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Winbond Electronics Corporation W25Q64FWZEIG
- Part No.:
- W25Q64FWZEIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q64FWZEIG.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,926
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Product details
Overview
W25Q64FWZEIG from Winbond is a 1.8V, 64M-bit (8MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI and QPI interfaces. It delivers 104MHz SPI clock operation, 50MB/s continuous read throughput, and features uniform 4KB sectors, 32KB/64KB blocks, and 256-byte page programming. It is used for code execution in place (XIP), firmware storage, and parameter retention in space-constrained embedded systems.
For engineers reviewing the W25Q64FWZEIG datasheet, W25Q64FWZEIG pinout, W25Q64FWZEIG application, or W25Q64FWZEIG equivalent, key selection considerations include Quad Enable (QE) bit configuration, /HOLD vs /RESET functional mode, IO pin remapping in Quad mode, and JEDEC-compliant SFDP register support for auto-configuration.
Technical Context
The W25Q64FWZEIG implements a flexible SPI command architecture with three operational modes: Standard SPI (DI/DO), Dual SPI (IO0/IO1), and Quad SPI/QPI (IO0–IO3). Its status register includes non-volatile Quad Enable (QE) and volatile HOLD/RST select bits that determine whether pin 7 functions as /HOLD or /RESET - critical for hardware compatibility across variants.
It supports erase/program suspend/resume, individual sector/block lock/unlock via dedicated instructions (36h/39h/7Eh/98h), and three 256-byte security registers with OTP locking. The device uses internal high-voltage generators for erase/program cycles and retains data for >20 years with >100,000 program/erase cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 M-bit (8 MB), organized as 32,768 × 256-byte pages |
| Supply Voltage | 1.65 V to 1.95 V - enables low-power operation in battery-backed or energy-efficient designs |
| Max Clock Frequency | 104 MHz SPI; 208 MHz dual I/O; 416 MHz quad I/O - enables XIP performance competitive with parallel flash |
| Erase Granularity | 4 KB sectors, 32 KB blocks, 64 KB blocks, full chip - supports fine-grained firmware updates and data logging |
| Write Endurance | 100,000 program/erase cycles per sector - suitable for field-upgradable firmware with frequent minor patches |
| Data Retention | 20+ years at +25°C - ensures long-term reliability in industrial and automotive control modules |
| Interface Modes | Standard SPI, Dual SPI, Quad SPI, QPI - allows runtime mode switching for bandwidth vs. pin-count trade-offs |
| Security Features | 64-bit unique ID, SFDP register, 3×256B security registers with OTP locks - supports secure boot and device authentication |
Pinout & Package
W25Q64FWZEIG is packaged in an 8-pin WSON 6×5-mm (JEDEC MO-252, package code ZP), with exposed pad for thermal dissipation and RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; must transition high→low after power-up before first instruction |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional in Dual/Quad modes |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware write protection when QE=0; becomes IO2 in Quad mode (QE=1) |
| 4 GND | Ground Reference | Primary return path; connects to exposed thermal pad on bottom of WSON package |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional in Dual/Quad modes |
| 6 CLK | Serial Clock Input | Edge-triggered timing source; supports SPI modes 0 and 3 |
| 7 /HOLD or /RESET (IO3) | Hold or Reset Input / Bidirectional I/O | Selectable function via Status Register bit HOLD/RST; becomes IO3 in Quad mode (QE=1) |
| 8 VCC | Power Supply | 1.65–1.95 V supply; requires local 1 µF ceramic decoupling capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Continuous Read Mode | As few as 8 clocks overhead to address memory - enables true XIP with minimal latency penalty |
| Quad Peripheral Interface (QPI) | 2-clock instruction fetch (vs. 8-clock SPI) - reduces instruction overhead by 75% in high-frequency XIP applications |
| Erase/Program Suspend & Resume | Allows background operations to pause during interrupt servicing - improves real-time system responsiveness |
| Individual Sector/Block Lock | Per-sector lock/unlock via 36h/39h instructions - enables secure, granular firmware partitioning without global protection |
| Discoverable Parameters (SFDP) | JEDEC JESD216-compliant register - enables automatic driver initialization without hard-coded timing tables |
| Volatile & Non-Volatile Status Bits | BP2–BP0, TB, SEC, CMP, SRP0/SRP1 configurable in both volatile and non-volatile forms - supports dynamic and persistent protection schemes |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Image |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in harsh temperature environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP capability and hardware write protection against accidental overwrites during field updates. Use Value: 4KB sector granularity enables patch-level firmware updates without erasing entire application image; 100K-cycle endurance supports decades of field maintenance cycles. | Use Scenario: Hosting boot code and safety-critical sensor calibration data for radar and camera modules in autonomous driving systems. IC Role / Device Role / Timing Role: Secure, fast-read boot memory interfaced via Quad SPI to reduce boot time; leverages 64-bit unique ID for anti-counterfeiting. Use Value: 50MB/s continuous read rate accelerates boot sequence; SFDP register enables automatic driver adaptation across multiple ECU platforms. |
| Medical IoT Sensor Node | Consumer Smart Home Hub |
Use Scenario: Storing encrypted sensor calibration profiles and regulatory compliance logs in portable diagnostic devices with strict power budgets. IC Role / Device Role / Timing Role: Low-voltage (1.65–1.95 V), ultra-low-power memory with <1 µA power-down current and hardware-based write protection. Use Value: 1.8 V operation extends battery life; three OTP-locked security registers store cryptographic keys isolated from main array. | Use Scenario: Holding OTA update packages, voice model assets, and user preference data in always-on home automation hubs. IC Role / Device Role / Timing Role: High-density (8 MB), pin-efficient flash interfaced via QPI to maximize throughput while minimizing MCU GPIO usage. Use Value: QPI mode cuts instruction overhead by 75%, enabling faster OTA decompression; 64KB block erase supports efficient large-file 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 | 3.3 V supply, 104 MHz max clock, same 64 M-bit density and WSON-8 package | Requires level-shifting for 1.8 V systems; lacks QPI mode and SFDP register | Choose only if existing design uses 3.3 V rail and does not require QPI or auto-configuration |
| S25FL164K0XMFI011 | 1.8 V supply, 80 MHz max clock, 64 M-bit density, WSON-8 package, supports Octal DTR mode | Lower max frequency; adds Octal DTR but no QPI; different security register implementation | Prefer when Octal DTR compatibility is required and 104 MHz bandwidth is not critical |
Compared with MX25L6433FZNI-10G and S25FL164K0XMFI011, the W25Q64FWZEIG uniquely combines 1.8 V operation, 104 MHz Quad SPI, QPI mode, JEDEC SFDP, and OTP-secured security registers - making it optimal for new XIP-capable, secure, low-voltage embedded designs where instruction efficiency and firmware integrity are prioritized.
Availability
W25Q64FWZEIG is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS ECUs, medical IoT sensors, smart home hubs, and consumer wearables requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for W25Q64FWZEIG 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 NOR/NAND flash, RAM, and mobile DRAM.
The W25Q series targets high-performance, low-voltage embedded applications demanding XIP capability, robust security, and flexible interface modes - designed specifically for resource-constrained microcontrollers in industrial, automotive, and IoT endpoints.
FAQ
What is the operating voltage range for the W25Q64FWZEIG?
The W25Q64FWZEIG operates from 1.65 V to 1.95 V. This narrow 1.8 V nominal range enables ultra-low-power operation in battery-powered and energy-harvesting systems. Operation outside this range may cause unreliable reads/writes or damage the device. Decoupling capacitance (≥1 µF ceramic) is required on the VCC pin to maintain stability during high-speed Quad SPI transfers.
How does the /HOLD pin function differ between Standard SPI and Quad SPI modes on the W25Q64FWZEIG?
In Standard SPI mode (QE = 0), pin 7 functions as active-low /HOLD to pause ongoing operations. In Quad SPI mode (QE = 1), the same pin becomes IO3 - a bidirectional data line - and /HOLD functionality is disabled. The W25Q64FWZEIG's HOLD/RST bit in Status Register-3 determines whether pin 7 acts as /HOLD or /RESET in Standard/Dual modes, but this selection has no effect when QE = 1.
Does the W25Q64FWZEIG support execute-in-place (XIP) operation, and what features enable it?
Yes, the W25Q64FWZEIG supports true XIP via Continuous Read Mode and QPI. Continuous Read reduces instruction overhead to just 8 clocks for address setup, while QPI cuts instruction fetch time from 8 to 2 clocks. Combined with 104 MHz Quad SPI clocking and 50 MB/s sustained read throughput, these features allow deterministic, low-latency code execution directly from flash - eliminating the need for RAM shadowing in many applications.
What security mechanisms are implemented in the W25Q64FWZEIG beyond basic write protection?
Beyond /WP pin and status register BP bits, the W25Q64FWZEIG includes three 256-byte security registers with OTP locking, a 64-bit unique serial number per die, JEDEC SFDP register for standardized parameter discovery, and individual sector/block lock/unlock instructions (36h/39h). These features collectively support secure boot, device authentication, and tamper-resistant firmware partitioning - critical for certified industrial and automotive deployments.
Can the W25Q64FWZEIG be used as a direct replacement for older W25Q64DV parts?
The W25Q64FWZEIG is not a pin-compatible or functional drop-in replacement for W25Q64DV. While both are 64 M-bit 1.8 V SPI flashes, the W25Q64FWZEIG introduces QPI mode, enhanced security registers, updated SFDP layout, and revised status register mapping (e.g., QE bit location differs). Migration requires firmware updates to handle QPI entry/exit, revised status register access, and validation of all security-related operations - especially if using OTP locks or individual sector protection.
W25Q64FWZEIG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- 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:
- 60µs, 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (8x6)
W25Q64FWZEIG FAQ
1.How can I place an order for W25Q64FWZEIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q64FWZEIG 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 W25Q64FWZEIG reliable?
The price and inventory of W25Q64FWZEIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q64FWZEIG is usually 5 days.
3.What payment methods are accepted for W25Q64FWZEIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q64FWZEIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q64FWZEIG?
W25Q64FWZEIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q64FWZEIG 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 W25Q64FWZEIG?
For technical support, including W25Q64FWZEIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q64FWZEIG requirements.
6.How does Aetrix verify that W25Q64FWZEIG is sourced from the original manufacturer or authorized distributors?
All W25Q64FWZEIG 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 W25Q64FWZEIG meets industry standards.
7.What is the process for return or replacement of W25Q64FWZEIG?
All W25Q64FWZEIG units undergo pre-shipment inspection (PSI). If there is an issue with W25Q64FWZEIG, 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 W25Q64FWZEIG part is unused and in its original packaging.
Return procedure for W25Q64FWZEIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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