The X25043E is a 4Kbit Serial SPI EEPROM (Electrically Erasable Programmable Read-Only Memory) device manufactured by Xicor Inc. This memory device provides non-volatile storage, meaning data is retained even when power is removed. It communicates with a microcontroller or other host system via a Serial Peripheral Interface (SPI) bus.

Applications

• Data logging in industrial equipment
• Configuration storage in embedded systems
• Calibration data storage in instrumentation
• Serial number storage in electronic devices
• Parameter storage in automotive electronics

Features

• 4Kbit (512 x 8) memory organization
• SPI serial interface
• Low power consumption
• Self-timed write cycle
• Write protect feature

Benefits

• Non-volatile data storage without external battery backup
• Simple interface to microcontrollers via SPI bus
• Reduced system power consumption
• Simplified write operations
• Prevention of accidental data corruption

Additional Details

The X25043E operates from a single 5V power supply. It features a typical endurance of 1 million erase/write cycles per byte. The SPI interface supports various clock speeds, depending on the specific requirements of the application. The write protect feature can be enabled to prevent accidental overwriting of the memory contents. The 'E' suffix in the part number may indicate an extended temperature range. Refer to the Xicor (now part of Renesas) datasheet for detailed electrical characteristics, timing diagrams, and application notes for proper SPI communication and memory management. The device is typically available in SOIC or DIP packages for easy integration into PCB designs.