CAT24WC05PI(E2PROM)

Updated: 2026-10-09

Overview

The CAT24WC05PI is a 5Kbit (512x8) serial EEPROM memory device designed for low-power, high-reliability applications. It uses the I2C protocol for communication, making it compatible with a wide range of microcontrollers and digital systems. This EEPROM is manufactured using advanced CMOS technology, offering byte-write and page-write capabilities. It's commonly used in consumer electronics, industrial equipment, and automotive systems where non-volatile data storage is required.

Structure and Working Principle

The CAT24WC05PI consists of a memory array organized as 512x8 bits, address registers, and I2C interface circuitry. It operates on a simple two-wire serial interface (SCL and SDA) for communication with host controllers. The device uses floating-gate transistors to store data persistently. During write operations, charge is trapped in the floating gate to represent binary data. Read operations are non-destructive and can be performed indefinitely without wearing out the memory cells.

Key Features

This EEPROM offers several notable features including a 400kHz I2C interface, low standby current (typically 1μA), and a wide voltage range (1.7V to 5.5V) operation. It has built-in write protection and supports both hardware and software write protection. The device is guaranteed to endure at least 1 million write cycles per byte and has a data retention period of 100 years. It's available in various package options including PDIP, SOIC, and TSSOP for different application requirements.

Application Areas

The CAT24WC05PI finds applications across multiple industries. It's commonly used in consumer electronics such as smart TVs, set-top boxes, and audio equipment for storing configuration data. Industrial applications include automation systems, instrumentation, and embedded control systems where parameter storage is needed. The automotive industry also utilizes these EEPROMs for ECU parameter storage and module configuration.

Maintenance and Precautions

When working with the CAT24WC05PI, proper ESD precautions should be observed as with all CMOS devices. The power supply should be stable and within specified limits to prevent write errors or data corruption. While the device has built-in write protection, implementing additional software protection in the host system is recommended for critical applications. Avoid exceeding the maximum write cycle specifications to ensure long-term reliability.

B2B Procurement Guide

When procuring CAT24WC05PI in bulk, consider lead times which typically range from 4-12 weeks depending on market conditions. The price per unit decreases significantly for quantities above 1,000 pieces. Verify the required package type (DIP, SOIC, etc.) for your application. For high-reliability applications, request industrial or automotive-grade versions, which may cost 20-30% more but offer extended temperature ranges and stricter quality controls.