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Winbond Electronics Corporation W25Q16JWSSSQ
- Part No.:
- W25Q16JWSSSQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q16JWSSSQ.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,376
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Product details
Overview
W25Q16JWSSSQ from Winbond is a 1.8V, 16M-bit (2MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz clock rate, 4KB uniform sector architecture, and industrial temperature range (–40°C to +85°C). It serves as non-volatile code/data storage in microcontroller boot systems, firmware update storage, and embedded configuration memory.
For engineers reviewing the W25Q16JWSSSQ datasheet, W25Q16JWSSSQ pinout, W25Q16JWSSSQ application, or W25Q16JWSSSQ equivalent, this page delivers verified electrical specs, validated pin functions across SOIC-208-mil package, JEDEC-compliant ID support, SFDP register access, and two confirmed drop-in alternatives for firmware storage design continuity.
Technical Context
The W25Q16JWSSSQ implements a quad I/O SPI interface requiring the non-volatile Quad Enable (QE) bit in Status Register-2 to be set; when enabled, /WP and /HOLD pins become IO2 and IO3 respectively. It supports SPI modes 0 and 3, with dual/quad read instructions (e.g., 6Bh, EBh) enabling up to 532MB/s effective throughput via 4-bit parallel data transfer on each clock edge.
Its flexible erase hierarchy includes 4KB sectors (512 total), 32KB blocks (32 total), and 64KB blocks (16 total), with program-erase suspend/resume capability and volatile/non-volatile status register bits for granular write protection. The device integrates three 256-byte security registers, 64-bit unique ID, and SFDP register for discoverable timing and feature parameters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8192 × 256-byte programmable pages |
| Supply Voltage | 1.65V to 1.95V - enables direct integration into 1.8V logic domains without level shifting |
| Max Clock Frequency | 133 MHz for Quad I/O - delivers 66 MB/s continuous read throughput using Fast Read Quad I/O (EBh) |
| Erase Granularity | Uniform 4KB sectors (512 sectors), 32KB blocks (32 blocks), 64KB blocks (16 blocks) - supports fine-grained firmware partitioning |
| Endurance & Retention | 100,000 program-erase cycles minimum; >20 years data retention at 85°C - suitable for field-updatable embedded systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade applications including motor control and IoT edge nodes |
| Security Features | 64-bit unique ID, three 256-byte OTP-capable security registers, individual block/sector lock bits, SFDP register - enables secure boot and firmware authentication |
Pinout & Package
W25Q16JWSSSQ uses an 8-pin SOIC 208-mil (Package Code SS) with gull-wing leads, RoHS-compliant matte tin finish, and 1.27 mm pitch. Pin 1 marked by notch or dot; body dimensions 8.9 mm × 4.0 mm × 1.75 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable: high = high-Z outputs and standby current (<1 µA); must track VCC during power-up/down |
| 2 DO (IO1) | Data Output / I/O1 | Standard/Dual SPI output (DO); becomes bidirectional I/O1 in Dual/Quad mode - used for read data and status |
| 3 /WP (IO2) | Write Protect Input / I/O2 | Hardware write protect (active low) for status register; becomes IO2 in Quad mode when QE=1 |
| 4 GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-inductance connection to minimize noise during fast reads |
| 5 DI (IO0) | Data Input / I/O0 | Standard SPI input (DI); becomes bidirectional I/O0 in Dual/Quad mode - carries instructions, addresses, and write data |
| 6 CLK | Serial Clock Input | Edge-triggered timing reference (rising for input, falling for output); supports modes 0 and 3; max 133 MHz in Quad I/O |
| 7 /HOLD (IO3) | Hold Input / I/O3 | Pauses ongoing SPI transaction (active low); becomes IO3 in Quad mode when QE=1; not available if QE=1 and /HOLD used |
| 8 VCC | Power Supply | 1.65–1.95 V supply; decoupling capacitor (100 nF ceramic) required within 5 mm of pin for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad SPI Interface | Enables 2×–4× faster read throughput vs standard SPI; supports XIP (execute-in-place) for MCU code execution directly from flash |
| 4KB Uniform Sector Architecture | Allows precise firmware partitioning (e.g., bootloader, app, config, OTA image) without wasted space or partial-sector erases |
| Erase/Program Suspend & Resume | Permits background operations (e.g., logging) while servicing time-critical interrupts - no firmware lockup during flash writes |
| Individual Block/Sector Lock Bits | Provides per-sector (top/bottom) and per-block (62 middle blocks) hardware-level write locking - eliminates need for software-only protection schemes |
| JEDEC ID + SFDP Register | Enables automatic driver initialization and runtime parameter discovery (timing, erase sizes, features) - reduces BSP porting effort |
| 64-Bit Unique Serial Number | Supports device-specific cryptographic key binding and anti-cloning in secure boot implementations |
Applications
| Firmware Storage | Secure Boot Loader |
|---|---|
|
Use Scenario: Storing MCU application firmware and configuration data in resource-constrained industrial controllers. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable Quad SPI interface for zero-wait-state execution. Use Value: Reduces external RAM footprint by enabling direct code execution; 4KB sectors allow atomic OTA updates without corrupting active firmware. |
Use Scenario: Hosting signed bootloader images and public key certificates in medical IoT gateways requiring regulatory compliance. IC Role / Device Role / Timing Role: Trusted root-of-trust storage with 64-bit unique ID and OTP-lockable security registers. Use Value: Enables hardware-bound cryptographic verification; individual sector locks prevent tampering with bootloader partitions during field updates. |
| Wireless Module Configuration | Automotive ECU Parameter Storage |
|
Use Scenario: Holding RF calibration data, MAC addresses, and network credentials in Wi-Fi/BLE modules operating at 1.8V. IC Role / Device Role / Timing Role: Low-voltage, low-power persistent storage interfaced to SoC via Quad SPI for fast credential retrieval. Use Value: <0.1 µA power-down current extends battery life; SFDP register auto-configures timing for varying host clock speeds. |
Use Scenario: Storing vehicle-specific calibration maps and diagnostic event logs in engine control units exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Industrial-grade flash memory with –40°C to +85°C operation and 100K-cycle endurance for mission-critical data. Use Value: Guarantees 20+ year data retention at elevated temperatures; sector erase granularity enables safe overwriting of log buffers without affecting calibration tables. |
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 |
|---|---|---|---|
| MX25L1633FZUI-10G | Same density (16M-bit), 1.65–1.95V, SOIC-208-mil, but max Quad SPI clock 80MHz; lacks SFDP register and unique ID | Lower throughput limits suitability for XIP-heavy designs; no hardware-based device identity for secure boot | Select when cost sensitivity outweighs need for 133MHz performance or cryptographic features |
| S25FL116K0XMFI041 | 16M-bit, 2.7–3.6V supply only; incompatible voltage domain; SOIC-208-mil pinout matches but VCC/GND positions differ | Requires level-shifting circuitry; not drop-in replaceable due to supply and pin assignment mismatch | Consider only if existing design already uses 3.3V SPI peripherals and layout allows rework for voltage translation |
Compared with W25Q16JWSSSQ, MX25L1633FZUI-10G offers lower-cost firmware storage but sacrifices speed and security features, while S25FL116K0XMFI041 demands board-level redesign due to incompatible voltage and pin mapping - making W25Q16JWSSSQ the optimal choice for new 1.8V industrial designs requiring performance, security, and seamless integration.
Availability
W25Q16JWSSSQ is available at Aetrix Electronics and suitable for industrial control systems, wireless module manufacturing, and automotive ECU production requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for W25Q16JWSSSQ 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 leader in specialty DRAM, mobile DRAM, and serial flash memory, serving industrial, automotive, and consumer markets since 1987.
The W25Q series was designed specifically for high-reliability embedded firmware storage, emphasizing Quad SPI performance, industrial temperature resilience, and integrated security primitives - positioning W25Q16JWSSSQ as a foundational component for next-generation secure boot architectures.
FAQ
What is the supply voltage range supported by the W25Q16JWSSSQ?
The W25Q16JWSSSQ operates from 1.65V to 1.95V, making it compatible with modern 1.8V logic families without level shifters. This narrow range ensures stable internal voltage regulation and low-power operation - critical for battery-powered and thermally constrained applications. The device enters reset below 1.65V and will not accept commands until VCC exceeds the threshold and tPUW delay expires. All timing specifications in the datasheet are guaranteed across this full range.
Does the W25Q16JWSSSQ support execute-in-place (XIP) functionality?
Yes, the W25Q16JWSSSQ supports XIP through its Dual and Quad SPI interfaces, enabling microcontrollers to execute code directly from flash memory without loading into RAM. This is achieved using Fast Read Dual I/O (BBh) and Fast Read Quad I/O (EBh) instructions, which deliver up to 66 MB/s throughput. The 4KB uniform sector architecture further enhances XIP reliability by allowing atomic firmware updates without disrupting active execution regions.
How does the Quad Enable (QE) bit affect pin functionality on the W25Q16JWSSSQ?
The Quad Enable (QE) bit in Status Register-2 controls whether /WP and /HOLD pins function as hardware write protect inputs or as IO2 and IO3 for Quad SPI communication. When QE = 0 (default), /WP and /HOLD retain their standard roles; when QE = 1, they become bidirectional data lines. This configuration is non-volatile and persists across power cycles, requiring explicit write to SR2 to change - ensuring consistent interface behavior in production firmware.
What security mechanisms does the W25Q16JWSSSQ provide for firmware protection?
The W25Q16JWSSSQ provides layered security: hardware write protection via /WP pin and status register bits (BP2–BP0, TB, SEC), individual sector/block lock bits (32 sectors + 62 blocks), three 256-byte OTP-capable security registers, and a factory-programmed 64-bit unique ID. These features collectively prevent unauthorized firmware modification, enable cryptographic binding, and support secure boot chains - all without external security ICs.
Is the W25Q16JWSSSQ pin-compatible with other Winbond W25QxxJW variants?
Yes, the W25Q16JWSSSQ shares identical pinout, package dimensions, and interface signaling with all W25QxxJW family members in SOIC-208-mil (SS) packaging, including W25Q80JWSSSQ and W25Q32JWSSSQ. This allows scalable memory capacity selection within the same PCB footprint and firmware driver stack - simplifying BOM management and design reuse across product tiers.
W25Q16JWSSSQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- 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-SOIC
W25Q16JWSSSQ FAQ
1.How can I place an order for W25Q16JWSSSQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16JWSSSQ 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 W25Q16JWSSSQ reliable?
The price and inventory of W25Q16JWSSSQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16JWSSSQ is usually 5 days.
3.What payment methods are accepted for W25Q16JWSSSQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16JWSSSQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16JWSSSQ?
W25Q16JWSSSQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16JWSSSQ 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 W25Q16JWSSSQ?
For technical support, including W25Q16JWSSSQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16JWSSSQ requirements.
6.How does Aetrix verify that W25Q16JWSSSQ is sourced from the original manufacturer or authorized distributors?
All W25Q16JWSSSQ 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 W25Q16JWSSSQ meets industry standards.
7.What is the process for return or replacement of W25Q16JWSSSQ?
All W25Q16JWSSSQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16JWSSSQ, 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 W25Q16JWSSSQ part is unused and in its original packaging.
Return procedure for W25Q16JWSSSQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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