Maxim Integrated DS1339C-2 Real-Time Clock

The DS1339C-2 is a low-power, full binary-coded decimal (BCD) clock/calendar with a 56-byte NV SRAM from Maxim Integrated. Designed to address the needs of complex embedded systems, this integrated circuit provides a comprehensive timekeeping solution that is both accurate and reliable. The device includes an I2C interface for seamless integration with microcontrollers and other digital systems.

Key features of the DS1339C-2 include:

• Real-Time Clock/Calendar: Tracks time with hours, minutes, and seconds, along with day, date, month, and year information. The clock/calendar is fully BCD-coded and maintains accurate timekeeping with leap-year compensation valid up to the year 2100.
• Automatic Power-Fail Detect: A built-in circuit detects power failures and automatically switches to the backup energy source, ensuring uninterrupted timekeeping and data retention.
• Low Power Consumption: The device is optimized for low power consumption, making it ideal for battery-powered applications where energy efficiency is paramount.
• 56-Byte NV SRAM: Offers non-volatile storage for critical data, which is preserved across power cycles and does not require a battery to maintain its contents.
• I2C Serial Interface: Provides a simple two-wire serial interface for communication with microcontrollers, allowing for easy integration into existing designs.
• Trickle-Charge Capability: Supports a trickle-charge feature that can maintain the charge of a backup battery or supercapacitor, ensuring the RTC remains powered during extended power outages.

Applications for the DS1339C-2 are diverse and include:

• Embedded Systems
• Industrial Control Systems
• Point-of-Sale (POS) Terminals
• Portable Medical Devices
• Utility Meters

The DS1339C-2 is available in a compact, surface-mount package and operates over the industrial temperature range. Its combination of features, power efficiency, and reliable timekeeping makes it an excellent choice for designers looking for a robust real-time clock/calendar component.