DS1685-3

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DS1685-3 is a real time clock, also known as RTC, device specifically designed for applications and embedded systems. It is used in embedded systems where the time and date need to be kept up-to-date and precise. The time is kept as a 32-bit integer and can be used to calculate time and non-date specific events that fall within certain periods.

The DS1685-3 is mainly used in critical applications requiring time accuracy. This includes process control systems, industrial automation machines, transportation systems, emergency response devices, and so on.

The device contains a long-term crystal oscillator, commonly known as an X-TAL, that is extremely accurate and provides the clock source for the RTC. The X-TAL is also used to maintain an external temperature sensor temperature, providing reliable, temperature-controlled time clocks.

The DS1685-3 offers a wide range of features, including 24-bit counters, 128 bytes of battery-backed memory, dual 32-bit timers, and an adjustable interrupt timing crystal. It also provides two real-time clocks that can be used to obtain time and date information with accuracy up to 10ths of a second.

The device is powered by an onboard battery, providing continuous operation even when mains power is disconnected. It also features an internal temperature-compensated X-TAL, a low-power 32-bit processor, and a unique synchronization.

The DS1685-3 works by measuring the time passed by a number of oscillations of the onboard crystal. This value is then stored in a register and is used to calculate the time and date information. The device also features three operating modes, Normal, Stopwatch and Interrupt.

The Normal mode allows the device to measure and store time in real-time, making it perfect for applications such as security systems, for example. In Stopwatch mode, the device can measure and store any interval up to one millisecond. This mode is suitable for monitoring any event that might take place within a certain time period. For example, a smart home system could use Stopwatch mode to detect an intruder entering a room. The Interrupt mode enables the device to trigger interrupts in response to a certain event. This can be used to access memory addresses and execute instructions in response to specific conditions.

The DS1685-3 is a reliable and accurate device for applications that need to keep track of real-time clocks and events. Its wide range of features, long-term crystal oscillator, and low-power design make it the ideal choice for any system requiring accurate and reliable timing information.

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