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Winbond Electronics Corporation W25Q64FVSSJQ
- Part No.:
- W25Q64FVSSJQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q64FVSSJQ.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,015
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Product details
Overview
W25Q64FVSSJQ 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–3.6V, delivers up to 104MHz SPI clock rate (416MHz equivalent in 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 applications.
For engineers reviewing the W25Q64FVSSJQ datasheet, W25Q64FVSSJQ pinout, W25Q64FVSSJQ application, or W25Q64FVSSJQ equivalent, key selection criteria include quad I/O timing compliance, sector-erase flexibility for firmware updates, JEDEC ID and SFDP register support for auto-configuration, and SOIC-208-mil (SS) package compatibility with legacy PCB layouts.
Technical Context
The W25Q64FVSSJQ 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 internal architecture includes a 256-byte page buffer, dual status registers (SR1/SR2) with non-volatile Quad Enable (QE) bit, and hardware-controlled write protection using /WP and /HOLD pins - both repurposed as IO2/IO3 when QE=1.
It supports three erase granularities (4KB sector, 32KB block, 64KB block) and full-chip erase, with erase/program suspend/resume capability. The device integrates a 64-bit unique ID, three 256-byte security registers with OTP locks, and a JEDEC-standard SFDP register for dynamic parameter discovery - enabling robust, field-upgradable firmware storage in industrial and automotive control units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 M-bit (8 MB) organized as 32,768 × 256-byte pages |
| Interface Modes | Standard SPI (4-wire), Dual SPI (2 I/O), Quad SPI (4 I/O), and QPI (4 I/O with 2-clock instruction cycle) |
| Max Clock Frequency | 104 MHz SPI clock → 208 MHz (Dual I/O) or 416 MHz (Quad I/O/QPI) effective throughput |
| Erase Granularity | Uniform 4 KB sectors (2,048 total), 32 KB blocks (1,024), 64 KB blocks (128) |
| Data Retention | ≥20 years at +85°C - ensures long-term reliability in unattended embedded deployments |
| Endurance | 100,000 program/erase cycles per sector - supports frequent firmware update workflows |
| 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 operation without derating |
Pinout & Package
W25Q64FVSSJQ uses the 8-pin SOIC 208-mil package (package code SS), with standard pinout matching JEDEC MS-012. All pins are surface-mount compatible and support reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; places DO in high-impedance state when deasserted; required to transition H→L before new instruction acceptance |
| 2 DO (IO1) | Data Output / Quad I/O Line 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 Line 2 | Hardware lock for status register writes; disabled as /WP and repurposed as IO2 when Quad Enable (QE) bit = 1 |
| 4 GND | Ground Reference | Primary return path for VCC and all I/O signals; must be low-impedance for stable timing and noise immunity |
| 5 DI (IO0) | Data Input / Quad I/O Line 0 | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI/QPI; accepts instructions/addresses/data on rising CLK edge |
| 6 CLK | Serial Clock Input | Synchronous timing reference; supports SPI modes 0 and 3; max 104 MHz frequency defines interface bandwidth ceiling |
| 7 /HOLD (IO3) | Hold Input / Quad I/O Line 3 | Pauses ongoing read/write while /CS active; disabled as /HOLD and repurposed as IO3 when QE = 1 |
| 8 VCC | Power Supply | 2.7–3.6 V main supply; powers core logic, charge pumps, and I/O buffers; requires local 0.1 µF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead to 2 clocks per command, enabling true XIP operation with minimal CPU intervention |
| Continuous Read Mode | Supports 8/16/32/64-byte wrap bursts with only 8 clocks of instruction overhead - optimizes sequential code fetch efficiency |
| Security Register Set | Three independent 256-byte OTP-lockable registers for secure key storage, calibration data, or anti-cloning identifiers |
| JEDEC SFDP Support | Enables automatic detection of timing parameters, erase capabilities, and feature sets - eliminating hard-coded configuration |
| Erase/Program Suspend | Allows background interrupt handling during long erase/program operations - critical for real-time system responsiveness |
| 64-bit Unique ID | Factory-programmed per-device serial number for traceability, licensing, or secure boot binding |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing boot firmware and safety-critical application code in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage device interfaced directly to ARM Cortex-M7 MCU via Quad SPI; provides deterministic 416 Mbps read throughput for fast boot. Use Value: 4KB sector granularity enables atomic firmware patching without erasing full image; 20-year retention guarantees integrity across 15+ year equipment lifecycles. |
Use Scenario: Holding boot loader and sensor fusion firmware in camera/radar ECUs requiring ASIL-B compliance and rapid cold-boot response. IC Role / Device Role / Timing Role: XIP-capable NOR flash connected to Infineon AURIX TC3xx via QPI interface; executes initialization routines directly from flash with sub-100ms startup time. Use Value: JEDEC SFDP register allows runtime adaptation to temperature-dependent timing margins; security registers store cryptographic keys for secure boot verification. |
| Medical Imaging Device Configuration | Smart Energy Meter Data Logging |
Use Scenario: Storing calibration tables, UI assets, and regulatory-compliant firmware versions in portable ultrasound and MRI console systems. IC Role / Device Role / Timing Role: Dual SPI-configured memory supporting fast code shadowing to DDR during power-up; /WP pin hardwired to prevent accidental register corruption. Use Value: 100,000 endurance cycles accommodate frequent calibration updates; unique 64-bit ID enables per-unit audit trail for FDA traceability requirements. |
Use Scenario: Recording tamper-evident metering logs and tariff schedules in ANSI C12.19-compliant smart electricity meters operating in wide-temperature outdoor enclosures. IC Role / Device Role / Timing Role: Industrial-temp (-40°C to +85°C) NOR flash storing encrypted log entries; accessed via Standard SPI for simplicity and EMI resilience. Use Value: Hardware write protection (/WP + BP bits) prevents unauthorized firmware modification; 4KB sectors align with DLMS/COSEM object boundaries for atomic 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 | 64Mb density, 104MHz max clock, SOIC-8 208-mil, but lacks QPI mode and SFDP register | Requires fixed timing configuration; no runtime parameter discovery; limited to Standard/Dual SPI | Choose when QPI/XIP is unnecessary and cost sensitivity outweighs configurability needs |
| S25FL164K0XMFI011 | 64Mb density, 80MHz max clock, SOIC-8 208-mil, supports HyperBus interface (not SPI-compatible) | Requires HyperFlash controller; incompatible with standard SPI masters; higher pin count (16-pin) | Choose only if migrating to Cypress/Infineon ecosystem with HyperBus-capable SoC |
Compared with W25Q64FVSSJQ, MX25L6433FZNI-10G offers identical package and voltage but omits QPI and SFDP - limiting flexibility in adaptive firmware architectures; S25FL164K0XMFI011 trades SPI compatibility for HyperBus performance, demanding board-level redesign and controller replacement.
Availability
W25Q64FVSSJQ is available at Aetrix Electronics and suitable for industrial control, automotive telematics, and medical imaging applications requiring stable component supply, long-lifecycle support, and guaranteed SOIC-208-mil packaging consistency.
Supply support for W25Q64FVSSJQ 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 SPI NOR/NAND flash, RAM, and TrustME® secure memory products.
The W25Q series targets high-reliability embedded systems requiring fast, flexible, and secure code storage - with emphasis on XIP capability, industrial temperature operation, and standardized configuration interfaces like SFDP.
FAQ
What is the package type and footprint compatibility of W25Q64FVSSJQ?
W25Q64FVSSJQ uses the 8-pin SOIC 208-mil (package code SS) footprint, matching JEDEC MS-012 standards. It is pin-to-pin compatible with other W25Q-series devices in the same package, including W25Q32FVSSJQ and W25Q128FVSSJQ. This allows drop-in replacement within the same density family without PCB revision, provided voltage and timing constraints are met.
Does W25Q64FVSSJQ support execute-in-place (XIP) operation, and what interface mode enables it?
Yes, W25Q64FVSSJQ supports true XIP operation primarily through its Quad SPI and QPI interfaces. The Continuous Read Mode - activated via Fast Read Quad I/O (6Bh) or QPI instructions - reduces instruction overhead to just 8 clocks for address setup, enabling efficient sequential instruction fetch directly from flash by the host processor without intermediate RAM loading.
How does the /WP and /HOLD pin behavior change when Quad Enable (QE) is set?
When the Quad Enable (QE) bit in Status Register-2 is set to 1, the /WP pin becomes IO2 and the /HOLD pin becomes IO3 - disabling their hardware protection functions. This reconfiguration is mandatory for Quad SPI and QPI operation. To retain write protection, software-based status register locking (via SRP0/SRP1 bits) must be used instead of relying on the /WP pin.
What is the purpose and accessibility of the SFDP register in W25Q64FVSSJQ?
The SFDP (Serial Flash Discoverable Parameters) register in W25Q64FVSSJQ (accessed via instruction 5Ah) provides standardized, read-only access to device-specific timing, erase, and feature parameters. It allows host systems to auto-configure SPI timing margins, detect supported instruction sets, and verify erase block sizes - eliminating hardcoded assumptions and improving design portability across flash vendors.
Can W25Q64FVSSJQ be used in systems requiring data integrity after power loss during programming?
Yes, W25Q64FVSSJQ includes Erase/Program Suspend (75h) and Resume (7Ah) commands that allow interruption of long-duration operations (e.g., 64KB block erase) to service higher-priority tasks or respond to power-fail alerts. Combined with its 100,000-cycle endurance and 20-year retention, this ensures predictable recovery and data consistency even under unstable power conditions.
W25Q64FVSSJQ 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q64FVSSJQ FAQ
1.How can I place an order for W25Q64FVSSJQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q64FVSSJQ 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 W25Q64FVSSJQ reliable?
The price and inventory of W25Q64FVSSJQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q64FVSSJQ is usually 5 days.
3.What payment methods are accepted for W25Q64FVSSJQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q64FVSSJQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q64FVSSJQ?
W25Q64FVSSJQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q64FVSSJQ 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 W25Q64FVSSJQ?
For technical support, including W25Q64FVSSJQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q64FVSSJQ requirements.
6.How does Aetrix verify that W25Q64FVSSJQ is sourced from the original manufacturer or authorized distributors?
All W25Q64FVSSJQ 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 W25Q64FVSSJQ meets industry standards.
7.What is the process for return or replacement of W25Q64FVSSJQ?
All W25Q64FVSSJQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q64FVSSJQ, 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 W25Q64FVSSJQ part is unused and in its original packaging.
Return procedure for W25Q64FVSSJQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q64FVSSJQ Tags
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