W25Q128 Large Capacity Flash Storage Module

W25Q128 Large Capacity Flash Storage Module delivers 128 Mbit (16 MB) of reliable SPI-based non-volatile memory. Designers use it to expand storage in microcontroller, IoT, and embedded applications where fast read/write and long data retention are required.

Key Features:

• Large Capacity: Offers 128 Mbit (16 MB) flash memory for code and data storage.
• High-Speed SPI Interface: Operates up to 104 MHz for fast data transfers.
• Dual/Quad SPI Modes: Supports standard, dual, and quad SPI instructions for enhanced throughput.
• Low Power Consumption: Runs efficiently in active mode and features ultra-low standby current.
• Data Retention: Retains stored data for more than 20 years.
• Endurance: Provides up to 100,000 program/erase cycles per sector.

Technical Specifications:

• Memory Size: 128 Mbit (16 MB)
• Interface: SPI, Dual-SPI, Quad-SPI
• Operating Voltage: 2.7 V to 3.6 V
• Clock Frequency: Up to 104 MHz
• Page Size: 256 bytes
• Sector Size: 4 KB sectors with block erase options
• Operating Temperature: −40 °C to +85 °C

Mechanical Specifications:

• Module Type: Breakout board with W25Q128 flash IC
• Mounting: Standard pin headers for breadboards or soldering
• PCB Material: FR4 with protective solder mask

Dimensions:

• PCB Length: Approx. 25 mm
• PCB Width: Approx. 12 mm
• Pin Pitch: Standard 2.54 mm header spacing

Pinout and Wiring:

• VCC: Power supply (2.7–3.6 V)
• GND: Ground
• CS: Chip Select, active low
• CLK: Serial Clock Input
• DI (MOSI): Master Out Slave In
• DO (MISO): Master In Slave Out
• WP: Write Protect (active low, optional)
• HOLD: Pause serial communication (active low, optional)

Datasheet Reference:

• Download the W25Q128 datasheet from Winbond official site for detailed timing, command set, and electrical parameters.

Applications:

• Microcontroller Storage: Add external flash memory for firmware and data logging.
• IoT Devices: Enable fast storage expansion in low-power connected systems.
• Consumer Electronics: Provide additional storage in smart devices and handheld systems.
• Data Logging Modules: Store logs, sensor data, and user settings reliably.
• Embedded Systems: Use for bootloaders, code shadowing, and firmware upgrades.

Equivalent Models:

• W25Q64: 64 Mbit capacity variant with same interface.
• W25Q256: Higher 256 Mbit capacity for larger storage needs.
• AT25DF128A: Alternative 128 Mbit SPI flash memory.

Package Includes:

• 1 x W25Q128 Large Capacity Flash Storage Module