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Winbond Electronics Corporation W25Q16CVSFIG
- Part No.:
- W25Q16CVSFIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
W25Q16CVSFIG.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,954
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Product details
Overview
W25Q16CVSFIG from Winbond is a 16 M-bit (2 MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 104 MHz clock capability, 4 KB uniform sector erase architecture, and hardware write protection via /WP and /HOLD pins - deployed in embedded boot code storage, firmware update partitions, and XIP-capable microcontroller systems.
For engineers reviewing the W25Q16CVSFIG datasheet, W25Q16CVSFIG pinout, W25Q16CVSFIG application, or W25Q16CVSFIG equivalent, key selection criteria include Quad SPI enable (QE bit), 2.7–3.6 V single-supply operation, 4 mA active current, -40°C to +85°C industrial temperature range, and SOIC-8 (208-mil) package compatibility with legacy PCB footprints.
Technical Context
The W25Q16CVSFIG implements a SPI command-set architecture with three operational modes: Standard SPI (DI/DO unidirectional), Dual SPI (IO0/IO1 bidirectional), and Quad SPI (IO0–IO3 bidirectional requiring QE=1). Its internal block diagram integrates a 256-byte page buffer, 512 × 4 KB erasable sectors, and status register logic governing erase/program suspend/resume, security register locks, and SFDP parameter discovery.
It supports JEDEC-standard manufacturer/device ID (90h/9Fh), 64-bit unique serial number (4Bh), and programmable protection via BP0–BP2, TB, SEC, CMP, SRP0/SRP1 bits - enabling fine-grained 4 KB sector locking, top/bottom array control, and volatile/non-volatile status register write 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 |
| Interface Support | Standard/Dual/Quad SPI with IO0–IO3; requires QE bit set for Quad mode |
| Max Clock Frequency | 104 MHz (Standard/Dual); enables 208 MB/s dual-output and 416 MB/s quad-output effective throughput |
| Erase Granularity | Uniform 4 KB sectors (512 total), 32 KB blocks (64 total), 64 KB blocks (32 total), full chip |
| Write Endurance | 100,000 program/erase cycles per sector, 20-year data retention at +25°C |
| Supply Voltage | 2.7 V to 3.6 V single supply; 4 mA typical active current, <1 µA power-down current |
| Operating Temp | -40°C to +85°C industrial grade; validated across full voltage and temperature range |
Pinout & Package
W25Q16CVSFIG is packaged in an 8-pin SOIC 208-mil (package code SS), with pin 1 = /CS, pin 2 = DO (IO1), pin 3 = /WP (IO2), pin 4 = GND, pin 5 = DI (IO0), pin 6 = CLK, pin 7 = /HOLD (IO3), pin 8 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select input | Active-low enable; places DO in high-impedance when deasserted; required low-to-high transition before instruction acceptance |
| DO / IO1 (Pin 2) | Data Output / I/O1 | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad modes; carries read data on falling CLK edge |
| /WP / IO2 (Pin 3) | Write Protect / I/O2 | Hardware lock for status register writes; repurposed as IO2 when QE=1 (Quad mode active) |
| GND (Pin 4) | Ground reference | Primary return path for VCC and all I/O signals; must be low-impedance connection |
| DI / IO0 (Pin 5) | Data Input / I/O0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad modes; accepts instructions/addresses/data on rising CLK edge |
| CLK (Pin 6) | Serial Clock input | Synchronizes all SPI transfers; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) |
| /HOLD / IO3 (Pin 7) | Hold input / I/O3 | Pauses ongoing SPI transfer while /CS remains low; repurposed as IO3 when QE=1 |
| VCC (Pin 8) | Power supply | 2.7–3.6 V nominal; powers internal charge pumps for erase/program operations |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI Enable (QE bit) | Non-volatile Status Register-2 bit enabling IO2/IO3 functionality and 4-line data transfer |
| Continuous Read Mode | As few as 8 clocks overhead to initiate read; supports wrap lengths of 8/16/32/64 bytes for true XIP execution |
| Security Registers | Three 256-byte OTP-lockable registers for secure key or calibration data storage |
| SFDP Register | JEDEC JESD216-compliant flash parameter table accessible via 5Ah instruction for automatic driver configuration |
| Erase/Program Suspend | 75h/7Ah instructions allow pausing long erase/program operations to service higher-priority interrupts |
Applications
| Boot Code Storage | Firmware Update Partition |
|---|---|
Use Scenario: Storing primary bootloader and initial firmware image for ARM Cortex-M or RISC-V microcontrollers during cold start. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP support; delivers sequential instruction fetches via Fast Read Quad I/O (EBh) at up to 416 MB/s effective rate. Use Value: Eliminates external RAM copy step; reduces boot time by >40% vs. standard SPI flash using same controller. | Use Scenario: Isolating field-upgradable firmware sections in IoT edge nodes with over-the-air (OTA) update capability. IC Role / Device Role / Timing Role: Dedicated 64 KB block-erasable partition protected by BP2/BP1/BP0 bits and SRP0/SRP1 lock-down. Use Value: Enables atomic firmware swap with rollback safety; prevents partial writes during power loss via sector-level granularity. |
| Secure Parameter Storage | Industrial HMI Display Cache |
Use Scenario: Holding calibrated sensor offsets, cryptographic keys, and device-specific identifiers in factory-programmed modules. IC Role / Device Role / Timing Role: Host for 3×256-byte OTP-locked security registers; accessed via 42h/48h/44h instructions with CMP bit enforcement. Use Value: Prevents unauthorized read/write of sensitive data without physical decapsulation or fuse blowing. | Use Scenario: Caching GUI assets (fonts, icons, bitmaps) for ARM-based human-machine interface panels in factory automation. IC Role / Device Role / Timing Role: High-throughput Quad SPI memory mapped to AXI bus via QSPI controller; uses Continuous Read Mode with 64-byte wrap. Use Value: Sustains >52 MB/s continuous read bandwidth to feed display controller FIFO without CPU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L1606EM2I-12G | Same density, 104 MHz max clock, but lacks Quad SPI (IO2/IO3) and SFDP register; uses legacy 05h/35h status reads | Not suitable for XIP or auto-configured drivers requiring SFDP; limited to Standard/Dual SPI only | Select only if Quad mode and parameter discovery are unnecessary and cost is primary constraint |
| S25FL116K0XMFI011 | 16 M-bit, supports Quad SPI and SFDP, but rated only to +70°C; no OTP security registers; uses different QE bit location (SR1[1]) | Excludes industrial temperature use cases; lacks hardware-locked key storage for secure boot | Prefer for commercial-grade consumer devices where extended temp and security are not required |
Compared with MX25L1606EM2I-12G and S25FL116K0XMFI011, W25Q16CVSFIG uniquely combines industrial temperature rating, Quad SPI with configurable IO mapping, SFDP compliance, and OTP-protected security registers - making it the only option among the three qualified for secure, XIP-capable, wide-temp embedded boot storage.
Availability
W25Q16CVSFIG is available at Aetrix Electronics and suitable for industrial HMI, automotive body control modules, and medical diagnostic equipment requiring stable component supply across extended lifecycle windows.
Supply support for W25Q16CVSFIG 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, RAM, and mobile DRAM.
The W25Q series targets high-performance embedded systems needing fast, reliable, and secure code and data storage - optimized for microcontroller boot, firmware updates, and real-time parameter retention.
FAQ
What is the package type and lead count of W25Q16CVSFIG?
W25Q16CVSFIG uses an 8-pin SOIC package with 208-mil width (package code SS). It has no leads - the package features gull-wing surface-mount pins compatible with standard reflow profiles. Pin 1 is /CS, pin 8 is VCC, and all I/O pins support Standard/Dual/Quad SPI depending on status register configuration. The 'SFIG' suffix explicitly denotes this SOIC-208 variant.
Does W25Q16CVSFIG support execute-in-place (XIP) operation?
Yes, W25Q16CVSFIG supports true XIP via Continuous Read Mode with Fast Read Quad I/O (EBh) and Octal Word Read Quad I/O (E3h) instructions. With as few as 8 clock cycles overhead per address, it delivers sustained >52 MB/s throughput - sufficient for direct instruction fetch by ARM Cortex-M4/M7 and RISC-V cores without intermediate RAM buffering.
How is Quad SPI enabled on W25Q16CVSFIG?
Quad SPI is enabled on W25Q16CVSFIG by setting the Quad Enable (QE) bit in Status Register-2 (bit 1, address 35h). This is done via Write Status Register (01h) instruction after issuing Write Enable (06h). Once QE=1, pins /WP (pin 3) and /HOLD (pin 7) become IO2 and IO3 respectively, enabling four-line data transfer.
What write protection mechanisms does W25Q16CVSFIG provide?
W25Q16CVSFIG provides layered write protection: hardware via /WP pin (active-low, disables status register writes), software via BP0–BP2, TB, SEC, and CMP bits in Status Register-1, and non-volatile lock-down via SRP0/SRP1 bits. These allow independent locking of 4 KB sectors, top/bottom array halves, or entire memory - with OTP-like permanence when SRP1=1 and SRP0=0.
Is W25Q16CVSFIG compatible with JEDEC-standard identification commands?
Yes, W25Q16CVSFIG fully supports JEDEC-standard identification: Read Manufacturer/Device ID (90h), Read JEDEC ID (9Fh), and Read Unique ID Number (4Bh). It also implements the SFDP (Serial Flash Discoverable Parameters) register (5Ah), enabling automatic driver configuration without hard-coded timing or geometry assumptions.
W25Q16CVSFIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tray
- 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:
- 104 MHz
- Write Cycle Time - Word, Page:
- 50µs, 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
W25Q16CVSFIG FAQ
1.How can I place an order for W25Q16CVSFIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16CVSFIG 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 W25Q16CVSFIG reliable?
The price and inventory of W25Q16CVSFIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16CVSFIG is usually 5 days.
3.What payment methods are accepted for W25Q16CVSFIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16CVSFIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16CVSFIG?
W25Q16CVSFIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16CVSFIG 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 W25Q16CVSFIG?
For technical support, including W25Q16CVSFIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16CVSFIG requirements.
6.How does Aetrix verify that W25Q16CVSFIG is sourced from the original manufacturer or authorized distributors?
All W25Q16CVSFIG 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 W25Q16CVSFIG meets industry standards.
7.What is the process for return or replacement of W25Q16CVSFIG?
All W25Q16CVSFIG units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16CVSFIG, 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 W25Q16CVSFIG part is unused and in its original packaging.
Return procedure for W25Q16CVSFIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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