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The W25X20CLSNIG is a 2M-bit Serial Flash Memory manufactured by Winbond.

Specifications:

• Memory Size: 2M-bit (256K x 8)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 2.7V – 3.6V
• Speed:
• Up to 104 MHz clock frequency
• Supports Standard/Dual/Quad SPI modes
• Sector Erase: 4KB sectors
• Block Erase: 32KB or 64KB blocks
• Chip Erase: Full memory erase
• Page Program: Up to 256 bytes per page
• Write Protection: Software & hardware protection
• Endurance: 100,000 program/erase cycles per sector
• Data Retention: 20 years
• Package: 8-pin SOIC (150mil)
• Operating Temperature: -40°C to +85°C

Descriptions & Features:

• High-Performance SPI Flash for embedded systems
• Low Power Consumption with deep power-down mode
• Flexible Erase & Program Capabilities (sector, block, or full chip)
• Security Features:
• Unique 64-bit ID for device identification
• Write protection via software (status register) or hardware (WP# pin)
• Reliable & Durable:
• ECC (Error Correction Code) for data integrity
• Industrial-grade temperature range
• Wide Compatibility: Works with standard SPI controllers

This flash memory is commonly used in consumer electronics, IoT devices, networking equipment, and embedded systems requiring reliable non-volatile storage.

*(Note: Always refer to the latest datasheet from Winbond for updated specifications.)*