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Winbond Electronics Corporation W25Q16JWXHAQ
- Part No.:
- W25Q16JWXHAQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
W25Q16JWXHAQ.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,879
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Product details
Overview
W25Q16JWXHAQ from Winbond is a 1.8V, 16M-bit serial flash memory IC supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz Quad I/O clock rate, 4KB uniform sector erase granularity, and hardware/software write protection. It delivers 66MB/s continuous read throughput and is used for code execution (XIP), firmware storage, and parameter retention in space-constrained industrial embedded systems.
For engineers reviewing the W25Q16JWXHAQ datasheet, W25Q16JWXHAQ pinout, W25Q16JWXHAQ application, or W25Q16JWXHAQ equivalent, key selection criteria include its 1.65–1.95V supply range, -40°C to +105°C industrial-plus temperature grade, JEDEC-compliant SFDP register, 64-bit unique ID, and support for Erase/Program Suspend & Resume functionality in resource-limited designs.
Technical Context
The W25Q16JWXHAQ implements a flexible SPI-compatible interface with three operational modes: Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3), where Quad mode requires non-volatile QE bit enablement in Status Register-2. Its memory array comprises 8192 × 256-byte pages organized into 512 erasable 4KB sectors and 32 erasable 64KB blocks.
It integrates volatile and non-volatile status/configuration registers-including Block Protect (BP2–BP0), Top/Bottom (TB), Sector Protect (SEC), Complement Protect (CMP), Security Register Locks (LB3–LB1), and Output Driver Strength (DRV1/DRV0)-enabling fine-grained, persistent memory protection and configurable I/O drive capability without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2 M-byte) organized as 8192 × 256-byte programmable pages |
| Supply Voltage | 1.65 V to 1.95 V - enables direct integration with 1.8V logic domains without level-shifting |
| Quad SPI Clock Rate | Up to 133 MHz - delivers 532 Mbps effective bandwidth (133 MHz × 4 lines) for fast XIP or boot loading |
| Erase Granularity | Uniform 4KB sectors, 32KB blocks, 64KB blocks - supports mixed-code-and-data partitioning with minimal wasted space |
| Data Retention | 20+ years - ensures long-term reliability for firmware and calibration data in unattended deployments |
| Endurance | 100,000 program-erase cycles per sector - suitable for field-upgradable firmware with frequent minor updates |
| Operating Temperature | -40°C to +105°C - qualified for industrial-plus environments including motor drives and outdoor gateways |
| Security Features | 64-bit unique ID, 3 × 256-byte security registers, OTP lock bits (LB3–LB1), SFDP register - enables device authentication and secure boot key storage |
Pinout & Package
W25Q16JWXHAQ is packaged in an 8-pad XSON 2×3×0.4 mm (Package Code XH), offering ultra-compact footprint and thermal performance for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable signal; places DO/IO pins in high-impedance state when deasserted to isolate bus contention |
| DO (IO1) | Serial Data Output / Bidirectional I/O1 | Provides read data in Standard/Dual SPI; functions as IO1 in Dual/Quad modes - supports full-duplex timing |
| /WP (IO2) | Write Protect Input / Bidirectional I/O2 | Hardware write lock for status register when QE=0; becomes IO2 in Quad mode (QE=1) for expanded I/O bandwidth |
| GND | Ground Reference | Primary return path for all digital and I/O circuits; must be low-inductance connection to minimize noise coupling |
| DI (IO0) | Serial Data Input / Bidirectional I/O0 | Accepts instructions/addresses in Standard SPI; serves as IO0 in Dual/Quad modes - shared input/output path |
| CLK | Serial Clock Input | Synchronizes all SPI transfers; supports Mode 0 and Mode 3; timing-critical for setup/hold compliance at 133MHz |
| /HOLD (IO3) | Hold Input / Bidirectional I/O3 | Pauses ongoing SPI transaction when asserted low; repurposed as IO3 in Quad mode (QE=1) to complete 4-line interface |
| VCC | Power Supply | 1.65–1.95V core supply; requires local 100nF ceramic decoupling adjacent to pin to suppress switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad SPI Interface | Enables scalable bandwidth: 2× (Dual) or 4× (Quad) data rate vs. Standard SPI - reduces boot time and firmware update latency |
| Erase/Program Suspend & Resume | Allows interruption of long erase/program operations to service higher-priority reads - critical for real-time response in control systems |
| Individual Block/Sector Lock | Per-sector (4KB) and per-block (64KB) lock bits stored in non-volatile memory - enables immutable bootloader partitioning without external supervision |
| Volatile & Non-Volatile Status Bits | Configurable protection (BP/TB/SEC/CMP), Quad Enable (QE), and driver strength (DRV1/DRV0) persist across power cycles or remain session-only as needed |
| JEDEC SFDP & Unique ID | Standardized flash parameter discovery (SFDP) simplifies driver portability; 64-bit unique ID enables device-specific key binding in secure boot flows |
| Industrial-Plus Temperature Range | Rated for -40°C to +105°C operation - validated for extended life in enclosed enclosures with passive cooling and no active thermal management |
Applications
| Firmware Storage in Edge Gateways | Secure Bootloader Partitioning |
|---|---|
|
Use Scenario: Storing signed firmware images and configuration profiles in industrial IoT gateways deployed outdoors with wide ambient temperature swings. IC Role / Device Role / Timing Role: Non-volatile code and data storage with XIP-capable Quad SPI interface enabling direct execution of boot code without RAM copy. Use Value: 133MHz Quad I/O read speed reduces boot latency by >70% vs. standard SPI; 105°C rating ensures reliability in sun-exposed enclosures. |
Use Scenario: Isolating immutable bootloader code from upgradable application firmware in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Memory partition manager using Individual Block Lock bits to permanently protect top 64KB sector containing bootloader. Use Value: Hardware-enforced write protection prevents accidental or malicious corruption - eliminates need for software-based integrity checks during reset. |
| Parameter & Calibration Data Logging | Real-Time Control Firmware Caching |
|
Use Scenario: Recording sensor calibration coefficients and system tuning parameters in medical diagnostic equipment requiring long-term data integrity. IC Role / Device Role / Timing Role: High-reliability parameter store leveraging 20-year data retention and 100K endurance cycles for infrequent but critical writes. Use Value: 4KB uniform sector erase allows precise overwriting of calibration blocks without disturbing adjacent firmware or lookup tables. |
Use Scenario: Caching motion control algorithms in servo drives where deterministic interrupt response is required during runtime. IC Role / Device Role / Timing Role: Low-latency instruction cache accessed via Fast Read Quad I/O (EBh) with Erase/Program Suspend enabling concurrent background updates. Use Value: Suspend/resume capability permits firmware patching without halting real-time control loops - maintains <10µs jitter tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L1633FZUI-10G | 1.8V, 16M-bit, supports only Standard/Dual SPI (no Quad I/O); max clock 80MHz; lacks SFDP and unique ID | Lower bandwidth requirement; no secure boot or parameter discovery needs | Choose when cost sensitivity outweighs Quad SPI speed and security features |
| S25FL116KAGMFI010 | 1.8V, 16M-bit, Quad SPI capable (104MHz), includes SFDP but no unique ID; 20-year retention, -40°C to +85°C only | Requires full temperature coverage; no device-level identity needed | Prefer when industrial-grade temp range is not mandatory and unique ID is unnecessary |
Compared with MX25L1633FZUI-10G and S25FL116KAGMFI010, W25Q16JWXHAQ uniquely combines 133MHz Quad I/O, -40°C to +105°C operation, 64-bit unique ID, and individual sector locking - making it the only option among the three qualified for secure, high-speed, extended-temperature firmware storage in mission-critical edge devices.
Availability
W25Q16JWXHAQ is available at Aetrix Electronics and suitable for industrial automation controllers, medical diagnostics platforms, and outdoor wireless infrastructure requiring stable component supply, long lifecycle assurance, and guaranteed traceable sourcing.
Supply support for W25Q16JWXHAQ 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 manufacturer specializing in specialty memory solutions, including NOR/NAND flash, SRAM, and mobile DRAM, serving industrial, automotive, and communications markets since 1987.
The W25Q16JWXHAQ belongs to Winbond's W25Q "JW" series - designed specifically for industrial-plus applications demanding extended temperature operation, enhanced security, and high-speed Quad SPI performance in compact packages.
FAQ
What is the operating voltage range for W25Q16JWXHAQ?
The W25Q16JWXHAQ operates from 1.65 V to 1.95 V. This narrow 1.8V nominal range ensures compatibility with modern low-power microcontrollers and FPGAs without requiring external level shifters. Operation outside this window may cause undefined behavior or failure to execute commands, and the device enters reset state if VCC drops below VWI threshold during power-up or power-down sequences.
Does W25Q16JWXHAQ support Quad SPI mode out of the box?
No - W25Q16JWXHAQ requires the Quad Enable (QE) bit in Status Register-2 to be set to '1' before Quad SPI instructions (e.g., Fast Read Quad I/O EBh) become functional. By default, QE=0 after power-up, so Standard or Dual SPI must be used first to issue Write Status Register-2 (31h) with QE=1. Once enabled, IO2 (/WP) and IO3 (/HOLD) become active bidirectional data lines.
How does the Individual Block Lock feature work in W25Q16JWXHAQ?
In W25Q16JWXHAQ, each 64KB block (62 total) and each 4KB sector in top/bottom blocks (32 total) has a dedicated non-volatile lock bit. When locked (bit = 1), erase and program commands to that region are ignored. All lock bits power up as '1', so the entire array is write-protected until explicitly unlocked via Individual Block Unlock (39h) instruction - a key safeguard for bootloader integrity.
What is the purpose of the /HOLD pin on W25Q16JWXHAQ?
The /HOLD pin on W25Q16JWXHAQ pauses an ongoing SPI transaction while /CS remains low, placing DO in high-impedance and ignoring DI/CLK transitions. This allows multi-device sharing of the same SPI bus without arbitration logic. In Quad SPI mode (QE=1), /HOLD is repurposed as IO3 - so /HOLD functionality is unavailable when Quad I/O is active.
Can W25Q16JWXHAQ be used in applications requiring secure firmware authentication?
Yes - W25Q16JWXHAQ supports secure firmware authentication through its 64-bit unique serial number (read via 4Bh instruction) and three 256-byte security registers (read via 48h). These registers can store cryptographic keys or hashes, and their OTP lock bits (LB3–LB1) prevent reprogramming once set - enabling tamper-resistant secure boot implementations when paired with a trusted host controller.
W25Q16JWXHAQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-XFDFN 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XSON (2x3)
W25Q16JWXHAQ FAQ
1.How can I place an order for W25Q16JWXHAQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16JWXHAQ 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 W25Q16JWXHAQ reliable?
The price and inventory of W25Q16JWXHAQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16JWXHAQ is usually 5 days.
3.What payment methods are accepted for W25Q16JWXHAQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16JWXHAQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16JWXHAQ?
W25Q16JWXHAQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16JWXHAQ 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 W25Q16JWXHAQ?
For technical support, including W25Q16JWXHAQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16JWXHAQ requirements.
6.How does Aetrix verify that W25Q16JWXHAQ is sourced from the original manufacturer or authorized distributors?
All W25Q16JWXHAQ 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 W25Q16JWXHAQ meets industry standards.
7.What is the process for return or replacement of W25Q16JWXHAQ?
All W25Q16JWXHAQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16JWXHAQ, 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 W25Q16JWXHAQ part is unused and in its original packaging.
Return procedure for W25Q16JWXHAQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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