Epson

RTC-62421B

RTC-62421B Description

The RTC-62421B is a high-performance real-time clock/calendar integrated circuit (IC) manufactured by Epson, designed for applications requiring precise timekeeping and calendar functions. This IC is housed in a 18-pin DIP package and features a parallel interface, making it suitable for a wide range of electronic systems. The RTC-62421B operates within a supply voltage range of 4.5V to 5.5V, ensuring reliable performance across various power conditions. It is mounted through-hole, providing robust mechanical stability and ease of integration into printed circuit boards.

RTC-62421B Features

The RTC-62421B stands out with its low power consumption, consuming a maximum of 1.8µA to 3µA during timekeeping operations across a voltage range of 2V to 5V. This feature makes it ideal for battery-powered applications where energy efficiency is crucial. The IC supports both 12-hour and 24-hour time formats, offering flexibility in time display options. Additionally, it includes a leap year feature, ensuring accurate date calculations over extended periods.

The RTC-62421B also benefits from its parallel interface, which facilitates straightforward communication with microcontrollers and other system components. The IC is packaged in a tube, providing protection during handling and storage. It is classified under HTSUS code 8542.39.0001 and has an ECCN rating of EAR99, indicating compliance with international export regulations. The moisture sensitivity level (MSL) is rated at 1 (unlimited), ensuring the IC can be safely stored and handled without risk of moisture damage.

RTC-62421B Applications

The RTC-62421B is well-suited for a variety of applications where accurate timekeeping and calendar functions are essential. It is particularly ideal for embedded systems, consumer electronics, and industrial control systems that require reliable time references. Some specific use cases include:

• Embedded Systems: Providing accurate time and date information for system logs and event timestamps.
• Consumer Electronics: Enhancing user experience by offering precise time display in devices such as digital clocks, home appliances, and portable electronics.
• Industrial Control Systems: Ensuring accurate scheduling and time-based control functions in manufacturing and automation processes.

Conclusion of RTC-62421B

The RTC-62421B is a versatile and reliable real-time clock/calendar IC that offers significant advantages over similar models. Its low power consumption, flexible time format options, and leap year feature make it a standout choice for applications requiring precise timekeeping. Despite its obsolete status, the RTC-62421B remains a valuable component for legacy systems and new designs where its unique features and performance benefits are required.