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Winbond Electronics Corporation W25Q64FVSSIG
- Part No.:
- W25Q64FVSSIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q64FVSSIG.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,803
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Product details
Overview
W25Q64FVSSIG from Winbond is a 64M-bit (8MB) serial NOR flash memory IC designed for code storage and execution in space-constrained embedded systems. It supports Standard/Dual/Quad SPI and QPI interfaces, operates from 2.7V to 3.6V, delivers up to 104MHz clock rate (416MHz equivalent Quad I/O), and features 4KB uniform sectors, 20-year data retention, and hardware write protection via /WP and /HOLD pins. It is commonly used for boot code storage and XIP (execute-in-place) firmware in microcontroller-based IoT edge nodes.
For engineers reviewing the W25Q64FVSSIG datasheet, W25Q64FVSSIG pinout, W25Q64FVSSIG application, or W25Q64FVSSIG equivalent, key selection considerations include Quad SPI timing compliance, sector-erase flexibility for firmware OTA updates, JEDEC ID and SFDP register support for auto-configuration, and SOIC-8 (208-mil) package compatibility with legacy PCB footprints.
Technical Context
The W25Q64FVSSIG implements a quad-I/O-capable SPI peripheral with non-volatile status register control (QE bit required to enable IO2/IO3), supporting both standard SPI Mode 0/3 and QPI's 2-clock instruction cycle. Its architecture includes a 256-byte page buffer, 32,768 programmable pages, and dedicated logic for erase/program suspend-resume operations.
It integrates three 256-byte security registers with OTP locks, a 64-bit unique serial number, and SFDP (Serial Flash Discoverable Parameters) register for runtime configuration discovery. Hardware write protection combines /WP pin control with BP0–BP2, TB, SEC, and CMP bits in Status Registers 1 and 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 M-bit (8 MB) - supports full firmware images for mid-tier MCUs without external memory expansion. |
| Interface Modes | Standard SPI, Dual SPI, Quad SPI, QPI - enables scalable bandwidth: 104 MHz base clock yields 208 MB/s (Dual) or 416 MB/s (Quad) effective throughput. |
| Erase Granularity | 4 KB sectors (2,048 total), 32 KB blocks (1,024), 64 KB blocks (128) - allows fine-grained OTA update partitioning and parameter storage isolation. |
| Write Endurance | 100,000 program/erase cycles per sector - ensures robust field lifetime for frequently updated configuration or logging sectors. |
| Data Retention | 20 years at +85°C - validated for industrial temperature operation without refresh or backup power. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic domains and brown-out tolerant across wide input ranges. |
| Active Current | 4 mA typical at 104 MHz - enables low-power bootloading and background firmware validation in battery-backed systems. |
| Power-down Current | 1 µA typical - minimizes standby leakage in always-on edge sensor nodes. |
Pinout & Package
W25Q64FVSSIG uses an 8-pin SOIC-208-mil (package code SS) with industry-standard pinout and 1.27 mm pitch. This package supports reflow soldering and is compatible with automated assembly lines and legacy socketed debug fixtures.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable: places DO in high-impedance state when deasserted; required to transition high→low before accepting new instructions after power-up. |
| 2 DO (IO1) | Data Output / Quad I/O 1 | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad SPI/QPI; carries read data on falling CLK edge. |
| 3 /WP (IO2) | Write Protect Input / Quad I/O 2 | Hardware lock for Status Registers when QE=0; repurposed as IO2 in Quad mode (QE=1); active-low assertion prevents writes. |
| 4 GND | Ground Reference | Primary return path for VCC and all I/O signals; must be low-inductance connection to minimize noise during fast read/write transitions. |
| 5 DI (IO0) | Data Input / Quad I/O 0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI/QPI; carries instructions/addresses/data on rising CLK edge. |
| 6 CLK | Serial Clock Input | Synchronous timing reference; supports Mode 0 (CLK idle low) and Mode 3 (CLK idle high); max 104 MHz frequency. |
| 7 /HOLD (IO3) | Hold Input / Quad I/O 3 | Pauses ongoing read/write while /CS remains low; repurposed as IO3 in Quad mode (QE=1); active-low assertion halts bus activity. |
| 8 VCC | Power Supply | Single 2.7–3.6 V supply; decoupling capacitor (0.1 µF) required near pin to suppress switching noise during page programming. |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead to 2 clocks per command, enabling true XIP execution with minimal CPU wait states. |
| Continuous Read Mode | Supports 8/16/32/64-byte wrap with only 8 clocks to address memory - eliminates address-reload latency during linear code fetch. |
| Erase/Program Suspend-Resume | Allows foreground read access during background erase or program - critical for real-time systems requiring concurrent firmware update and operation. |
| JEDEC SFDP Register | Provides standardized, runtime-discoverable parameters (e.g., erase sizes, timing, voltage) - eliminates hard-coded flash driver assumptions. |
| 64-bit Unique Serial Number | Enables device-level traceability and secure key binding in certified IoT deployments without external EEPROM. |
| Three 256-byte Security Registers | OTP-lockable storage for cryptographic keys or calibration data - isolated from main array and protected by separate write-enable sequence. |
Applications
| Industrial PLC Firmware Storage | Automotive Telematics Boot Memory |
|---|---|
|
Use Scenario: Storing bootloader and application firmware in programmable logic controllers operating in harsh environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP capability; provides deterministic 104 MHz SPI access timing for deterministic boot sequence. Use Value: 20-year data retention and 100K-cycle endurance ensure firmware integrity over 15+ year product lifecycles without field replacement. |
Use Scenario: Hosting secure boot images and OTA update partitions in vehicle telematics control units (TCUs) requiring AEC-Q100 alignment. IC Role / Device Role / Timing Role: Trusted boot source with 64-bit unique ID and security registers for asymmetric key storage; supports fast Quad I/O reads during cold boot. Use Value: Hardware write protection (/WP pin + BP bits) prevents unauthorized firmware modification during CAN bus diagnostics or service programming. |
| Medical Sensor Data Logging | Smart Home Gateway Configuration |
|
Use Scenario: Capturing timestamped sensor readings and calibration metadata in portable diagnostic devices with limited board space. IC Role / Device Role / Timing Role: Dual-function storage: 4KB sectors hold volatile logs; security registers store factory calibration coefficients. Use Value: Erase/program suspend allows uninterrupted sensor acquisition while background logging commits to flash - no dropped samples during write latency. |
Use Scenario: Storing Wi-Fi credentials, Zigbee mesh keys, and user preferences in residential gateways with frequent firmware updates. IC Role / Device Role / Timing Role: Parameter partitioning using top/bottom block protection (TB bit) isolates user settings from firmware upgrades. Use Value: SFDP register enables automatic driver adaptation across W25Q64FV variants - simplifies BOM management for multi-region SKUs. |
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 |
|---|---|---|---|
| MX25L6433FZNI-10G | 64 M-bit, 104 MHz max, SOIC-8, but lacks QPI mode and SFDP register; uses different status register layout. | No QPI or SFDP support limits XIP efficiency and driver portability; requires custom initialization code. | Select when legacy SPI-only interface suffices and cost sensitivity outweighs configurability needs. |
| S25FL164K0XMFI010 | 64 M-bit, 80 MHz max, SOIC-8, supports Octal DTR mode (not on W25Q64FVSSIG); includes hardware reset pin. | Lower max clock limits throughput in high-speed boot scenarios; Octal DTR offers higher bandwidth but requires controller support. | Select when system controller supports Octal DTR and higher density (128 MB+) variants are planned for roadmap scalability. |
Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, W25Q64FVSSIG uniquely balances QPI-enabled XIP performance, SFDP-driven driver flexibility, and proven 20-year industrial retention - making it optimal for next-generation connected devices requiring field-upgradable, secure, and footprint-compatible flash.
Availability
W25Q64FVSSIG is available at Aetrix Electronics and suitable for industrial PLCs, automotive telematics modules, medical sensor loggers, and smart home gateways requiring stable component supply across extended product lifecycles.
Supply support for W25Q64FVSSIG 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 serial flash, RAM, and mobile DRAM, with global manufacturing and quality certifications.
The W25Q64FV series belongs to Winbond's SpiFlash family, engineered for high-reliability embedded code storage and execution-emphasizing fast Quad I/O throughput, flexible erase architecture, and integrated security features for IoT and industrial applications.
FAQ
What is the maximum clock frequency supported by W25Q64FVSSIG in Quad SPI mode?
W25Q64FVSSIG supports up to 104 MHz on the CLK pin in Quad SPI mode, delivering an effective data rate of 416 MB/s (104 MHz × 4 bits per cycle). This is confirmed in the AC Electrical Characteristics section (Section 8.6) of the official datasheet, where tV and tCH timing parameters are specified for 104 MHz operation with Quad I/O instructions like Fast Read Quad I/O (EBh).
Does W25Q64FVSSIG support execute-in-place (XIP) operation, and what conditions are required?
Yes, W25Q64FVSSIG supports true XIP operation via Continuous Read Mode and QPI. To enable XIP, the device must be configured with QE=1 (Quad Enable bit set in Status Register-2), and the host controller must issue Fast Read Quad I/O (EBh) or QPI instructions. The 8-clock address overhead and wrap capability eliminate pipeline stalls during sequential instruction fetch, as detailed in Section 2 (Features) and Section 6.1.4 (QPI Instructions).
How is hardware write protection implemented on W25Q64FVSSIG?
W25Q64FVSSIG implements dual-layer hardware write protection: the /WP pin (Pin 3) disables Status Register writes when asserted low (if QE=0), and Block Protect (BP2–BP0), Top/Bottom (TB), Sector Protect (SEC), and Complement Protect (CMP) bits in Status Registers 1 and 2 define protected memory regions. These features are documented in Sections 4.3, 6.2, and 7.1.3–7.1.6 of the datasheet.
What package type does W25Q64FVSSIG use, and is it RoHS compliant?
W25Q64FVSSIG uses an 8-pin SOIC-208-mil package (package code SS), as indicated in Section 9.1 and Figure 1a of the datasheet. It is RoHS compliant and halogen-free, meeting JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements - verified in the "Ordering Information" table (Section 9.11) and Package Specification section.
Can W25Q64FVSSIG be used with microcontrollers lacking native Quad SPI peripherals?
Yes, W25Q64FVSSIG is fully backward compatible with standard SPI controllers. It supports Standard SPI (DI/DO), Dual SPI (IO0/IO1), and Quad SPI (IO0–IO3) modes - all selectable via instruction set. A standard SPI MCU can use Read Data (03h) or Fast Read (0Bh) commands without enabling QE, retaining full functionality at lower bandwidth. This interoperability is defined in Sections 6.1.1–6.1.4 and Instruction Set Tables 1–4.
W25Q64FVSSIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 64Mbit
- Memory Organization:
- 8M x 8
- Memory Interface:
- SPI - Quad I/O, QPI
- 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:
- 8-SOIC
W25Q64FVSSIG FAQ
1.How can I place an order for W25Q64FVSSIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q64FVSSIG 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 W25Q64FVSSIG reliable?
The price and inventory of W25Q64FVSSIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q64FVSSIG is usually 5 days.
3.What payment methods are accepted for W25Q64FVSSIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q64FVSSIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q64FVSSIG?
W25Q64FVSSIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q64FVSSIG 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 W25Q64FVSSIG?
For technical support, including W25Q64FVSSIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q64FVSSIG requirements.
6.How does Aetrix verify that W25Q64FVSSIG is sourced from the original manufacturer or authorized distributors?
All W25Q64FVSSIG 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 W25Q64FVSSIG meets industry standards.
7.What is the process for return or replacement of W25Q64FVSSIG?
All W25Q64FVSSIG units undergo pre-shipment inspection (PSI). If there is an issue with W25Q64FVSSIG, 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 W25Q64FVSSIG part is unused and in its original packaging.
Return procedure for W25Q64FVSSIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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