W25Q128JVSIQ：High-Performance 128Mbit SPI NOR Flash for Embedded and IoT Applications

The W25Q128JVSIQ is a high-performance, low-power SPI NOR Flash memory chip launched by Winbond (Hua Bang Electronics), with a capacity of 128 Mbit (16MB). With its support for standard SPI, Dual SPI, Quad SPI and QPI interfaces, as well as excellent read and write speeds and data retention characteristics, the W25Q128JVSIQ is widely used in embedded systems, IoT devices, consumer electronics, industrial control and many other scenarios.

FEATURES

New Family of SpiFlash Memories

–W25Q128JV: 128M-bit / 16M-byte

–Standard SPI: CLK, /CS, DI, DO

–Dual SPI: CLK, /CS, IO0, IO1

–Quad SPI: CLK, /CS, IO0, IO1, IO2, IO3

–Software & Hardware Reset(1)·

Highest Performance Serial Flash

–133MHz Single, Dual/Quad SPI clocks

–266/532MHz equivalent Dual/Quad SPI

–66MB/S continuous data transfer rate

–Min. 100K Program-Erase cycles per sector

–More than 20-year data retention·

Efficient"Continuous Read"

–Continuous Read with 8/16/32/64-Byte Wrap

–As few as 8 clocks to address memory

–Allows true XIP (execute in place) operation·

Low Power, Wide Temperature Range

–Single 2.7 to 3.6V supply

–<1µA Power-down (typ.)

–-40°C to +85°C operating range

–-40°C to +105°C operating range

Flexible Architecture with 4KB sectors

–Uniform Sector/Block Erase (4K/32K/64K-Byte)

–Program 1 to 256 byte per programmable page

–Erase/Program Suspend & Resume·

Advanced Security Features

–Software and Hardware Write-Protect

–Power Supply Lock-Down

–Special OTP protection

–Top/Bottom, Complement array protection

–Individual Block/Sector array protection

–64-Bit Unique ID for each device

–Discoverable Parameters (SFDP) Register

–3X256-Bytes Security Registers with OTP locks

–Volatile & Non-volatile Status Register Bits·

Space Efficient Packaging

–8-pin SOIC 208-mil

–16-pin SOIC 300-mil (additional /RESET pin)

–8-pad WSON 6x5-mm / 8x6-mm

–24-ball TFBGA 8x6-mm (6x4/5x5 ball array)

–24-ball WLCSP

–Contact Winbond for KGD and other options

Interface and Protocol Support

The W25Q128JVSIQ adopts an advanced multi-mode SPI interface architecture and supports:

Standard SPI (Single Wire Data Transmission)

Dual SPI (Dual-Channel High-Speed Transmission)

Quad SPI (Four-wire Ultra-High-Speed Transmission, with higher bandwidth)

QPI (Quad Peripheral Interface)

Application

1. Embedded System Firmware Storage

W25Q128JVSIQ is widely used in embedded systems for storing bootloaders, main firmware, configuration parameters, and calibration data. It is ideal for MCUs (e.g., STM32, ESP32, GD32) that require external Flash memory.

Example: An STM32F103-based system loads the main firmware via SPI, ideal for products with OTA upgrade requirements.

Advantage: Quad SPI support significantly improves firmware read speeds, shortening boot time.

2. IoT Devices

In smart home, wearables, and sensor node applications, this chip provides sufficient space to store multilingual UI resources, sensor history data, device configurations, and OTA images.

Example: A smart door lock uses it to store fingerprint templates, access logs, and voice prompt files.

Advantage: Compact package, low power, high reliability - perfect for battery-powered devices.

3. Consumer Electronics

Used in TV boxes, Bluetooth speakers, game consoles, educational devices, and remote controllers for storing image/audio resources, user data, or firmware.

Example: A portable Bluetooth speaker stores sound profiles and audio files for fast loading and firmware upgrades.

Advantage: Supports various erase sizes (4KB/32KB/64KB) for flexible resource partitioning and quick updates.

4. Industrial Automation & Control Systems

Commonly used in PLCs, HMIs, inverters, and smart meters for data logging, configuration storage, and on-site firmware updates.

Example: An industrial temperature controller periodically logs data to Flash for later export.

Advantage: Industrial-grade temperature support (-40°C to +85°C) ensures stable operation in harsh conditions.

5. Automotive Electronics (Non-critical Systems)

Although not AEC-Q100 certified, it is still used in non-critical automotive modules like infotainment, seat adjustment, or control panels.

Example: Stores UI animations, voice data, and settings in an infotainment system.

Advantage: 20-year data retention ensures long-term stability for user configuration storage.

Storage and Performance

Storage Capacity: 128 Mbit (16 M × 8)

Interface Type: Supports SPI, dual SPI, Quad-SPI, even QPI mode, with the maximum clock frequency reaching 133 MHz

Operating Voltage: 2.7 - 3.6 V, commonly used in 3.3 V systems

Operating Temperature: -40 °C to +85 °C Write cycle: The typical time for a page write operation is approximately 3 ms.

Usage Suggestions

Please ensure that the SPI interface configuration is compatible with the controller (such as timing and CS polarity)

If using Quad-SPI, make sure the system supports the relevant mode in advance.

Pay attention to power supply and signal integrity, and ensure stable power supply and matching impedance of the interface lines.

Conclusion

The W25Q128JVSIQ is a SPI Flash memory chip that combines high capacity, high-speed communication and high reliability. It is particularly suitable for embedded devices that have requirements for startup speed, storage stability and compact packaging. Thanks to Winbond's manufacturing advantages and extensive compatibility ecosystem, this chip performs exceptionally well in the fields of consumer electronics, industrial control and the Internet of Things.