W25Q128 Large Capacity Flash Storage Module

W25Q128 Large Capacity Flash Storage Module provides a robust and expansive external memory solution for embedded systems that require more storage than a standard microcontroller can offer internally. This high-performance module utilizes the Winbond W25Q128FV serial flash memory chip, delivering 128 Megabits (16 Megabytes) of non-volatile data storage through a high-speed Serial Peripheral Interface (SPI). Consequently, engineers can easily store large assets such as high-resolution graphics, audio files, or extensive data logs without exhausting system resources. The module supports Standard, Dual, and Quad SPI modes, which significantly increases data throughput for time-sensitive operations. Therefore, you should choose the W25Q128 module to enhance the capabilities of your Arduino, ESP8266, or STM32 projects where reliable and high-density memory is a critical requirement.

Key Features:

• High Storage Density: Offers a generous 128M-bit (16M-byte) capacity, organized into 65,536 programmable pages for versatile data management.
• High-Speed Data Transfer: Supports SPI clock frequencies up to 104 MHz, allowing for rapid read and write cycles essential for performance-heavy applications.
• Flexible Erase Architecture: Features uniform 4KB sectors and larger 32KB/64KB blocks, furthermore providing designers with granular control over memory clearing.
• Low Power Consumption: Consumes minimal current during active operation and includes a dedicated power-down mode to extend battery life in portable devices.
• Wide Compatibility: Works seamlessly with a broad range of microcontrollers and development platforms via the standard 4-pin SPI interface.

Technical Specifications:

• Memory Capacity: 128 Megabits (16 Megabytes)
• Operating Voltage: 2.7 V to 3.6 V
• Interface Type: Standard SPI, Dual SPI, and Quad SPI
• Clock Frequency: ≤ 104 MHz
• Data Retention: ≥ 20 Years
• Write Cycles: ≈ 100,000 Erase/Program cycles per sector
• Operating Temperature: −40°C to +85°C

Mechanical Specifications:

• Component IC: Winbond W25Q128FV Serial Flash
• PCB Material: High-quality FR-4 fiber glass
• Mounting: 2.54 mm (0.1 inch) standard pin headers
• Finish: Lead-free, RoHS compliant construction

Dimensions:

• Board Length: ≈ 14 mm
• Board Width: ≈ 15 mm
• Weight: ≈ 2.5 g
• Pin Pitch: 2.54 mm

Pinout and Wiring:

• VCC: Connect to 3.3 V DC power supply.
• GND: Connect to the common ground of the circuit.
• CS (Chip Select): Connect to the microcontroller’s SPI SS/CS pin to enable the device.
• DO (MISO): Data Output pin for sending data back to the microcontroller.
• WP (Write Protect): Connect to VCC for normal operation or GND to protect memory from writing.
• CLK (SCK): Connect to the SPI Clock pin of the host controller.
• DI (MOSI): Data Input pin for receiving commands and data from the microcontroller.
• HOLD: Connect to VCC to prevent pausing or GND to pause the SPI communication.

Datasheet Reference:

• Download Winbond W25Q128FV Flash Memory Datasheet

Commonly Used in:

• Microcontroller Expansion: Expanding the limited flash memory of boards like the Arduino Uno or Nano.
• Asset Storage: Holding UI elements, bitmaps, and fonts for TFT and OLED display projects.
• Firmware Storage: Acting as the primary boot or backup memory for ESP32 and ESP8266 based IoT devices.

Applications:

• Data Logging: Recording sensor data over long periods where internal RAM or EEPROM is insufficient.
• Audio Playback: Storing voice prompts and sound effects for interactive electronic toys or industrial alerts.
• Web Server Hosting: Keeping HTML, CSS, and JS files for embedded web interfaces on network-connected modules.
• Configuration Backup: Storing complex user settings and calibration data reliably.

Equivalent Models:

• GD25Q128 (GigaDevice): A functionally compatible alternative that provides similar density and SPI performance.
• MX25L128 (Macronix): However, verify timing specifications as they may vary slightly during high-speed Quad SPI mode.
• W25Q64: A lower capacity (64M-bit) version from the same series for less demanding storage needs.

Package Includes:

• 1 x W25Q128 Large Capacity Flash Storage Module