The X25043SI-2.7 is a 4K SPI Serial CMOS EEPROM (Electrically Erasable Programmable Read-Only Memory) device manufactured by Xicor Inc. (later acquired by Intersil, now Renesas). It is organized as 512 x 8 bits and is accessed via a simple Serial Peripheral Interface (SPI) bus. The device features low power consumption, making it suitable for portable and low-power applications.

Applications:

• Data Storage in Embedded Systems
• Configuration Storage
• Calibration Data Storage
• Parameter Storage in Industrial Equipment
• Consumer Electronics

Features:

• 4K (512 x 8) Bits of EEPROM
• SPI Serial Interface: Simplifies connection to microcontrollers.
• Low Power CMOS Technology: Minimizes power consumption.
• Self-Timed Write Cycle: Reduces programming complexity.
• Software Write Protection: Prevents accidental data corruption.
• High Reliability: Provides long-term data retention.
• Endurance: 1,000,000 Write Cycles

Benefits:

• Non-Volatile Memory: Data is retained even when power is removed.
• Easy Interface: SPI interface simplifies integration with microcontrollers.
• Low Power Consumption: Suitable for battery-powered applications.
• High Reliability: Ensures data integrity over time.
• In-System Programmability: Allows for easy updates without removing the device.

Specifications:

• Memory Size: 4096 bits (512 x 8)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 2.7V (Specific to the X25043SI-2.7 variant)
• Operating Temperature: -40°C to +85°C
• Write Cycle Time: 5 ms (typical)
• Data Retention: > 100 years
• Package: SOIC-8