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Winbond Electronics Corporation W25Q64FVSSJF TR
- Part No.:
- W25Q64FVSSJF TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q64FVSSJF TR.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,007
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Product details
Overview
W25Q64FVSSJF TR from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces, operating at up to 104 MHz clock rate with 50 MB/s continuous read throughput, 4KB uniform sector erase granularity, and 2.7–3.6 V single-supply operation - deployed for code execution (XIP), firmware storage, and parameter retention in embedded microcontroller systems.
For engineers reviewing the W25Q64FVSSJF TR datasheet, W25Q64FVSSJF TR pinout, W25Q64FVSSJF TR application, or W25Q64FVSSJF TR equivalent, key selection considerations include Quad Enable (QE) bit configuration for IO2/IO3 remapping, /WP and /HOLD functionality loss in Quad mode, 8-pin SOIC-208mil (SS) package compatibility, and JEDEC ID (EF4017) verification for firmware boot integrity.
Technical Context
The W25Q64FVSSJF TR implements a SPI-compatible command set with hardware- and software-based write protection, including top/bottom 4KB sector lock via BP2–BP0, TB, SEC, and CMP bits, plus volatile/non-volatile status register control. Its architecture supports erase/program suspend/resume, enabling concurrent background operations during active reads.
It integrates three 256-byte security registers with OTP locks, a 64-bit unique serial number, and SFDP (Serial Flash Discoverable Parameters) register (5Ah) for runtime configuration discovery. QPI mode reduces instruction overhead by encoding commands in 2-clock cycles, enabling true execute-in-place (XIP) with ≤8-clock address setup latency.
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, Dual I/O, Quad I/O, and QPI - IO0–IO3 active only when QE=1 |
| Max Clock Frequency | 104 MHz (SPI/QPI); enables 416 MHz effective Quad I/O throughput |
| Erase Granularity | Uniform 4 KB sectors (2,048 total), 32 KB blocks (1,024), 64 KB blocks (512) |
| Write Endurance | ≥100,000 program/erase cycles per sector |
| Data Retention | ≥20 years at +25°C, verified per JEDEC JESD22-A117 |
| Operating Voltage | 2.7 V to 3.6 V - supports direct connection to 3.3 V MCU I/O rails |
| Temperature Range | −40°C to +85°C - qualified for industrial-grade embedded deployment |
Pinout & Package
W25Q64FVSSJF TR uses an 8-pin SOIC-208mil (package code SS) with gull-wing leads, 1.27 mm pitch, and RoHS-compliant matte tin finish. Pin 1 is marked by a beveled corner or dot; device is lead-free and halogen-free per IPC/JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO output and standby current (<1 µA) when deasserted |
| 2 DO (IO1) | Data Output / Quad I/O 1 | Unidirectional output in Standard SPI; bidirectional in Dual/Quad modes; requires QE=1 for Quad use |
| 3 /WP (IO2) | Write Protect Input / Quad I/O 2 | Hardware lock for status register writes; repurposed as IO2 when QE=1 - disables /WP function |
| 4 GND | Ground Reference | Primary return path for VCC and I/O signals; must be low-inductance connection for noise immunity |
| 5 DI (IO0) | Data Input / Quad I/O 0 | Unidirectional input in Standard SPI; bidirectional in Dual/Quad modes; rising-edge sampled on CLK |
| 6 CLK | Serial Clock Input | Master-generated timing signal; supports SPI Mode 0 and Mode 3; max 104 MHz frequency |
| 7 /HOLD (IO3) | Hold Input / Quad I/O 3 | Pauses ongoing transfer without deselecting; repurposed as IO3 when QE=1 - disables /HOLD function |
| 8 VCC | Power Supply | 2.7–3.6 V supply; decoupling capacitor (100 nF X7R) required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction overhead to 2 clocks per command, enabling deterministic XIP latency and eliminating mode-switching delays |
| Erase/Program Suspend & Resume | Allows interruption of long erase/program cycles to service time-critical reads, improving real-time system responsiveness |
| 64-bit Unique Serial Number | Factory-programmed per-device identifier used for secure firmware binding, anti-cloning, and field unit traceability |
| Security Registers (3 × 256 B) | OTP-lockable nonvolatile storage for cryptographic keys, calibration data, or license tokens - inaccessible via standard read commands |
| SFDP Register (5Ah) | Standardized parameter table enabling automatic driver initialization without hard-coded timing or voltage assumptions |
| Continuous Read with Wrap | Supports 8/16/32/64-byte burst wrap modes, minimizing address overhead for sequential access in bootloaders and audio buffers |
Applications
| Boot Code Storage | Firmware Over-the-Air (OTA) |
|---|---|
Use Scenario: Storing primary bootloader and application firmware for ARM Cortex-M or RISC-V microcontrollers during cold start. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP-capable Quad I/O interface enabling direct execution without RAM copy. Use Value: Reduces boot time by >40% vs. standard SPI and eliminates 8–16 KB RAM footprint otherwise needed for firmware staging. | Use Scenario: Receiving encrypted firmware updates wirelessly in IoT edge nodes with constrained memory and power budgets. IC Role / Device Role / Timing Role: Secure, field-upgradable storage partition with dedicated security registers for signature validation keys. Use Value: Enables atomic dual-bank update with rollback via 4KB sector granularity, preventing bricking during power loss. |
| Industrial HMI Configuration | Automotive Telematics Logging |
Use Scenario: Persisting display layouts, language packs, and user preferences across power cycles in factory HMIs. IC Role / Device Role / Timing Role: Parameter storage with hardware write-protection (/WP pin + BP bits) to prevent accidental corruption during ESD events. Use Value: Guarantees configuration integrity over 10+ years without battery backup or wear-leveling firmware. | Use Scenario: Recording CAN bus diagnostic logs, GPS coordinates, and sensor metadata in automotive telematics gateways. IC Role / Device Role / Timing Role: High-endurance data logger using sector erase suspend/resume to avoid data loss during ignition cycling. Use Value: Achieves >100K write cycles per sector - sufficient for 5+ years of daily 100-record logging at −40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L6433FZNI-10G | 64 M-bit, 104 MHz max, but lacks QPI mode and SFDP register; uses different JEDEC ID (C22017) | No native execute-in-place support; requires custom driver for dual/quad mode initialization | Prefer W25Q64FVSSJF TR when QPI, SFDP, or security registers are required |
| S25FL164K0XMFI010 | 64 M-bit, 80 MHz max, supports HyperBus interface (not SPI-compatible); includes ECC but no security registers | Requires HyperFlash controller; incompatible pinout and command set - not drop-in | Select W25Q64FVSSJF TR for SPI-native designs needing Quad I/O throughput and integrated security |
Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, the W25Q64FVSSJF TR delivers higher effective bandwidth via QPI, standardized configuration via SFDP, and tamper-resistant key storage - making it optimal for secure, high-speed embedded boot and OTA applications where SPI compatibility and feature integration are critical.
Availability
W25Q64FVSSJF TR is available at Aetrix Electronics and suitable for industrial HMIs, automotive telematics gateways, and IoT OTA firmware updates requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for W25Q64FVSSJF 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 manufacturer specializing in specialty memory solutions, including SPI NOR/NAND flash, PSRAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.
The W25Q series targets embedded systems requiring high-speed, secure, and reliable code and data storage - designed specifically for XIP, OTA, and safety-critical firmware retention with robust write protection and endurance.
FAQ
What is the JEDEC ID of the W25Q64FVSSJF TR and how is it used in system initialization?
The W25Q64FVSSJF TR reports JEDEC ID EF4017 (manufacturer ID EFh, device ID 4017h) via Read JEDEC ID (9Fh) command. This ID is read during boot to verify flash identity before executing configuration sequences or loading firmware, ensuring correct driver initialization and preventing mismatched part operation. The W25Q64FVSSJF TR's ID is distinct from other Winbond families (e.g., W25Q80 = EF4014), enabling safe multi-part BOM handling.
Does the W25Q64FVSSJF TR support execute-in-place (XIP) operation, and what interface mode is required?
Yes, the W25Q64FVSSJF TR supports true XIP via Continuous Read Mode with Quad I/O or QPI interfaces. In QPI mode (enabled via 38h command), instruction overhead drops to 2 clocks, enabling deterministic latency for direct CPU fetch. Standard SPI does not meet XIP timing requirements due to higher overhead; the W25Q64FVSSJF TR must have QE=1 set and operate in Quad I/O or QPI to achieve sub-100 ns effective access.
How does the /WP pin function change when Quad Enable (QE) is set on the W25Q64FVSSJF TR?
When the Quad Enable (QE) bit in Status Register-2 is set to 1, the /WP pin on the W25Q64FVSSJF TR is remapped as IO2 (Quad I/O line 2) and loses its hardware write-protect function. Software-based protection (BP bits, SRP) remains active, but physical /WP assertion no longer blocks status register writes. This behavior is documented in Section 4.3 and confirmed in Figure 1a–1c of the datasheet.
What is the purpose of the SFDP register (5Ah) in the W25Q64FVSSJF TR and how does it benefit firmware development?
The SFDP (Serial Flash Discoverable Parameters) register (5Ah) in the W25Q64FVSSJF TR provides a standardized, versioned table of timing parameters, voltage ranges, and feature flags readable at runtime. It eliminates hardcoded assumptions in flash drivers, enabling portable firmware across multiple Winbond and third-party SPI flash parts. The W25Q64FVSSJF TR's SFDP table includes QPI timing, erase block sizes, and security register layout - reducing bring-up time and qualification effort.
Can the W25Q64FVSSJF TR's security registers be accessed through standard read commands?
No, the W25Q64FVSSJF TR's three 256-byte security registers are inaccessible via standard Read Data (03h) or Fast Read (0Bh) instructions. They require dedicated commands: Read Security Registers (48h), Program Security Registers (42h), and Erase Security Registers (44h). Access is further restricted by OTP lock bits (LB1–LB3) - once set, LB bits permanently disable reprogramming of associated security register regions.
W25Q64FVSSJF 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:
- 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
W25Q64FVSSJF TR FAQ
1.How can I place an order for W25Q64FVSSJF TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q64FVSSJF 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 W25Q64FVSSJF TR reliable?
The price and inventory of W25Q64FVSSJF TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q64FVSSJF TR is usually 5 days.
3.What payment methods are accepted for W25Q64FVSSJF TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q64FVSSJF TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q64FVSSJF TR?
W25Q64FVSSJF TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q64FVSSJF 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 W25Q64FVSSJF TR?
For technical support, including W25Q64FVSSJF TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q64FVSSJF TR requirements.
6.How does Aetrix verify that W25Q64FVSSJF TR is sourced from the original manufacturer or authorized distributors?
All W25Q64FVSSJF 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 W25Q64FVSSJF TR meets industry standards.
7.What is the process for return or replacement of W25Q64FVSSJF TR?
All W25Q64FVSSJF TR units undergo pre-shipment inspection (PSI). If there is an issue with W25Q64FVSSJF 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 W25Q64FVSSJF TR part is unused and in its original packaging.
Return procedure for W25Q64FVSSJF TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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