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Winbond Electronics Corporation W25Q128JWSIM
- Part No.:
- W25Q128JWSIM
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q128JWSIM.pdf
- Description:
- IC FLASH 128MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
W25Q128JWSIM from Winbond is a 128M-bit (16MB) serial NOR flash memory supporting standard, dual, and quad SPI interfaces with 1.7–1.95V supply, -40°C to +105°C industrial-plus operation, 133MHz quad I/O clock, and uniform 4KB sector erase architecture. It serves as non-volatile code/data storage in microcontroller boot systems, firmware update storage, and XIP-capable embedded applications.
For engineers reviewing the W25Q128JWSIM datasheet, W25Q128JWSIM pinout, W25Q128JWSIM application, or W25Q128JWSIM equivalent, key selection criteria include quad I/O timing compliance, /WP and /HOLD functional mapping in SOIC-208-mil package, 4KB sector granularity for parameter logging, and hardware reset availability (not present in this variant).
Technical Context
The W25Q128JWSIM implements a SPI-compatible serial interface with Mode 0 and Mode 3 clock polarity support, enabling interoperability with diverse host controllers. Its internal architecture includes 65,536 × 256-byte programmable pages, 4,096 erasable 4KB sectors, and 256 erasable 64KB blocks - all accessible via standardized instruction set including Fast Read Quad I/O (EBh) and Page Program (02h).
It features volatile and non-volatile status register bits (e.g., QE, BP2–BP0, TB, SEC, CMP, SRP), enabling flexible protection schemes: top/bottom array lock, complement protection, individual sector locking, and OTP-secured security registers. Erase/program suspend/resume functionality supports real-time interrupt handling during background operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 128 M-bit (16 MB) - supports full firmware images for mid-tier MCUs without external memory expansion. |
| Supply Voltage | 1.7 V to 1.95 V - compatible with 1.8V logic domains and low-power industrial SoCs. |
| Operating Temperature | -40°C to +105°C - qualified for industrial-plus environments including automotive infotainment and motor control. |
| Quad SPI Clock Rate | Up to 133 MHz - enables 532 Mbps effective throughput using Fast Read Quad I/O (EBh), exceeding parallel NOR performance. |
| Erase Granularity | Uniform 4 KB sectors - allows fine-grained firmware parameter storage and OTA update partitioning. |
| Endurance & Retention | 100,000 program/erase cycles; >20 years data retention - suitable for field-upgradable systems with frequent configuration writes. |
| Power Consumption | 1 mA active current (typ.), <1 µA power-down - reduces standby power in battery-backed or energy-harvested devices. |
Pinout & Package
W25Q128JWSIM uses the 8-pin SOIC 208-mil (Package Code S) with no dedicated /RESET pin; /HOLD function shares Pin 7 and operates only in Standard/Dual SPI mode. Quad SPI requires QE bit set, repurposing /WP (Pin 3) as IO2 and /HOLD (Pin 7) as IO3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO and low-power standby when deasserted. |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional IO1 in Dual/Quad modes after QE=1. |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware write lock for status register when low; becomes IO2 in Quad SPI (QE=1). |
| 4 GND | Ground Reference | Primary return path for VCC and I/O signals; must be low-impedance for noise immunity. |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional IO0 in Dual/Quad modes after QE=1. |
| 6 CLK | Serial Clock Input | Edge-triggered timing source; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). |
| 7 /HOLD (IO3) | Hold Input / Bidirectional I/O | Pauses ongoing SPI transfer when low; becomes IO3 in Quad SPI (QE=1); not available as /HOLD in that mode. |
| 8 VCC | Power Supply | 1.7–1.95V core supply; decoupling capacitor required per layout guidelines to maintain AC stability. |
Key Features
| Feature | Design Value |
|---|---|
| Quad Enable (QE) bit | Non-volatile Status Register-2 bit enabling IO2/IO3 use - required to activate full quad I/O mode without pin remapping. |
| Erase/Program Suspend | Supports 75h/7Ah instructions - allows host to pause background erase/program and service time-critical interrupts. |
| 64-bit Unique ID | Factory-programmed read-only identifier - enables secure device authentication and firmware binding in IoT edge nodes. |
| Security Registers | 3 × 256-byte OTP-lockable regions - stores cryptographic keys or calibration data immune to field reprogramming. |
| SFDP Register | Standard Flash Discovery Parameter support - enables automatic host driver configuration without hard-coded timing parameters. |
Applications
| Industrial Firmware Storage | Secure Boot Configuration |
|---|---|
Use Scenario: Storing MCU bootloader and application firmware in factory-deployed PLCs requiring field updates over CAN or Ethernet. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable quad SPI interface enabling direct execution from flash. Use Value: 4KB sector erase allows atomic firmware patching; 100K endurance ensures 10+ years of field update cycles at monthly intervals. | Use Scenario: Holding immutable root-of-trust keys and signed boot manifest in medical imaging equipment. IC Role / Device Role / Timing Role: Secure parameter vault leveraging OTP-locked security registers and hardware write protect (/WP pin). Use Value: Prevents unauthorized key extraction or tampering during power cycling; 64-bit UID binds firmware to specific hardware unit. |
| Automotive Infotainment | Smart Energy Metering |
Use Scenario: Storing UI assets, voice prompts, and map tiles in head-unit systems operating across -40°C to +105°C ambient. IC Role / Device Role / Timing Role: High-speed serial flash with industrial-plus temperature rating and fast read quad I/O for low-latency asset streaming. Use Value: 133MHz quad clock delivers 532 Mbps burst reads - reduces UI load latency by >60% vs. standard SPI alternatives. | Use Scenario: Logging tariff schedules, meter calibration data, and tamper-event timestamps in utility-grade smart meters. IC Role / Device Role / Timing Role: Parameter storage with sector-level write protection and suspend/resume for deterministic logging during power interruptions. Use Value: Uniform 4KB sectors allow isolated logging partitions; erase/program suspend prevents data loss during brown-out events. |
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 | 3V supply (2.7–3.6V), no /HOLD pin in 8-pin SOIC, max 104MHz quad clock | Requires level-shifting for 1.8V hosts; lacks suspend/resume and SFDP support | Select only if system uses 3.3V I/O and does not require quad I/O >104MHz or dynamic timing discovery. |
| S25FL128SAGMFI000 | 1.7–2.0V supply, 133MHz quad clock, integrated ECC, 10-year data retention | Includes on-die error correction and longer retention but higher cost and larger footprint (16-pin SOIC) | Prefer when bit-error resilience is critical and PCB layout accommodates 16-pin package with dedicated /RESET. |
Compared with MX25L12833FZC-10G and S25FL128SAGMFI000, W25Q128JWSIM offers optimal balance of 1.8V compatibility, 133MHz quad performance, suspend/resume capability, and compact 8-pin SOIC packaging - making it ideal for space-constrained industrial controllers where firmware update reliability and low standby power are prioritized.
Availability
W25Q128JWSIM is available at Aetrix Electronics and suitable for industrial firmware storage, secure boot configuration, and automotive infotainment systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for W25Q128JWSIM 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 serial flash, RAM, and mobile DRAM, serving industrial, automotive, and consumer markets.
The W25Q series targets high-performance, low-voltage serial NOR flash applications demanding XIP capability, robust data integrity, and flexible protection - specifically engineered for code storage and parameter logging in resource-constrained embedded systems.
FAQ
Does W25Q128JWSIM support hardware reset via a dedicated /RESET pin?
No, W25Q128JWSIM uses the 8-pin SOIC 208-mil package (Package Code S), which does not include a dedicated /RESET pin. The /HOLD pin (Pin 7) serves dual function as IO3 in Quad SPI mode but cannot perform hardware reset. Hardware reset is only available on SOIC-16 and TFBGA variants of the W25Q128JW family. For W25Q128JWSIM, software reset via 66h/99h instruction sequence is the only reset method.
What is the maximum clock frequency supported by W25Q128JWSIM in Quad SPI mode?
W25Q128JWSIM supports up to 133 MHz clock frequency in Quad SPI mode, delivering an effective data rate of 532 Mbps using Fast Read Quad I/O (EBh) instruction. This timing is validated under industrial-plus conditions (-40°C to +105°C) with 1.7–1.95V supply and meets AC electrical specifications in the official datasheet Revision G. Exceeding 133 MHz may result in timing violations or read errors.
How is write protection implemented on W25Q128JWSIM?
W25Q128JWSIM implements multi-layer write protection: hardware-level via the /WP pin (active-low, protects status register when asserted), and software-level via status register bits (BP2–BP0, TB, SEC, CMP, SRP). These bits enable sector-, block-, or full-array protection with volatile/non-volatile persistence. The /WP pin remains functional in Standard/Dual SPI; in Quad SPI (QE=1), it becomes IO2 and hardware protection must be managed exclusively through status register settings.
Can W25Q128JWSIM be used for execute-in-place (XIP) applications?
Yes, W25Q128JWSIM supports execute-in-place (XIP) operation via its Dual and Quad SPI interfaces. With Fast Read Dual I/O (BBh) or Fast Read Quad I/O (EBh) instructions, the device delivers sustained high-speed code fetches directly to the host processor's instruction pipeline. Its 4KB uniform sector architecture and 133MHz quad clock enable low-latency, deterministic XIP performance suitable for real-time embedded applications without external RAM buffering.
What package type and pin count does W25Q128JWSIM use?
W25Q128JWSIM uses the 8-pin SOIC 208-mil package (Package Code S), with standard SPI pinout: /CS (Pin 1), DO (Pin 2), /WP (Pin 3), GND (Pin 4), DI (Pin 5), CLK (Pin 6), /HOLD (Pin 7), and VCC (Pin 8). This variant does not include a dedicated /RESET pin, distinguishing it from SOIC-16 and TFBGA versions of the W25Q128JW family.
W25Q128JWSIM 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:
- 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-SOIC
W25Q128JWSIM FAQ
1.How can I place an order for W25Q128JWSIM through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q128JWSIM 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 W25Q128JWSIM reliable?
The price and inventory of W25Q128JWSIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q128JWSIM is usually 5 days.
3.What payment methods are accepted for W25Q128JWSIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q128JWSIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q128JWSIM?
W25Q128JWSIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q128JWSIM 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 W25Q128JWSIM?
For technical support, including W25Q128JWSIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q128JWSIM requirements.
6.How does Aetrix verify that W25Q128JWSIM is sourced from the original manufacturer or authorized distributors?
All W25Q128JWSIM 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 W25Q128JWSIM meets industry standards.
7.What is the process for return or replacement of W25Q128JWSIM?
All W25Q128JWSIM units undergo pre-shipment inspection (PSI). If there is an issue with W25Q128JWSIM, 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 W25Q128JWSIM part is unused and in its original packaging.
Return procedure for W25Q128JWSIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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