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Winbond Electronics Corporation W25Q128JWEIM
- Part No.:
- W25Q128JWEIM
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25Q128JWEIM.pdf
- Description:
- IC FLASH 128MBIT SPI/QUAD 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,688
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Product details
Overview
W25Q128JWEIM from Winbond is a 128M-bit (16MB) serial NOR flash memory supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz clock frequency and 532MHz equivalent Quad I/O throughput. It features uniform 4KB sectors, 100K program-erase cycles, and operates from 1.7–1.95V across –40°C to +105°C for industrial-plus applications including boot code storage and XIP execution.
For engineers reviewing the W25Q128JWEIM datasheet, W25Q128JWEIM pinout, W25Q128JWEIM application, or W25Q128JWEIM equivalent, this device delivers high-speed, low-voltage, secure nonvolatile storage with flexible erase granularity, hardware write protection, and dual/quad I/O support for embedded microcontroller boot and firmware update systems.
Technical Context
The W25Q128JWEIM implements a quad-SPI interface requiring the non-volatile Quad Enable (QE) bit in Status Register-2 to be set to activate IO2 (/WP) and IO3 (/HOLD) as bidirectional data lines. Its architecture supports standard SPI Mode 0/3, dual-output reads (3Bh), and quad-I/O reads (EBh), enabling up to 66MB/s continuous transfer rates.
It integrates volatile/non-volatile status register bits for block/sector protection (BP2–BP0, TB, SEC, CMP), security registers with OTP locks, and a 64-bit unique ID. Erase operations include 4KB sector, 32KB/64KB block, and full-chip erase, with suspend/resume capability during active erase or program cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 128 M-bit (16 MB), organized as 65,536 × 256-byte pages |
| Supply Voltage | 1.7–1.95 V - enables ultra-low-power operation in battery-backed or energy-constrained systems |
| Operating Temperature | –40°C to +105°C - qualified for industrial-plus grade environments |
| SPI Clock Frequency | Up to 133 MHz (Quad I/O) - delivers 532 MHz effective bandwidth for fast code shadowing |
| Erase Endurance | 100,000 program-erase cycles per sector - ensures long-term reliability in firmware update partitions |
| Data Retention | 20+ years at +85°C - guarantees persistent storage integrity over product lifecycle |
| Interface Modes | Standard SPI (DI/DO), Dual SPI (IO0/IO1), Quad SPI (IO0–IO3) - selectable via QE bit and instruction set |
Pinout & Package
W25Q128JWEIM is supplied in an 8-pin WSON 6×5-mm package (Package Code P), with exposed pad for thermal dissipation and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable signal; places DO/IO pins in high-impedance state when deasserted |
| DO (IO1) | Serial Data Output / Bidirectional I/O | Outputs data in Standard SPI; serves as IO1 in Dual/Quad modes after QE=1 |
| /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware write lock for status register; becomes IO2 in Quad mode when QE=1 |
| GND | Ground Reference | Primary return path for all digital and power circuits; requires low-impedance connection |
| DI (IO0) | Serial Data Input / Bidirectional I/O | Accepts instructions/addresses in Standard SPI; serves as IO0 in Dual/Quad modes |
| CLK | Serial Clock Input | Edge-triggered timing reference for all SPI transfers; supports Mode 0 and Mode 3 |
| /HOLD (IO3) | Hold Input / Bidirectional I/O | Pauses ongoing read/write when asserted low; becomes IO3 in Quad mode when QE=1 |
| VCC | Power Supply | 1.7–1.95 V supply; must ramp monotonically during power-up to avoid spurious writes |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI with 133 MHz clock | Enables 66 MB/s sustained read throughput-critical for XIP execution without external RAM buffering |
| Uniform 4KB sector architecture | Allows fine-grained firmware partitioning (e.g., bootloader, app, config) with independent erase control |
| Erase/Program Suspend & Resume | Permits background interrupt handling during long erase cycles-essential for real-time system responsiveness |
| Hardware /WP and software block protection | Combines pin-level and register-level locking to prevent accidental corruption of critical boot sectors |
| 64-bit unique device ID | Supports secure device authentication and firmware binding in IoT edge nodes and certified platforms |
| 3×256-byte OTP-locked security registers | Stores immutable keys or calibration data that survives full chip erase and cannot be overwritten |
Applications
| Boot Code Storage | Firmware Over-the-Air (OTA) Updates |
|---|---|
Use Scenario: Storing primary bootloader and initial firmware image executed directly from flash on MCU power-up. IC Role / Device Role / Timing Role: Nonvolatile storage medium providing deterministic, low-latency instruction fetch via Quad SPI XIP mode. Use Value: Eliminates need for external RAM loading; reduces BOM cost and boot time by >30% vs. parallel flash. | Use Scenario: Hosting dual firmware images (active + standby) with atomic swap during wireless update cycles. IC Role / Device Role / Timing Role: High-endurance, sector-protected memory enabling safe in-field reprogramming without bricking. Use Value: 100K erase cycles and 4KB sector granularity allow ≥10,000 OTA updates over product lifetime. |
| Industrial HMI Configuration | Secure Edge Node Identity |
Use Scenario: Persisting display layouts, language packs, and calibration parameters in factory HMIs operating at +105°C. IC Role / Device Role / Timing Role: Temperature-hardened, low-voltage serial flash retaining user-specific settings across power cycles. Use Value: 20-year data retention at +85°C ensures configuration integrity over multi-decade equipment lifespan. | Use Scenario: Storing cryptographic keys and device identity certificates in smart sensors deployed in untrusted environments. IC Role / Device Role / Timing Role: Secure storage element with OTP-locked security registers and unique 64-bit ID for hardware-rooted trust. Use Value: Prevents key extraction or cloning; enables TLS mutual authentication and firmware signature verification. |
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 |
|---|---|---|---|
| MX25L12833FZC-10G | 3.3V supply, 104MHz max Quad SPI clock, no /RESET pin in 8-pin SOIC | Requires level-shifting for 1.8V systems; lacks hardware reset and industrial-plus temp rating | Select only if legacy 3.3V design exists and temperature range ≤+85°C suffices |
| S25FL128SAGMFI000 | 1.8V supply, 133MHz Quad SPI, includes dedicated /RESET pin in 16-pin SOIC variant | Offers pin-compatible /RESET but requires larger 16-pin footprint; higher active current (3mA vs. 1mA) | Prefer when hardware reset is mandatory and board layout accommodates SOIC-16 |
Compared with W25Q128JWEIM, MX25L12833FZC-10G demands voltage translation and lacks extended temperature support, while S25FL128SAGMFI000 adds /RESET functionality at the cost of higher power and larger package-making W25Q128JWEIM optimal for compact, low-power, high-temp industrial designs.
Availability
W25Q128JWEIM is available at Aetrix Electronics and suitable for industrial HMIs, edge AI inference modules, and automotive body control units requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial-plus grade qualification.
Supply support for W25Q128JWEIM 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 DRAM, mobile DRAM, and serial flash memory solutions since 1987.
The W25Q series targets high-performance, low-voltage embedded systems needing reliable, secure, and fast nonvolatile storage for boot, firmware, and configuration data in space-constrained industrial and automotive applications.
FAQ
What is the maximum supported Quad SPI clock frequency for W25Q128JWEIM?
The W25Q128JWEIM supports up to 133 MHz Quad SPI clock frequency, enabling a theoretical peak data rate of 532 Mbps (133 MHz × 4 lines). This is confirmed in the "Features" section of the official datasheet (Rev G, July 2021) and validated under AC Electrical Characteristics (Section 9.6). The actual achievable rate depends on PCB layout, drive strength settings (DRV1/DRV0), and host controller timing margins.
Does W25Q128JWEIM include a hardware reset pin?
No, W25Q128JWEIM does not include a dedicated hardware /RESET pin. The /HOLD pin (Pin 7) functions as /HOLD in Standard/Dual SPI and as IO3 in Quad SPI mode. Hardware reset is only available on SOIC-16 (Package Code F) and TFBGA (Package Codes B/C) variants-not on the WSON 6×5-mm W25Q128JWEIM. Reset must be performed via software sequence (66h + 99h).
How many program-erase cycles does W25Q128JWEIM guarantee per sector?
W25Q128JWEIM guarantees a minimum of 100,000 program-erase cycles per sector, as specified in the "Features" section (Rev G, p.4) and "Electrical Characteristics" (Section 9.4). This endurance applies uniformly across all 4KB sectors and is validated under industrial-plus grade conditions, making it suitable for frequent firmware update partitions.
What package type is used for W25Q128JWEIM?
W25Q128JWEIM uses an 8-pin WSON (Wafer-Level Small Outline No-lead) package measuring 6 mm × 5 mm (Package Code P), with an exposed thermal pad. This is explicitly defined in Section 10.1 and Figure 1b of the datasheet (Rev G), and distinguishes it from SOIC, TFBGA, and WLCSP variants of the same family.
Can W25Q128JWEIM execute code directly from flash (XIP)?
Yes, W25Q128JWEIM supports execute-in-place (XIP) operation using Fast Read Quad I/O (EBh) instructions. With Quad SPI enabled (QE=1), it delivers up to 66 MB/s continuous read throughput-sufficient for real-time XIP execution in Cortex-M and RISC-V microcontrollers without intermediate RAM buffering, as confirmed in Section 1 General Descriptions.
W25Q128JWEIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 128Mbit
- Memory Organization:
- 16M 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-WSON (8x6)
W25Q128JWEIM FAQ
1.How can I place an order for W25Q128JWEIM through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q128JWEIM 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 W25Q128JWEIM reliable?
The price and inventory of W25Q128JWEIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q128JWEIM is usually 5 days.
3.What payment methods are accepted for W25Q128JWEIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q128JWEIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q128JWEIM?
W25Q128JWEIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q128JWEIM 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 W25Q128JWEIM?
For technical support, including W25Q128JWEIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q128JWEIM requirements.
6.How does Aetrix verify that W25Q128JWEIM is sourced from the original manufacturer or authorized distributors?
All W25Q128JWEIM 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 W25Q128JWEIM meets industry standards.
7.What is the process for return or replacement of W25Q128JWEIM?
All W25Q128JWEIM units undergo pre-shipment inspection (PSI). If there is an issue with W25Q128JWEIM, 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 W25Q128JWEIM part is unused and in its original packaging.
Return procedure for W25Q128JWEIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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