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Winbond Electronics Corporation W25Q16CLSSIG TR
- Part No.:
- W25Q16CLSSIG TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q16CLSSIG TR.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,773
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Product details
Overview
W25Q16CLSSIG TR from Winbond is a 16M-bit (2MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 50MHz clock rate, 4KB uniform sector architecture, and XIP-capable continuous read mode for embedded code storage and execution. It operates from 2.3V to 3.6V, draws 4mA active current and <1µA in power-down, and is rated for -40°C to +85°C industrial temperature range.
For engineers reviewing the W25Q16CLSSIG TR datasheet, W25Q16CLSSIG TR pinout, W25Q16CLSSIG TR application, or W25Q16CLSSIG TR equivalent, key selection considerations include Quad Enable (QE) bit configuration, /WP and /HOLD pin reassignment in Quad I/O mode, 4KB sector erase granularity, JEDEC ID and SFDP register support, and hardware write protection compatibility with microcontroller SPI peripherals.
Technical Context
The W25Q16CLSSIG TR implements a SPI command-set compatible with Mode 0 and Mode 3, supports up to 200MHz equivalent data throughput via Quad I/O Fast Read (EBh), and features dual status registers with non-volatile Quad Enable (QE) bit in Status Register-2 required for Quad SPI operation. Its architecture includes 8,192 × 256-byte programmable pages, 512 erasable 4KB sectors, and 32 erasable 64KB blocks.
It integrates Erase/Program Suspend & Resume functionality, 64-bit unique serial number, three 256-byte security registers with OTP locks, and SFDP (Serial Flash Discoverable Parameters) register for runtime configuration discovery. Write protection combines volatile/non-volatile status bits (SRP0/SRP1, BP2–BP0), hardware /WP pin control (disabled in Quad mode), and power-down lock-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8,192 × 256-byte pages |
| SPI Interface Modes | Standard (DI/DO), Dual (IO0/IO1), Quad (IO0–IO3); QE bit must be set for Quad I/O |
| Max Clock Frequency | 50 MHz; enables 100 MHz (Dual) or 200 MHz (Quad) effective throughput |
| Erase Granularity | Uniform 4KB sectors (512 total), 32KB blocks (64 total), 64KB blocks (32 total), full chip |
| Write Endurance | 100,000 program/erase cycles per sector, 20-year data retention |
| Supply Voltage | 2.3 V to 3.6 V; supports single-rail operation in mixed-voltage MCU systems |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded applications |
| Power Consumption | 4 mA active (typ.), <1 µA power-down (typ.); enables low-power boot and standby modes |
Pinout & Package
W25Q16CLSSIG TR is packaged in an 8-pin SOIC 208-mil (package code SS), with gull-wing leads and standard surface-mount footprint. Pin functions are identical across SOIC, VSOP, and WSON variants per Winbond's pin assignment specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select | Active-low enable; device enters high-impedance output state when high; must transition high→low before new instruction accepted |
| DO (IO1) | Serial Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; becomes IO1 in Dual/Quad mode; used for status/data reads on CLK falling edge |
| /WP (IO2) | Write Protect / Bidirectional I/O | Hardware write protect for status register when QE=0; becomes IO2 in Quad mode (QE=1); active-low |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance PCB connection |
| VCC | Power Supply | 2.3–3.6 V supply input; must meet tVSL timing relative to /CS during power-up/down |
| /HOLD (IO3) | Hold Control / Bidirectional I/O | Pauses ongoing SPI operation when active-low (QE=0); becomes IO3 in Quad mode (QE=1) |
| CLK | Serial Clock Input | Timing reference for all SPI transfers; supports Mode 0 and Mode 3; rising edge for input, falling edge for output |
| DI (IO0) | Serial Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; becomes IO0 in Dual/Quad mode; accepts instructions/addresses/data on CLK rising edge |
Key Features
| Feature | Design Value |
|---|---|
| Continuous Read Mode | As few as 8 clocks overhead to initiate read; enables true XIP (execute-in-place) without external RAM buffering |
| Quad SPI Support | Requires QE bit set in Status Register-2; repurposes /WP and /HOLD as IO2/IO3 - mandates firmware-aware pin mapping |
| Flexible Protection Scheme | Combines hardware /WP pin, software-configurable BP bits, SRP lock, and power-down lock-down for layered data integrity |
| JEDEC & SFDP Compliance | Supports standardized manufacturer/device ID (9Fh), 64-bit unique serial number (4Bh), and discoverable parameters (5Ah) for automated BOM validation |
| Security Registers | Three 256-byte OTP-lockable security registers for keys, calibration data, or firmware signatures - protected by LB1–LB3 bits |
| Erase/Program Suspend | 75h/7Ah instructions allow pausing long operations (e.g., 64KB block erase) to service time-critical interrupts without data loss |
Applications
| Boot Code Storage | Firmware Over-the-Air Update |
|---|---|
Use Scenario: Storing primary bootloader and application firmware for ARM Cortex-M or RISC-V microcontrollers at power-on. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP capability; serves as direct execution source via Quad SPI interface. Use Value: Eliminates need for external RAM loading; reduces boot time by >40% vs. Standard SPI due to 200MHz equivalent throughput. | Use Scenario: Receiving encrypted firmware patches wirelessly and validating/storing them prior to safe activation. IC Role / Device Role / Timing Role: Secure, field-upgradable storage partition; leverages security registers for signature verification keys. Use Value: Enables atomic update rollback using 4KB sector granularity; prevents partial writes during power loss via suspend/resume. |
| Industrial HMI Configuration | Automotive Telematics Logging |
Use Scenario: Persisting UI layout settings, language packs, and calibration offsets in human-machine interface panels. IC Role / Device Role / Timing Role: Parameter and asset storage with hardware write protection to prevent accidental overwrite during operation. Use Value: /WP pin + BP bits ensure configuration remains immutable during runtime; 100,000-cycle endurance supports daily recalibration. | Use Scenario: Recording CAN bus diagnostic events, GPS coordinates, and sensor snapshots in vehicle telematics gateways. IC Role / Device Role / Timing Role: High-reliability event logging buffer with power-fail-safe write sequencing. Use Value: Power-down instruction and tPUW delay prevent corruption during brown-out; 20-year retention ensures log validity over vehicle lifetime. |
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 |
|---|---|---|---|
| MX25L1606EM2I-12G | Same density (16Mb), 3V supply, SOIC-8 package; supports Dual/Quad SPI but lacks SFDP register and 64-bit UID | No built-in parameter discovery; requires fixed initialization sequence; no unique device identification for fleet tracking | Prefer W25Q16CLSSIG TR when SFDP-driven configuration or device-level traceability is required |
| S25FL116K0XMFI041 | 16Mb, 2.7–3.6V, SOIC-8; includes configurable reset pin and deeper power-down mode (<100nA), but no Octal Word Read instruction | Better ultra-low-power sleep, but slower random access than W25Q16CLSSIG TR's E3h/E7h commands | Choose W25Q16CLSSIG TR for highest continuous read bandwidth; select S25FL116K for battery-powered logging with extended sleep |
Compared with MX25L1606EM2I-12G and S25FL116K0XMFI041, the W25Q16CLSSIG TR delivers superior XIP performance via Octal Word Read (E3h), mandatory SFDP compliance for future-proof driver portability, and integrated 64-bit UID for secure provisioning - making it optimal for connected, upgradable, and safety-conscious designs.
Availability
W25Q16CLSSIG TR is available at Aetrix Electronics and suitable for industrial HMI, automotive telematics, and IoT edge node applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across manufacturing lots.
Supply support for W25Q16CLSSIG TR 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 SPI NOR/NAND flash, RAM, and trusted computing components.
The W25Q series targets high-performance embedded systems needing reliable, low-power, and feature-rich serial flash - specifically engineered for code shadowing, XIP execution, and secure firmware storage in resource-constrained environments.
FAQ
What is the package type and lead count of the W25Q16CLSSIG TR?
The W25Q16CLSSIG TR uses an 8-pin SOIC 208-mil (package code SS) with gull-wing leads. This package is RoHS-compliant, surface-mountable, and shares pinout compatibility with Winbond's SN (150-mil SOIC), SV (150-mil VSOP), and ZP (6×5-mm WSON) variants - enabling footprint flexibility without redesign.
Does the W25Q16CLSSIG TR support Quad SPI mode out of the box?
No - the W25Q16CLSSIG TR requires the Quad Enable (QE) bit in Status Register-2 to be set via Write Status Register (01h) instruction before Quad SPI operation is enabled. Until QE=1, /WP and /HOLD remain dedicated hardware protection pins; setting QE repurposes them as IO2 and IO3, which must be reflected in firmware initialization.
How does the W25Q16CLSSIG TR handle power-loss during programming or erase?
The W25Q16CLSSIG TR incorporates automatic write disable after power-up (tPUW delay), voltage threshold reset (VWI), and Erase/Program Suspend (75h) to mitigate corruption. If power fails mid-operation, the device retains its pre-erase/program state; suspend/resume allows safe interruption and continuation once stable power resumes - critical for automotive and industrial use.
Can the W25Q16CLSSIG TR be used for secure key storage?
Yes - the W25Q16CLSSIG TR includes three 256-byte security registers with One-Time Programmable (OTP) lock bits (LB1–LB3). Once locked, these registers become read-only and immune to further writes, making them suitable for storing cryptographic keys, device certificates, or calibration secrets in tamper-resistant applications.
What is the significance of the SFDP register in the W25Q16CLSSIG TR?
The SFDP (Serial Flash Discoverable Parameters) register (accessed via 5Ah instruction) provides standardized, vendor-agnostic configuration metadata - including erase block sizes, timing parameters, and feature flags. This enables generic flash drivers to auto-configure for the W25Q16CLSSIG TR without hard-coded assumptions, improving firmware portability across NOR flash families.
W25Q16CLSSIG TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
- Clock Frequency:
- 50 MHz
- Write Cycle Time - Word, Page:
- 50µs, 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q16CLSSIG TR FAQ
1.How can I place an order for W25Q16CLSSIG TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16CLSSIG TR 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 W25Q16CLSSIG TR reliable?
The price and inventory of W25Q16CLSSIG TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16CLSSIG TR is usually 5 days.
3.What payment methods are accepted for W25Q16CLSSIG TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16CLSSIG TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16CLSSIG TR?
W25Q16CLSSIG TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16CLSSIG TR 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 W25Q16CLSSIG TR?
For technical support, including W25Q16CLSSIG TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16CLSSIG TR requirements.
6.How does Aetrix verify that W25Q16CLSSIG TR is sourced from the original manufacturer or authorized distributors?
All W25Q16CLSSIG TR 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 W25Q16CLSSIG TR meets industry standards.
7.What is the process for return or replacement of W25Q16CLSSIG TR?
All W25Q16CLSSIG TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16CLSSIG TR, 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 W25Q16CLSSIG TR part is unused and in its original packaging.
Return procedure for W25Q16CLSSIG TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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