4 KBIT SERIAL I2C BUS EEPROM WITH USER-DEFINED BLOCK WRITE PROTECTION The ST24C04 is a 4-Kbit (512 x 8) serial I²C EEPROM manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Size:** 4 Kbit (512 bytes)
- **Interface:** I²C (Inter-Integrated Circuit) compatible
- **Operating Voltage:** 1.7V to 5.5V
- **Operating Temperature Range:** -40°C to +85°C (Industrial)
- **Write Cycle Endurance:** 1,000,000 cycles
- **Data Retention:** 40 years
- **Page Write Buffer:** 16 bytes
- **Clock Frequency:** Up to 400 kHz (Fast-mode)
- **Write Protect Feature:** Hardware write protection for partial/full memory
- **Package Options:** SO8, TSSOP8, UFDFPN8

### **Descriptions:**
- The ST24C04 is a low-power, serial EEPROM designed for reliable non-volatile data storage.
- It supports bidirectional I²C communication, making it suitable for microcontroller-based systems.
- The device includes a built-in write-protect feature to prevent accidental data corruption.
- It is commonly used in industrial, automotive, and consumer electronics applications.

### **Features:**
- **Low Power Consumption:** Optimized for battery-powered applications.
- **I²C Interface:** Supports standard (100 kHz) and fast (400 kHz) modes.
- **Hardware Write Protection:** Protects memory sections via the WP pin.
- **Self-Timed Write Cycle:** Simplifies software management.
- **High Reliability:** Robust endurance and long data retention.
- **AEC-Q100 Qualified:** Suitable for automotive applications (specific variants).

For exact part numbers and additional details, refer to the official STMicroelectronics datasheet.

4 KBIT SERIAL I2C BUS EEPROM WITH USER-DEFINED BLOCK WRITE PROTECTION