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Winbond Electronics Corporation W25Q64JWSSIM
- Part No.:
- W25Q64JWSSIM
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q64JWSSIM.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,157
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Product details
Overview
W25Q64JWSSIM from Winbond is a 1.8V, 64M-bit serial flash memory supporting Dual/Quad SPI, QPI, and DTR read modes. It delivers up to 133MHz Quad I/O clocking, 66MB/s continuous data transfer, and features uniform 4KB sector erase, 100K program-erase cycles, and 20-year data retention. It serves as nonvolatile storage for code execution (XIP), firmware updates, and parameter logging in space-constrained embedded systems.
For engineers reviewing the W25Q64JWSSIM datasheet, W25Q64JWSSIM pinout, W25Q64JWSSIM application, or W25Q64JWSSIM equivalent, key selection considerations include its 1.7–1.95V supply range, quad-enable status register configuration, /HOLD and /WP dual-function pins in standard mode, and compatibility with JEDEC SFDP, 64-bit UID, and four 256-byte security registers.
Technical Context
The W25Q64JWSSIM implements a flexible SPI-compatible interface with configurable operation modes: Standard (4-wire), Dual (2 I/O lines), Quad (4 I/O lines), and QPI (4-line instruction + data). Its architecture supports both volatile and non-volatile status register bits-including Quad Enable (QE), Block Protect (BP2–BP0), and HOLD/RESET function select-enabling runtime reconfiguration of pin roles and memory protection granularity.
It integrates hardware-level security features including OTP-locked security registers, top/bottom/complement array protection, and programmable output driver strength (DRV1/DRV0). The device supports Erase/Program Suspend & Resume, enabling concurrent background operations without interrupting host communication-critical for real-time firmware update scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 M-bit (8 MB), organized as 32,768 × 256-byte pages |
| Supply Voltage | 1.7–1.95 V - enables low-power operation in battery-backed or energy-efficient designs |
| Max Clock Frequency | 133 MHz Quad I/O - achieves 532 Mbps effective throughput (133 × 4) for XIP or high-speed boot loading |
| Erase Granularity | 4 KB sectors (1,024 total), 32 KB blocks (256), 64 KB blocks (128) - supports fine-grained firmware partitioning |
| Endurance & Retention | 100,000 program-erase cycles; >20 years data retention at 25°C - suitable for field-upgradable systems |
| Interface Modes | Standard/Dual/Quad SPI, QPI, and DTR Read - reduces instruction overhead and improves bandwidth efficiency |
| Security Features | 64-bit unique ID, SFDP register, 3×256-byte OTP-lockable security registers - enables secure boot and device authentication |
Pinout & Package
W25Q64JWSSIM is supplied in an 8-pin SOIC 208-mil package (Package Code SS), with pin 1 marked by a notch or dot. All pins are surface-mount compatible and support standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable; places DO in high-impedance state when deasserted, reducing bus contention |
| DO (IO1) | Data Output / Bidirectional I/O1 | Unidirectional output in Standard SPI; becomes bidirectional I/O1 in Dual/Quad modes when QE=1 |
| /WP (IO2) | Write Protect Input / Bidirectional I/O2 | Hardware write lock for status register; repurposed as IO2 in Quad mode when QE=1 |
| GND | Ground Reference | Primary return path for all I/O and core logic; requires low-impedance PCB connection |
| DI (IO0) | Data Input / Bidirectional I/O0 | Unidirectional input in Standard SPI; becomes bidirectional I/O0 in Dual/Quad modes when QE=1 |
| CLK | Serial Clock Input | Synchronizes all SPI transfers; supports Mode 0 and Mode 3; max 133 MHz in Quad I/O |
| /HOLD or /RESET (IO3) | Hold or Reset Input / Bidirectional I/O3 | Pauses ongoing transfers when active low; functions as /RESET only in TFBGA/SOIC16 packages - not available on SOIC8 |
| VCC | Power Supply | 1.7–1.95 V core supply; decoupling capacitor required per datasheet layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Quad Peripheral Interface (QPI) | Reduces instruction latency from 8 clocks to 2 clocks per command, enabling faster initialization and tighter timing margins |
| Erase/Program Suspend & Resume | Allows host to pause background erase/program operations and service higher-priority interrupts without data loss |
| Read Command Bypass with Wrap | Eliminates repeated address transmission for sequential reads, improving burst throughput in streaming applications |
| Volatile & Non-Volatile Status Register Bits | Enables persistent memory protection settings (e.g., BP bits) while allowing runtime override via volatile latch (WEL) |
| JEDEC SFDP Support | Provides standardized, discoverable parameter table for automatic driver configuration across host platforms |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in extended temperature environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP capability and hardware write protection for safe over-the-air updates. Use Value: 4KB sector erase enables atomic firmware patching; 100K endurance ensures reliability over 10+ years of field operation. | Use Scenario: Hosting boot code and sensor calibration data for radar/EPS ECUs requiring fast startup and tamper resistance. IC Role / Device Role / Timing Role: Primary boot memory accessed via Quad SPI at 133MHz to meet ASIL-B boot time requirements. Use Value: 66MB/s sustained read rate reduces boot latency; 64-bit UID and security registers support secure boot chain validation. |
| Medical IoT Sensor Node | Consumer Smart Home Hub |
Use Scenario: Logging patient vital sign history and storing regulatory-compliant firmware in battery-powered wearable monitors. IC Role / Device Role / Timing Role: Low-power data logger with <0.1µA deep power-down current and secure parameter storage. Use Value: 1.8V operation extends battery life; OTP-locked security registers prevent unauthorized calibration data modification. | Use Scenario: Holding Wi-Fi stack binaries, voice model assets, and user preference data in always-on smart speakers and hubs. IC Role / Device Role / Timing Role: High-density, pin-efficient storage interfaced via QPI to minimize MCU GPIO usage and PCB footprint. Use Value: QPI mode cuts instruction overhead by 75%, freeing CPU cycles for real-time audio processing tasks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L6433FZNI-10G | 3.3V supply, no DTR support, 80MHz max Quad SPI clock, lacks SFDP and security registers | Requires level-shifting in 1.8V systems; unsuitable for secure boot or high-throughput XIP | Select only if legacy 3.3V design and lower cost outweigh performance/security trade-offs |
| IS25LP064A-JBLE | 1.8V supply, supports DTR and QPI, but limited to 80MHz Quad SPI and no OTP security registers | Compatible voltage and interface subset, but lacks 64-bit UID and programmable driver strength | Acceptable for cost-sensitive consumer applications where full W25Q64JWSSIM feature set is unused |
Compared with MX25L6433FZNI-10G and IS25LP064A-JBLE, the W25Q64JWSSIM provides superior throughput (133MHz vs ≤80MHz), integrated security primitives (OTP locks, UID), and standardized configurability (SFDP), making it optimal for next-generation industrial and automotive firmware storage where speed, longevity, and trust are critical.
Availability
W25Q64JWSSIM is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical IoT sensor node applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for W25Q64JWSSIM 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, SRAM, and mobile DRAM.
The W25Q series targets high-performance, low-voltage embedded systems requiring robust code storage, secure firmware updates, and flexible interface options-designed specifically for XIP, boot, and data logging in resource-constrained environments.
FAQ
What is the maximum Quad SPI clock frequency supported by the W25Q64JWSSIM?
The W25Q64JWSSIM supports up to 133 MHz Quad SPI clock frequency, enabling a theoretical peak data rate of 532 Mbps (133 MHz × 4 lines). This specification is validated under 1.7–1.95 V supply and -40°C to +85°C operating conditions per the official datasheet. The W25Q64JWSSIM achieves this using optimized internal timing and DTR-capable I/O drivers, distinguishing it from earlier 80 MHz-class serial flash devices.
Does the W25Q64JWSSIM support hardware reset functionality on the SOIC-8 package?
No, the W25Q64JWSSIM does not provide a dedicated hardware /RESET pin in the SOIC-8 (SS) package. The /HOLD pin (Pin 7) can be configured as /RESET only in TFBGA or SOIC-16 packages. In the W25Q64JWSSIM SOIC-8 variant, /HOLD remains functional for pausing transfers, and software reset (66h + 99h) must be used instead of hardware reset.
How is Quad SPI mode enabled on the W25Q64JWSSIM?
Quad SPI mode on the W25Q64JWSSIM is enabled by setting the Quad Enable (QE) bit in Status Register-2 (SR2) using the Write Status Register-2 (31h) instruction. Once QE = 1, the /WP and /HOLD pins become IO2 and IO3 respectively. This configuration is non-volatile unless overwritten, and must be verified before issuing Quad I/O commands like Fast Read Quad I/O (EBh).
What security features are implemented in the W25Q64JWSSIM?
The W25Q64JWSSIM includes multiple hardware-enforced security features: a factory-programmed 64-bit unique ID, three 256-byte security registers with OTP locking, JEDEC SFDP for standardized parameter discovery, top/bottom/complement memory protection, and individual sector/block lock/unlock instructions (36h/39h/3Dh). These features collectively support secure boot, anti-cloning, and firmware integrity verification in certified systems.
Can the W25Q64JWSSIM be used for Execute-in-Place (XIP) applications?
Yes, the W25Q64JWSSIM is explicitly designed for Execute-in-Place (XIP) operation. Its high-speed Quad SPI and QPI interfaces, combined with DTR read support and low-latency command bypass, enable deterministic instruction fetch directly from flash. The device's 4KB uniform sector architecture and Erase/Program Suspend capability further ensure reliable XIP during concurrent firmware updates without system interruption.
W25Q64JWSSIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- -
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q64JWSSIM FAQ
1.How can I place an order for W25Q64JWSSIM through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q64JWSSIM 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 W25Q64JWSSIM reliable?
The price and inventory of W25Q64JWSSIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q64JWSSIM is usually 5 days.
3.What payment methods are accepted for W25Q64JWSSIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q64JWSSIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q64JWSSIM?
W25Q64JWSSIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q64JWSSIM 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 W25Q64JWSSIM?
For technical support, including W25Q64JWSSIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q64JWSSIM requirements.
6.How does Aetrix verify that W25Q64JWSSIM is sourced from the original manufacturer or authorized distributors?
All W25Q64JWSSIM 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 W25Q64JWSSIM meets industry standards.
7.What is the process for return or replacement of W25Q64JWSSIM?
All W25Q64JWSSIM units undergo pre-shipment inspection (PSI). If there is an issue with W25Q64JWSSIM, 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 W25Q64JWSSIM part is unused and in its original packaging.
Return procedure for W25Q64JWSSIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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