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Winbond Electronics Corporation W25Q64FVSSIQ
- Part No.:
- W25Q64FVSSIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q64FVSSIQ.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,622
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Product details
Overview
W25Q64FVSSIQ from Winbond is a 64M-bit (8MB) serial NOR flash memory IC designed for code storage and XIP execution in space-constrained embedded systems. It supports Standard/Dual/Quad SPI and QPI interfaces, operates from 2.7V–3.6V, delivers up to 104MHz clock rate (416MHz equivalent Quad I/O), and features uniform 4KB sectors, 100,000 program/erase cycles, and 20-year data retention.
For engineers reviewing the W25Q64FVSSIQ datasheet, W25Q64FVSSIQ pinout, W25Q64FVSSIQ application, or W25Q64FVSSIQ equivalent, key selection criteria include Quad SPI/XIP support, hardware write protection via /WP and /HOLD pins, JEDEC ID and SFDP register compliance, and compatibility with industrial temperature range (-40°C to +85°C) designs.
Technical Context
The W25Q64FVSSIQ implements a flexible SPI-compatible command set with dedicated instructions for Fast Read Dual/Quad I/O (3Bh/6Bh/BBh/EBh), Quad Input Page Program (32h), and QPI mode (enabled via 38h instruction). Its architecture includes three 256-byte security registers, a 64-bit unique ID, and SFDP register for discoverable parameters - enabling automatic configuration in modern bootloaders.
It uses non-volatile status register bits (QE, BP0–BP2, TB, SEC, CMP) to configure memory protection granularity down to 4KB sectors, while supporting erase/program suspend/resume for real-time system responsiveness. The device requires no external high-voltage supply, integrating on-chip charge pumps for internal programming and erasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 M-bit (8 MB), organized as 32,768 × 256-byte pages |
| Interface Support | Standard SPI, Dual SPI, Quad SPI, and Quad Peripheral Interface (QPI) - enables true execute-in-place (XIP) |
| Max Clock Rate | 104 MHz SPI clock; yields 208 MHz (Dual I/O) or 416 MHz (Quad I/O) effective throughput |
| Erase Granularity | Uniform 4 KB sectors, 32 KB blocks, 64 KB blocks, and full-chip erase - supports fine-grained firmware partitioning |
| Endurance & Retention | 100,000 program/erase cycles per sector; 20-year data retention at +85°C |
| Supply Voltage | 2.7 V to 3.6 V single supply - compatible with 3.3 V logic domains without level shifting |
| Operating Temp | -40°C to +85°C - qualified for industrial-grade embedded applications |
| Security Features | Three 256-byte OTP-locked security registers, 64-bit unique ID, SFDP register, and software/hardware write protection |
Pinout & Package
W25Q64FVSSIQ is packaged in an 8-pin SOIC 208-mil (package code SS), with gull-wing leads, 1.27 mm pitch, and RoHS-compliant matte tin finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | /CS | Active-low chip select - enables SPI communication; high-impedance DO when deasserted |
| 2 | DO (IO1) | Data output (Standard/Dual SPI) or bidirectional I/O (Quad SPI/QPI) - carries read data or address bytes |
| 3 | /WP (IO2) | Hardware write protect input (Standard/Dual); becomes IO2 in Quad mode when QE=1 - enables sector-level lock |
| 4 | GND | Signal ground reference - must be low-impedance connection for stable read/write margins |
| 5 | DI (IO0) | Data input (Standard/Dual SPI) or bidirectional I/O (Quad SPI/QPI) - carries commands, addresses, and program data |
| 6 | CLK | Input clock for all SPI/QPI operations - supports Mode 0 and Mode 3; timing-critical for setup/hold compliance |
| 7 | /HOLD (IO3) | Hold input (Standard/Dual); becomes IO3 in Quad mode when QE=1 - pauses ongoing transfers without deselecting |
| 8 | VCC | Primary power supply (2.7–3.6 V) - requires local 100 nF ceramic decoupling near pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead to 2 clocks per byte vs. 8+ in Standard SPI - enables deterministic XIP latency |
| Continuous Read Mode | Supports 8/16/32/64-byte wrap with ≤8-clock address overhead - eliminates address retransmission for sequential access |
| Erase/Program Suspend & Resume | Allows background erase or program to pause for higher-priority interrupt service - critical for real-time firmware updates |
| JEDEC SFDP Register | Provides standardized, vendor-agnostic parameter table - enables automatic driver initialization in Linux U-Boot and Zephyr |
| Top/Bottom Block Protection | Configurable via TB bit and BP0–BP2 - protects bootloader region (top) or configuration data (bottom) from accidental overwrite |
| 64-bit Unique Serial Number | Factory-programmed per-device ID - used for secure device authentication and firmware binding in IoT edge nodes |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Bootloader |
|---|---|
|
Use Scenario: Storing firmware images and configuration tables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP capability - executes boot code directly from flash without RAM copy. Use Value: 4KB sector erase enables atomic firmware updates; -40°C to +85°C rating ensures reliability across thermal cycling in uncontrolled enclosures. |
Use Scenario: Hosting safety-critical boot firmware and sensor calibration data for automotive camera/radar modules. IC Role / Device Role / Timing Role: Secure, fast-read boot memory - leverages QPI mode for sub-100 µs instruction fetch latency during cold start. Use Value: Three OTP-locked security registers store cryptographic keys; JEDEC ID and SFDP enable ASIL-B compliant bootloader validation. |
| Medical Imaging Device UI | Smart Home Gateway OTA |
|
Use Scenario: Holding GUI assets, localization strings, and regulatory compliance logs in portable ultrasound and ECG devices. IC Role / Device Role / Timing Role: Parameter and asset storage - uses uniform 4KB sectors to isolate UI language packs from firmware binaries. Use Value: Hardware /WP and /HOLD pins allow safe field updates without risk of corruption during power interruption or user interaction. |
Use Scenario: Enabling over-the-air firmware upgrades for Wi-Fi/Zigbee gateways with zero downtime requirements. IC Role / Device Role / Timing Role: Dual-bank update storage - one bank active, one bank receiving new image via Quad SPI streaming. Use Value: Erase/program suspend allows immediate response to network interrupts; 100K-cycle endurance supports >5 years of daily updates. |
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 clock, but lacks QPI mode and SFDP register; uses different status register layout | No native XIP optimization; requires custom driver for security register access | Prefer W25Q64FVSSIQ where QPI, SFDP, or security register standardization is required |
| S25FL164K0XMFI010 | 64 M-bit, supports HyperBus interface (not SPI/QPI); higher pin count (16-pin SOIC), no /HOLD pin | Targeted at high-bandwidth MCU interfaces (e.g., Cypress PSoC6), not legacy SPI microcontrollers | Choose W25Q64FVSSIQ for drop-in SPI/QPI replacement in existing 8-pin footprint designs |
Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, the W25Q64FVSSIQ uniquely combines QPI mode, SFDP compliance, and 8-pin SOIC packaging - delivering standardized XIP readiness and simplified qualification for industrial and automotive firmware storage.
Availability
W25Q64FVSSIQ is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS bootloader deployment, and medical imaging device UI asset management requiring stable component supply across multi-year production cycles.
Supply support for W25Q64FVSSIQ 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 and SRAM, serving industrial, automotive, and consumer markets since 1987.
The W25Q64FV series belongs to Winbond's SpiFlash family - engineered for high-speed, low-power, and secure code storage in resource-constrained embedded systems requiring XIP, firmware resilience, and long-term data integrity.
FAQ
What is the package type and lead finish of W25Q64FVSSIQ?
W25Q64FVSSIQ uses an 8-pin SOIC 208-mil package (package code SS) with gull-wing leads, 1.27 mm pitch, and matte tin (Sn) RoHS-compliant finish. This package is pin-compatible with industry-standard 8-pin SOIC footprints and supports reflow soldering per J-STD-020.
Does W25Q64FVSSIQ support execute-in-place (XIP) operation?
Yes, W25Q64FVSSIQ supports true XIP via Continuous Read Mode and Quad Peripheral Interface (QPI). With as few as 8 clocks to address memory and 416 MHz effective throughput in Quad I/O mode, it enables deterministic instruction fetch directly from flash without RAM buffering - validated in ARM Cortex-M and RISC-V bootloaders.
How is hardware write protection implemented on W25Q64FVSSIQ?
W25Q64FVSSIQ implements hardware write protection using the /WP pin (Pin 3) in Standard/Dual SPI mode, which locks status registers when asserted low. When Quad SPI is enabled (QE=1), /WP becomes IO2 and protection relies on non-volatile BP0–BP2, TB, and SEC bits - allowing sector- or block-level lockdown independent of pin state.
What is the function of the /HOLD pin on W25Q64FVSSIQ?
The /HOLD pin (Pin 7) on W25Q64FVSSIQ pauses ongoing SPI transactions while maintaining chip select assertion - useful in multi-device buses. When pulled low, it places DO in high-impedance and ignores DI/CLK edges. In Quad SPI mode (QE=1), /HOLD becomes IO3 and this function is disabled.
Is W25Q64FVSSIQ compatible with JEDEC-standard identification and parameter discovery?
Yes, W25Q64FVSSIQ fully complies with JEDEC standards: it responds to Read JEDEC ID (9Fh), provides a standardized SFDP register (5Ah) with configurable parameters, and supports Manufacturer/Device ID reads (90h/92h/94h) - enabling automatic driver initialization in Linux, Zephyr, and FreeRTOS BSPs.
W25Q64FVSSIQ 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:
- Not 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
W25Q64FVSSIQ FAQ
1.How can I place an order for W25Q64FVSSIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q64FVSSIQ 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 W25Q64FVSSIQ reliable?
The price and inventory of W25Q64FVSSIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q64FVSSIQ is usually 5 days.
3.What payment methods are accepted for W25Q64FVSSIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q64FVSSIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q64FVSSIQ?
W25Q64FVSSIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q64FVSSIQ 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 W25Q64FVSSIQ?
For technical support, including W25Q64FVSSIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q64FVSSIQ requirements.
6.How does Aetrix verify that W25Q64FVSSIQ is sourced from the original manufacturer or authorized distributors?
All W25Q64FVSSIQ 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 W25Q64FVSSIQ meets industry standards.
7.What is the process for return or replacement of W25Q64FVSSIQ?
All W25Q64FVSSIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q64FVSSIQ, 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 W25Q64FVSSIQ part is unused and in its original packaging.
Return procedure for W25Q64FVSSIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q64FVSSIQ Tags
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