The ST24LC21BB6 is a robust and reliable EEPROM (Electrically Erasable Programmable Read-Only Memory) chip designed by STMicroelectronics, a leader in semiconductor solutions. This memory component is ideal for applications that require data storage that can be electrically erased and reprogrammed both in-circuit or in standalone systems.

Key Features

• Memory Size: The ST24LC21BB6 offers a storage capacity of 1 Kbit, organized as 128 x 8 bits, which is suitable for storing configuration and calibration data, or small application parameters that need to be preserved between power cycles.
• Interface: This device communicates via a two-wire serial I²C (Inter-Integrated Circuit) bus interface, which ensures simple integration into most microcontroller-based systems with minimal pin count.
• Write Cycle Time: It features a fast write cycle time of 5 ms max, allowing for efficient data handling and rapid updates to stored information.
• Operating Voltage Range: The EEPROM operates within a voltage range of 2.5V to 5.5V, making it versatile for use in various electronic circuits and battery-operated devices.
• Write Protect: A hardware write protect option is available, which prevents accidental data overwriting and ensures the integrity of the data stored on the chip.
• Temperature Range: It is designed to operate over an extended temperature range from -40°C to +85°C, thereby ensuring reliability in diverse environmental conditions.
• Endurance: The device offers a high write endurance, with 1 million write cycles guaranteed at each memory location, and a data retention period of 40 years, ensuring the longevity and durability of the data storage.

Applications

The ST24LC21BB6 is well-suited for a variety of applications that require low-density non-volatile memory storage. Typical uses include:

• Consumer electronics
• Industrial control systems
• Medical devices
• Automotive systems
• Smart cards
• Portable devices

With its combination of features, the ST24LC21BB6 from STMicroelectronics is a reliable choice for designers and engineers looking to incorporate a small, durable, and easy-to-use EEPROM into their electronic designs.