116K0XMFI011	16M-bit, 2.7–3.6V supply; supports Quad SPI and QPI, but requires 3.3V rail and lacks 1.8V compatibility.	Incompatible with 1.8V SoC interfaces; requires level-shifting or separate power domain - increases BOM count and layout complexity.	Choose only if existing 3.3V infrastructure prohibits 1.8V adoption and QPI/XIP benefits justify voltage translation.

Compared with MX25L1606EM1I-12G and S25FL116K0XMFI011, W25Q16FWUXIE uniquely delivers 1.8V operation with full Quad SPI and QPI support - enabling direct MCU integration, lowest power consumption, and highest deterministic throughput in size- and energy-constrained designs.

Availability

W25Q16FWUXIE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, IoT edge sensor node logging, medical diagnostic device boot memory, automotive infotainment code storage, and consumer electronics firmware updates requiring stable component supply across multi-year production cycles.

Supply support for W25Q16FWUXIE 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 NOR/NAND flash, RAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.

W25Q16FWUXIE belongs to Winbond's W25Q family of high-performance serial NOR flash memories, designed specifically for execute-in-place (XIP) code execution, secure firmware storage, and low-voltage embedded applications demanding reliability and density efficiency.

FAQ

What is the package type and dimensions of the W25Q16FWUXIE?

The W25Q16FWUXIE uses an 8-pad USON (Ultra Thin Small Outline No-lead) package measuring 2.0 mm × 3.0 mm × 0.6 mm (L×W×H), with wettable flank terminals for reliable solder joint inspection. This package code "UX" is explicitly listed in Winbond's datasheet Section 10.5 and ordering information table.

Does the W25Q16FWUXIE support Quad SPI and QPI modes, and what configuration is required?

Yes, the W25Q16FWUXIE supports both Quad SPI and QPI modes. Activation requires setting the non-volatile Quad Enable (QE) bit in Status Register-2 (SR2). Once QE=1, pins /WP and /HOLD become IO2 and IO3 respectively, enabling four-line data transfer and two-clock instruction fetch in QPI mode.

What is the maximum clock frequency and corresponding data throughput for the W25Q16FWUXIE?

The W25Q16FWUXIE supports up to 104 MHz SPI clock frequency, delivering 208 MHz equivalent throughput in Dual I/O mode and 416 MHz equivalent in Quad I/O mode. Real-world continuous read performance reaches 50 MB/s using Fast Read Quad I/O (EBh) or QPI instructions.

How does the W25Q16FWUXIE handle write protection - is it hardware- or software-based?

The W25Q16FWUXIE provides both hardware- and software-based write protection. Hardware protection uses the /WP pin (active-low) to lock the status register when QE=0. Software protection uses status register bits (BP2–BP0, TB, SEC, CMP, SRP1/SRP0) to protect sectors or the entire array, with volatile or non-volatile persistence.

Can the W25Q16FWUXIE be used for execute-in-place (XIP) applications, and what features enable this?

Yes, the W25Q16FWUXIE is explicitly designed for XIP. Key enablers include Continuous Read Mode (as few as 8 clocks to initiate address transfer), Quad SPI and QPI interfaces for high bandwidth, uniform 4KB sector architecture for atomic updates, and guaranteed 100K-cycle endurance to sustain frequent code patching.

W25Q16FWUXIE 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 (2x3)

W25Q16FWUXIE FAQ

1.How can I place an order for W25Q16FWUXIE through Aetrix?

Please submit a Request for Quotation (RFQ) for W25Q16FWUXIE 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 W25Q16FWUXIE reliable?

The price and inventory of W25Q16FWUXIE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16FWUXIE is usually 5 days.

3.What payment methods are accepted for W25Q16FWUXIE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16FWUXIE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for W25Q16FWUXIE?

W25Q16FWUXIE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your W25Q16FWUXIE 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 W25Q16FWUXIE?

For technical support, including W25Q16FWUXIE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16FWUXIE requirements.

6.How does Aetrix verify that W25Q16FWUXIE is sourced from the original manufacturer or authorized distributors?

All W25Q16FWUXIE 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 W25Q16FWUXIE meets industry standards.

7.What is the process for return or replacement of W25Q16FWUXIE?

All W25Q16FWUXIE units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16FWUXIE, 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 W25Q16FWUXIE part is unused and in its original packaging.

Return procedure for W25Q16FWUXIE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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