Maxim Integrated's DS1374U-33 I²C RTC with Trickle Charger

The DS1374U-33 from Maxim Integrated is a robust I²C real-time clock (RTC) with a built-in trickle charger, designed to provide precise time and date information for a wide range of applications. This high-performance RTC is equipped with an integrated 32.768kHz crystal oscillator, offering exceptional timekeeping accuracy, and it operates over the industrial temperature range of -40°C to +85°C, ensuring reliability in harsh environments.

One of the key features of the DS1374U-33 is its integrated trickle-charge circuitry, which allows for the connection of a backup energy source, such as a supercapacitor or rechargeable battery. This ensures that timekeeping continues uninterrupted in the event of a primary power failure. The trickle charger has programmable charge rates, making it adaptable to various backup energy storage components.

The device includes a 32-bit binary counter and a 24-bit countdown timer, which can be set to generate an alarm upon reaching zero. This feature is particularly useful for scheduling routine operations or monitoring time-sensitive tasks without the need for constant CPU intervention. Additionally, the DS1374U-33 offers the convenience of a programmable square-wave output, which can be used for various applications, including clocking peripherals.

Communicating via the I²C interface, the DS1374U-33 allows for easy integration into microcontroller-based systems. The device's address is also selectable via pin settings, providing flexibility for system design and the potential for multiple RTCs to be used on the same I²C bus.

The compact 8-pin µSOP package makes the DS1374U-33 an ideal choice for space-constrained applications. Its low power consumption is suitable for battery-powered devices, such as handheld electronics, medical equipment, and portable communication devices.

In summary, the DS1374U-33 from Maxim Integrated is a versatile and reliable RTC solution that provides accurate timing, a flexible interface, and the added security of a backup power source, making it an excellent choice for a wide range of time-critical applications.