The CAT25C04PI is a 4Kb Serial CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) device manufactured by Catalyst Semiconductor (now ON Semiconductor). It's organized as 512 x 8 bits and communicates via a Serial Peripheral Interface (SPI) bus. This EEPROM is designed for low-power, non-volatile data storage in various electronic systems.

Applications

• Storage of configuration data in electronic devices
• Storing serial numbers and identification information
• Storing calibration data for sensors
• Storing user preferences in consumer electronics
• Data logging in embedded systems

Features

• 4Kb (512 x 8) EEPROM
• SPI interface (supports modes 0,0 and 1,1)
• Low power CMOS technology
• Self-timed write cycle
• Write protect feature
• Software write protect
• Endurance: 1,000,000 write cycles
• Data retention: 100 years
• 8-Pin PDIP package

Benefits

• Reliable non-volatile data storage for critical system parameters.
• Easy integration with microcontrollers via the SPI interface.
• Low power consumption makes it suitable for battery-powered applications.
• High endurance and data retention ensure long-term data integrity.
• Write protect features prevent accidental data corruption.

Technical Specifications

The CAT25C04PI operates at a voltage range of 1.8V to 5.5V. It has a typical standby current of less than 1µA. The SPI clock frequency can reach up to 10 MHz. The write cycle time is typically 5 ms. It's available in an 8-pin PDIP package.