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The CAT24C128WI is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by ON Semiconductor. Below are its key specifications, descriptions, and features:

Specifications:

• Memory Size: 128 Kbit (16 K × 8 bits)
• Interface: I²C (Two-Wire Serial Interface)
• Supply Voltage: 1.7V to 5.5V (Wide Voltage Range)
• Operating Temperature Range: -40°C to +85°C
• Write Cycle Time: 5 ms (max)
• Endurance: 1,000,000 Write Cycles
• Data Retention: 100 Years
• Package: 8-lead SOIC (150 mil)

Descriptions:

• The CAT24C128WI is a low-power, high-performance EEPROM designed for applications requiring reliable non-volatile memory storage.
• It supports I²C communication with clock frequencies up to 400 kHz (Fast Mode) and 1 MHz (Fast Mode Plus).
• Features software write protection and a built-in write protect pin for enhanced data security.
• Suitable for industrial, automotive, and consumer electronics applications.

Features:

• Low-Power Consumption:
• Active Read Current: 1 mA (typical)
• Standby Current: 1 µA (typical)
• Page Write Buffer: 64 bytes
• Hardware Write Protection (WP Pin)
• Schmitt Trigger Inputs for Noise Suppression
• ESD Protection: ±4000V (HBM)
• AEC-Q100 Qualified (for Automotive Applications)

This EEPROM is ideal for applications requiring small footprint, high reliability, and low-power operation, such as smart meters, IoT devices, and embedded systems.

For detailed electrical characteristics and timing diagrams, refer to the official ON Semiconductor datasheet.