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Winbond Electronics Corporation W25Q16JWUUSQ
- Part No.:
- W25Q16JWUUSQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
W25Q16JWUUSQ.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8USON
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
W25Q16JWUUSQ from Winbond is a 1.8V, 16M-bit (2MB) serial NOR flash memory supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz clock frequency, 4KB uniform sector architecture, and hardware/software write protection - deployed in embedded boot code storage, firmware update partitions, and parameter retention in industrial controllers.
For engineers reviewing the W25Q16JWUUSQ datasheet, W25Q16JWUUSQ pinout, W25Q16JWUUSQ application, or W25Q16JWUUSQ equivalent, this page delivers verified pin functions, JEDEC-compliant ID support, SFDP register access, 64-bit unique serial number, and real-world erase/program cycle endurance (≥100K cycles) for reliable BOM selection and layout validation.
Technical Context
The W25Q16JWUUSQ implements a quad I/O SPI interface requiring non-volatile Quad Enable (QE) bit set in Status Register-2 to activate IO2 (/WP) and IO3 (/HOLD) pins; it supports SPI modes 0 and 3, Fast Read Quad I/O (EBh) at 133MHz yielding 532Mbps effective throughput, and executes XIP (execute-in-place) directly from flash in dual/quad mode.
Its memory array comprises 8192 × 256-byte pages organized into 512 erasable 4KB sectors and 32 erasable 64KB blocks; erase suspend/resume, individual block lock (39h/36h), and three 256-byte security registers enable secure firmware partitioning and field-upgrade integrity in resource-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes) - sufficient for full MCU boot image + configuration + OTA update staging area |
| Supply Voltage | 1.65V to 1.95V - compatible with low-power 1.8V system rails; eliminates level-shifting in modern SoC designs |
| Max Clock Frequency | 133 MHz Quad I/O - enables 66 MB/s continuous read transfer, outperforming parallel 16-bit flash in bandwidth-per-pin |
| Erase Granularity | 4KB sectors / 32KB & 64KB blocks - allows fine-grained firmware partitioning without over-erasing critical parameters |
| Endurance & Retention | ≥100,000 program/erase cycles; >20 years data retention - validated for industrial temperature cycling (-40°C to +85°C) |
| Security Features | 64-bit unique ID, SFDP register, 3×256-byte security registers, OTP-lockable LB bits - supports device authentication and encrypted firmware binding |
| Write Protection | Hardware /WP pin + volatile/non-volatile status register bits (BP2–BP0, TB, SEC, CMP, SRP) - enables layered protection against accidental or malicious writes |
Pinout & Package
W25Q16JWUUSQ uses an 8-pad USON 4×3-mm package (Package Code UU), with exposed pad for thermal dissipation and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; must track VCC during power-up/down to prevent spurious commands; high-impedance DO when deasserted |
| 2 DO (IO1) | Data Output / Quad I/O Line 1 | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad mode; used for Fast Read Dual Output (3Bh) and Quad I/O (EBh) |
| 3 /WP (IO2) | Write Protect Input / Quad I/O Line 2 | Hardware write lock for status register; becomes IO2 in Quad mode when QE=1; active-low, internally pulled up |
| 4 GND | Ground Reference | Primary return path for all I/O and core logic; requires low-inductance connection to minimize noise on SPI signals |
| 5 DI (IO0) | Data Input / Quad I/O Line 0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad mode; carries instructions, addresses, and data on rising CLK edge |
| 6 CLK | Serial Clock Input | Master-generated timing signal; supports SPI modes 0 and 3; 133MHz max for Quad I/O; edge-aligned data sampling |
| 7 /HOLD (IO3) | Hold Input / Quad I/O Line 3 | Pauses ongoing SPI transaction when low (active-low); repurposed as IO3 in Quad mode when QE=1; not available in SOIC-8 |
| 8 VCC | Power Supply | 1.65–1.95V core supply; <0.1µA typical power-down current; decoupling capacitor required per datasheet layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O SPI Interface | Enables 4-line data transfer (IO0–IO3) after QE bit set - doubles bandwidth vs Dual SPI and quadruples vs Standard SPI |
| Erase/Program Suspend | 75h/7Ah instructions allow pausing long erase/program operations to service time-critical interrupts - essential for real-time firmware updates |
| Individual Block Lock | 39h/36h commands lock/unlock each 64KB block or 4KB sector independently - prevents corruption of bootloader or calibration data during field updates |
| JEDEC ID & SFDP | 9Fh instruction returns standard manufacturer/device ID; 5Ah reads Serial Flash Discoverable Parameters - enables auto-configuration in generic flash drivers |
| 64-bit Unique ID | 4Bh instruction retrieves factory-programmed immutable serial number - used for device binding, license enforcement, and anti-cloning |
| Voltage-Tolerant I/O | All I/O pins operate at 1.65–1.95V with ±0.3V tolerance - eliminates need for external level shifters when interfacing with 1.8V or 3.3V masters |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Partition |
|---|---|
Use Scenario: Storing certified bootloader and safety-critical application firmware in programmable flash with tamper-resistant write protection. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable Quad SPI interface enabling deterministic boot timing and runtime execution. Use Value: 4KB sector granularity allows isolated update of application firmware without erasing bootloader; 100K-cycle endurance ensures >10-year field life under frequent OTA updates. |
Use Scenario: Securing FDA-regulated boot code and calibration data in portable diagnostic equipment requiring traceable firmware revisions. IC Role / Device Role / Timing Role: Trusted firmware repository with 64-bit unique ID and security registers for cryptographic key binding and revision audit trails. Use Value: Individual block lock (39h) prevents unauthorized modification of calibration sectors; SFDP register enables automatic driver compatibility across product generations. |
| Smart Meter Parameter Retention | Automotive ADAS Camera Module |
Use Scenario: Retaining tariff tables, metering logs, and communication profiles across power cycles and firmware upgrades in utility-grade smart meters. IC Role / Device Role / Timing Role: High-reliability parameter storage with hardware /WP pin and non-volatile BP bits ensuring data integrity during brown-out events. Use Value: -40°C to +85°C operation and >20-year data retention meet ANSI C12.1 and IEC 62056 requirements; low 0.1µA power-down current extends battery backup life. |
Use Scenario: Hosting camera ISP firmware and lens calibration data in compact automotive vision modules where board space and thermal budget are constrained. IC Role / Device Role / Timing Role: Compact 4×3-mm USON flash providing fast Quad I/O read access for real-time image processing pipeline initialization. Use Value: 133MHz Quad I/O delivers 66MB/s read speed - reduces boot latency by >40% vs legacy SPI flash; WSON-compatible footprint eases thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L1633FZUI-10G | 3V supply (2.7–3.6V); no /HOLD pin in 8-pin USON; lacks SFDP register and unique ID | Not suitable for 1.8V systems; limited security features reduce suitability for certified medical or industrial firmware | Select only if existing 3V design requires drop-in replacement and security features are unused |
| S25FL116K0XMFI043 | 1.8V supply; 16Mb density; supports Quad SPI but max 80MHz clock; no individual block lock or security registers | Lower bandwidth limits XIP performance; absence of 64-bit ID and security registers restricts use in traceable/secure deployments | Prefer for cost-sensitive consumer applications where full W25Q16JWUUSQ feature set is unnecessary |
Compared with MX25L1633FZUI-10G and S25FL116K0XMFI043, the W25Q16JWUUSQ uniquely combines 1.8V operation, 133MHz Quad I/O, individual block locking, and 64-bit unique ID - making it the only option among the three qualified for safety-certified industrial firmware storage with field-upgrade integrity.
Availability
W25Q16JWUUSQ is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader partitioning, and smart meter parameter retention requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for W25Q16JWUUSQ 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 trusted computing components.
The W25Q16JWUUSQ belongs to Winbond's W25Q "SpiFlash" family, engineered for high-speed, low-voltage embedded code storage and secure firmware management in industrial, medical, and automotive applications.
FAQ
What is the operating voltage range for W25Q16JWUUSQ?
The W25Q16JWUUSQ operates from 1.65V to 1.95V, making it compatible with modern 1.8V system rails. This narrow voltage window ensures low power consumption (<0.1µA in power-down) and eliminates the need for level shifters when interfacing with 1.8V microcontrollers. The device includes built-in power-on reset circuitry that holds operations inactive until VCC exceeds the threshold VWI, preventing spurious writes during power ramp-up.
Does W25Q16JWUUSQ support execute-in-place (XIP) functionality?
Yes, the W25Q16JWUUSQ supports XIP in both Dual and Quad SPI modes, allowing microcontrollers to execute code directly from flash without copying to RAM. This capability relies on Fast Read Dual I/O (BBh) or Fast Read Quad I/O (EBh) instructions and requires the Quad Enable (QE) bit in Status Register-2 to be set for Quad mode. XIP reduces boot latency and conserves SRAM in resource-constrained embedded systems.
How is write protection implemented on W25Q16JWUUSQ?
W25Q16JWUUSQ implements multi-layer write protection: hardware via the active-low /WP pin, software via status register bits (BP2–BP0, TB, SEC, CMP), and firmware-level via individual block lock commands (39h/36h). The WPS bit in Status Register-3 selects between status-register-based or individual-block-based schemes. All protections persist through power cycles when configured as non-volatile, and the /WP pin remains functional even when QE=1.
What package type does W25Q16JWUUSQ use, and is it RoHS compliant?
W25Q16JWUUSQ uses an 8-pad USON 4×3-mm package (Package Code UU) with wettable flanks and RoHS-compliant matte tin finish. This package supports automated optical inspection (AOI) and offers superior thermal performance over SOIC due to its exposed thermal pad. It meets JEDEC J-STD-020 moisture sensitivity level 3 and is qualified for reflow soldering per IPC/JEDEC J-STD-020.
Can W25Q16JWUUSQ be used in automotive applications?
The W25Q16JWUUSQ is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. While it has been deployed in non-safety-critical automotive subsystems like infotainment and camera modules, Winbond does not certify it for under-hood or ASIL-B/C applications. For automotive-grade alternatives, consult Winbond's AEC-Q100-qualified W25Q16JWxxIQ series variants.
W25Q16JWUUSQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- 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, DTR
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-USON (4x3)
W25Q16JWUUSQ FAQ
1.How can I place an order for W25Q16JWUUSQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16JWUUSQ 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 W25Q16JWUUSQ reliable?
The price and inventory of W25Q16JWUUSQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16JWUUSQ is usually 5 days.
3.What payment methods are accepted for W25Q16JWUUSQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16JWUUSQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16JWUUSQ?
W25Q16JWUUSQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16JWUUSQ 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 W25Q16JWUUSQ?
For technical support, including W25Q16JWUUSQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16JWUUSQ requirements.
6.How does Aetrix verify that W25Q16JWUUSQ is sourced from the original manufacturer or authorized distributors?
All W25Q16JWUUSQ 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 W25Q16JWUUSQ meets industry standards.
7.What is the process for return or replacement of W25Q16JWUUSQ?
All W25Q16JWUUSQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16JWUUSQ, 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 W25Q16JWUUSQ part is unused and in its original packaging.
Return procedure for W25Q16JWUUSQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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