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Winbond Electronics Corporation W25Q16JLSNIG
- Part No.:
- W25Q16JLSNIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
W25Q16JLSNIG.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:976
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Product details
Overview
W25Q16JLSNIG from Winbond is a 16 M-bit (2 MB) Serial Flash memory IC supporting Standard, Dual, and Quad SPI interfaces with up to 104 MHz clock frequency, 4 KB uniform sector erase granularity, and 2.3–3.6 V single-supply operation - deployed in code shadowing, XIP execution, and firmware storage for microcontroller-based embedded systems.
For engineers reviewing the W25Q16JLSNIG datasheet, W25Q16JLSNIG pinout, W25Q16JLSNIG application, or W25Q16JLSNIG equivalent, key selection considerations include Quad SPI enable (QE bit), /HOLD vs /RESET pin configuration, 4KB sector flexibility, JEDEC ID and SFDP register support, and hardware write protection via /WP pin.
Technical Context
The W25Q16JLSNIG implements a SPI-compatible serial interface with Mode 0 and Mode 3 clock polarity support, enabling interoperability with standard MCU SPI peripherals. Its architecture includes three status registers (SR-1/2/3) with non-volatile bits for Quad Enable (QE), HOLD/RST function selection, and output driver strength control.
It supports full instruction-level compatibility with JEDEC-standard SPI commands including Fast Read Quad I/O (EBh), Erase/Program Suspend (75h), and 64-bit Unique ID read (4Bh). The device uses a 8,192 × 256-byte page array, with erasable units of 4 KB (sector), 32 KB (block), 64 KB (block), and full chip - all accessible via dedicated opcodes without address decoding overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8,192 pages × 256 bytes - enables compact firmware storage with fine-grained update capability. |
| Interface Support | Standard SPI (DI/DO), Dual SPI (IO0/IO1), Quad SPI (IO0–IO3) - selectable via QE bit; allows bandwidth scaling from ~30 MB/s to 50 MB/s continuous transfer. |
| Erase Granularity | Uniform 4 KB sectors (512 total), plus 32 KB and 64 KB blocks - supports parameter logging, OTA patching, and secure boot partitioning. |
| Operating Voltage | 2.3 V to 3.6 V single supply - compatible with 3.3 V logic domains and low-power MCU platforms without level-shifting. |
| Endurance & Retention | 100,000 program/erase cycles per sector; >20 years data retention - suitable for field-upgradable industrial firmware. |
| Timing Performance | 104 MHz max SPI clock; tPUW = 10 ms power-up write disable delay; tRST = 30 µs software reset - ensures robust initialization under voltage ramp conditions. |
| Security Features | 64-bit unique ID, SFDP register, 3×256-byte OTP-lockable security registers, and volatile/non-volatile status register protection - enables device authentication and secure key storage. |
Pinout & Package
W25Q16JLSNIG is packaged in 8-pin SOIC 150-mil (SN package code), with gull-wing leads, 1.27 mm pitch, and RoHS-compliant matte tin finish. Pin 1 marked by notch or dot; pin 4 = GND, pin 5 = VCC, pin 8 = CLK.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select Input | Active-low enable signal; places DO/IO pins in high-impedance state when deasserted - essential for multi-device SPI bus sharing. |
| DO / IO1 (Pin 2) | Data Output / Bidirectional I/O 1 | Unidirectional output in Standard SPI; bidirectional in Dual/Quad modes - carries read data or address during instruction phases. |
| /WP / IO2 (Pin 3) | Write Protect Input / Bidirectional I/O 2 | Hardware lock for status register writes when QE=0; repurposed as IO2 in Quad mode - requires external pull-up if unused. |
| GND (Pin 4) | Ground Reference | Primary return path for VCC and I/O signals; must be low-inductance connection to minimize noise coupling into SPI timing. |
| DI / IO0 (Pin 5) | Data Input / Bidirectional I/O 0 | Unidirectional input in Standard SPI; bidirectional in Dual/Quad modes - carries instructions, addresses, and program data on rising CLK edge. |
| CLK (Pin 6) | Serial Clock Input | Synchronous timing reference for all SPI transfers; supports Mode 0 and Mode 3; max 104 MHz - defines maximum throughput ceiling. |
| /HOLD or /RESET (Pin 7) | Hold or Reset Input | Pauses active SPI transaction when low (HOLD); resets internal state when pulsed low (RESET) - configurable via HOLD/RST bit in SR-3. |
| VCC (Pin 8) | Power Supply | 2.3–3.6 V core and I/O supply; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin - critical for stable erase/write margins. |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI with QE bit | Enables 4-line data transfer (IO0–IO3) after non-volatile Status Register-2 bit QE=1 - doubles effective bandwidth over Dual SPI without changing clock rate. |
| Erase/Program Suspend | Halts ongoing sector erase or page program via 75h command - allows time-critical interrupt service without data corruption or timeout failure. |
| 4 KB uniform sector architecture | 512 individually erasable sectors - permits independent firmware image, config, and log partitions with no wasted space or forced bulk erases. |
| JEDEC ID + SFDP register | Returns standardized manufacturer/device ID (9Fh) and discoverable parameter table (5Ah) - enables automatic driver initialization and runtime configuration detection. |
| 64-bit unique serial number | Factory-programmed immutable identifier readable via 4Bh command - supports device binding, license enforcement, and secure provisioning workflows. |
| Volatile/non-volatile status bits | Configurable settings (e.g., DRV0/DRV1, HOLD/RST) persist across power cycles unless explicitly written - reduces boot-time reconfiguration overhead. |
Applications
| Firmware Storage | Code Execution (XIP) |
|---|---|
Use Scenario: Storing bootloader, application firmware, and calibration tables in resource-constrained IoT edge nodes. IC Role / Device Role / Timing Role: Non-volatile code and data repository accessed via SPI during boot and runtime updates. Use Value: 4 KB sector erase enables atomic firmware patching without disrupting active system operation or requiring external RAM buffering. |
Use Scenario: Running application code directly from flash on Cortex-M microcontrollers with QSPI peripheral support. IC Role / Device Role / Timing Role: Memory-mapped instruction source with deterministic Quad SPI latency and prefetch capability. Use Value: 104 MHz Quad SPI clock yields ~416 Mbps effective bandwidth - sufficient for real-time audio processing and GUI rendering without local RAM copy. |
| Secure Boot Configuration | Industrial Parameter Logging |
Use Scenario: Storing cryptographic keys, root-of-trust certificates, and boot policy flags in tamper-resistant storage. IC Role / Device Role / Timing Role: Trusted configuration vault with OTP-locked security registers and hardware write protection. Use Value: 3×256-byte security registers with one-time programmable locks prevent runtime modification of critical boot parameters. |
Use Scenario: Recording sensor calibration offsets, maintenance timestamps, and fault history in factory automation controllers. IC Role / Device Role / Timing Role: Field-updatable parameter archive with wear-leveling-friendly 4 KB sector boundaries. Use Value: 100K P/E cycles per sector and >20-year retention ensure reliable decade-long logging in unattended equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L1606E SNIG | Same density (16 M-bit), 2.7–3.6 V supply range; lacks Quad SPI support and SFDP register; only Standard/Dual SPI. | Lower bandwidth requirement; no XIP or high-speed streaming needed; legacy design continuity. | Select when Quad SPI and JEDEC ID discovery are unnecessary and cost sensitivity outweighs future-proofing. |
| AT25SF161-SSHD-B | 16 M-bit, 2.5–3.6 V, supports Quad SPI and SFDP; includes hardware reset pin (dedicated /RESET), unlike W25Q16JLSNIG's shared /HOLD or /RESET pin. | Systems requiring guaranteed hardware reset independence from SPI bus state or QE configuration. | Prefer when deterministic reset behavior is mandatory and board layout accommodates separate /RESET routing. |
Compared with MX25L1606E SNIG and AT25SF161-SSHD-B, W25Q16JLSNIG offers broader instruction set coverage (e.g., Erase/Program Suspend), finer 4 KB sector granularity, and integrated /HOLD functionality - making it optimal for interrupt-driven firmware updates and mixed-mode SPI bus sharing.
Availability
W25Q16JLSNIG is available at Aetrix Electronics and suitable for firmware storage, code execution (XIP), secure boot configuration, and industrial parameter logging requiring stable component supply across production lifecycles.
Supply support for W25Q16JLSNIG 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 NOR/NAND Flash, SRAM, and mobile DRAM - serving automotive, industrial, and consumer markets since 1987.
The W25Q series targets high-reliability embedded systems needing fast, flexible, and secure serial flash - designed specifically for code shadowing, XIP, and firmware update resilience in space-constrained designs.
FAQ
What is the pin configuration for W25Q16JLSNIG?
W25Q16JLSNIG uses an 8-pin SOIC 150-mil package with /CS (Pin 1), DO/IO1 (Pin 2), /WP/IO2 (Pin 3), GND (Pin 4), DI/IO0 (Pin 5), CLK (Pin 6), /HOLD or /RESET (Pin 7), and VCC (Pin 8). Pin functions change based on Quad Enable (QE) and HOLD/RST bit settings - for example, /WP and /HOLD become IO2 and IO3 in Quad SPI mode. Always verify pin mapping against the current status register configuration before PCB layout.
Does W25Q16JLSNIG support Quad SPI operation?
Yes, W25Q16JLSNIG supports Quad SPI via Fast Read Quad I/O (EBh) and Quad Input Page Program (32h) instructions, but only after setting the non-volatile Quad Enable (QE) bit in Status Register-2. When QE=1, Pins 3 (/WP) and 7 (/HOLD) become IO2 and IO3 respectively. This enables 4-line data transfer at up to 104 MHz clock rate, delivering ~416 Mbps effective bandwidth - confirmed in Section 5.1.3 of the official datasheet.
How is hardware write protection implemented on W25Q16JLSNIG?
W25Q16JLSNIG provides hardware write protection through the /WP pin (Pin 3), which - when held low - prevents writes to the status register regardless of Write Enable state. This works alongside software-controlled block/sector protection bits (BP2–BP0, TB, SEC) and Status Register Protect (SRP/SRL) bits. Note that /WP functionality is disabled when QE=1, as Pin 3 becomes IO2 in Quad SPI mode - so hardware protection is only available in Standard or Dual SPI configurations.
What is the endurance rating and data retention of W25Q16JLSNIG?
W25Q16JLSNIG guarantees a minimum of 100,000 program/erase cycles per 4 KB sector and greater than 20 years of data retention at +25°C - both specified under standard operating conditions (2.3–3.6 V, –40°C to +85°C). These values are measured and validated per JEDEC standards and apply to each individual sector, enabling long-term reliability in field-deployed firmware and configuration storage applications.
Can W25Q16JLSNIG be used for secure boot applications?
Yes, W25Q16JLSNIG supports secure boot via multiple features: a factory-programmed 64-bit unique ID (readable via 4Bh), three 256-byte security registers with OTP locking capability, JEDEC ID and SFDP register for authenticated driver initialization, and hardware/software write protection to safeguard boot images. These capabilities - documented in Sections 2.4 and 6.1.9–6.1.10 - make W25Q16JLSNIG suitable for root-of-trust implementations where firmware integrity and device identity are critical.
W25Q16JLSNIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q16JLSNIG FAQ
1.How can I place an order for W25Q16JLSNIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16JLSNIG 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 W25Q16JLSNIG reliable?
The price and inventory of W25Q16JLSNIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16JLSNIG is usually 5 days.
3.What payment methods are accepted for W25Q16JLSNIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16JLSNIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16JLSNIG?
W25Q16JLSNIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16JLSNIG 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 W25Q16JLSNIG?
For technical support, including W25Q16JLSNIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16JLSNIG requirements.
6.How does Aetrix verify that W25Q16JLSNIG is sourced from the original manufacturer or authorized distributors?
All W25Q16JLSNIG 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 W25Q16JLSNIG meets industry standards.
7.What is the process for return or replacement of W25Q16JLSNIG?
All W25Q16JLSNIG units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16JLSNIG, 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 W25Q16JLSNIG part is unused and in its original packaging.
Return procedure for W25Q16JLSNIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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