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Datasheet
CAT24C128WI-GT3 – 128Kbit I2C EEPROM Memory IC | 1MHz SOIC-8 Package
The CAT24C128WI-GT3 from onsemi is a high-performance 128-Kbit (16,384×8-bit) serial EEPROM designed for reliable non-volatile data storage in industrial, automotive, and embedded applications. Utilizing the I2C-compatible serial interface, it supports Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) communication modes, allowing fast and efficient data transfers. With a 64-byte page write buffer, hardware write protection, and on-chip ECC (Error Correction Code), this EEPROM ensures data integrity and robustness in high-reliability environments. Operating across a 1.8 V to 5.5 V supply voltage range, the CAT24C128 provides flexibility and low power consumption suitable for energy-efficient systems.
Key Features

I2C Interface: Compatible with Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) I2C bus modes.
Memory Organization: 128 Kbit (16 Kbyte) organized as 16,384×8 bits for large data capacity.
Write Capability: 64-byte page write buffer for efficient and high-speed data programming.
Operating Voltage Range: 1.8 V to 5.5 V single-supply operation for low-power systems.
Write Protection: WP pin provides full memory write protection to prevent accidental data modification.
On-Chip ECC: Integrated Error Correction Code ensures high reliability and data accuracy.
Noise Immunity: Schmitt triggers and input filters on SCL and SDA lines minimize signal noise and glitches.

High Endurance & Retention:

1,000,000 program/erase cycles.

100 years of data retention.

Low Power CMOS Technology: Optimized for reduced active and standby current consumption.
Temperature Range: Supports industrial and extended temperature grades for harsh environments.
Environmental Compliance: Pb-free, halogen-free, BFR-free, and RoHS compliant.