ST24LC21B EEPROM from STMicroelectronics

The ST24LC21B is a robust and versatile Electrically Erasable Programmable Read-Only Memory (EEPROM) chip designed by STMicroelectronics. This high-performance memory device is ideal for a wide range of applications that require reliable data storage and retrieval. With its non-volatile nature, the ST24LC21B ensures data retention even without a power supply, making it perfect for configuration, identification, and state storage purposes.

Key Features

• Memory Size: The ST24LC21B offers a storage capacity of 1 Kbit, which is organized as 128 x 8 bits. This size is suitable for storing small amounts of critical data such as device configurations, calibration parameters, or user preferences.
• Two-Wire I2C Serial Interface: The device supports the I2C (Inter-Integrated Circuit) protocol, allowing for simple and efficient integration into most microcontroller-based systems. This two-wire serial interface facilitates easy communication with a host controller.
• Write Cycle Time: It features a fast write cycle time of 5 ms, enabling quick updates to stored data without significant delays.
• Write Protect: A hardware write protect option is available, which provides an added layer of security to prevent accidental data overwrites or corruption.
• Low Power Consumption: Designed with power efficiency in mind, the ST24LC21B operates with low power consumption, making it suitable for battery-powered and energy-sensitive applications.
• Wide Operating Voltage Range: The memory chip operates across a voltage range of 2.5 V to 5.5 V, accommodating various power supply levels and ensuring compatibility with both 3.3 V and 5 V systems.
• High Reliability: STMicroelectronics guarantees high reliability for the ST24LC21B, with endurance up to 1 million write cycles and a data retention period of 40 years.
• Temperature Range: The device is operational over an industrial temperature range of -40°C to +85°C, ensuring performance in harsh environmental conditions.

Applications

The ST24LC21B is suited for a diverse set of applications, including but not limited to:

• Consumer electronics
• Industrial control systems
• Medical devices
• Automotive systems
• Telecommunication infrastructure

With its proven track record and backed by STMicroelectronics' commitment to quality, the ST24LC21B stands out as a reliable choice for designers and engineers looking to incorporate a compact and efficient EEPROM solution into their next project.