DS1339U-2+T&R

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The DS1339U-2+T&R is an improved high-performance clock that provides timed and real-time capabilities in a single integrated design. It is a stand-alone, surface-mount, real-time clock and crystal oscillator module that operates from a single 3.3 volt power supply. Combined with a real-time clock, the DS1339U-2+T&R is also capable of providing accurate synchronization of system clocks and providing precision timing information for applications such as embedded systems, telecommunications and industrial automation.

Application Field

The DS1339U-2+T&R is ideally suited for applications in which real-time clock synchronization and timing are required. It is highly accurate, with a time keeping accuracy of 25ppm over an operating temperature range from - 40 °C to 85 °C. Additionally, the device offers an integrated time base to insure maximum performance, as well as an onboard crystal oscillator to minimize external components.

Examples of applications that could benefit from the DS1339U-2+T&R include data acquisition systems, digital pre-distortion and other data flow control systems; industrial automation systems; embedded systems and telecommunication applications, such as routers and switches. The device is also popular in consumer electronics that require timing functions, such as gaming consoles, weather stations, digital cameras, PDA\'s and more.

Working Principle

The DS1339U-2+T&R is a stand-alone clock and crystal oscillator module, with an integrated time base and two independent real-time clock/calendar blocks. The two real-time clock blocks can be programmed to perform different functions, providing additional flexibility for application. The clock is programmed using a serial I2C interface and a high speed SPI interface.

When the clock is powered on, the oscillator starts to operate and continues to run until the power is removed. The DS1339U-2+T&R ensures that the time keeping accuracy is maintained for the entire operation life, allowing for a highly accuracy timekeeping. Additionally, the device can be programmed to facilitate time-based interrupts and periodic events, to provide accurate timing for embedded applications.

The DS1339U-2+T&R also provides a number of power management features, to ensure that the power consumption is minimal. The device offers an integrated low-power standby mode, which can be used to reduce current consumption in between tasks and reduce energy costs. Furthermore, the device includes an on-chip reset circuit to prevent resetting during power fluctuations or brownouts.

Overall, the DS1339U-2+T&R is an ideal time keeping device for embedded applications requiring precision timing, offering high accuracy and reliability, minimal power consumption and integrated features such as time-based interrupts and power management.

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