DS14285

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Real-time clocks are widely used devices that provide date and time information tocontrol and monitor the real-world events, like alarms, power plant shut down, etc. The DS14285 is a widely known real-time clock (RTC) and memory device manufactured by Dallas Semiconductor. It accurately keeps track off current time and date, as well astemperature, alternatively it can act as an enhancement memory device while remaining CMOS powered, making it ideal for a variety of applications.

DS14285 Application Field

The DS14285 is a combination real-time clock plus 260 byte battery-backed CMOS RAM, stored in a 32-pin DIP package. In addition, it includes additional features, such a 16-bit system-level balancing for robust, accurate operation, automatic leap year adjustment, temperature measurement, and a 56-bit selectable segment RAM area. This makes the chip well-suited for managing a host of other real-time applications, such as clocks and watches, industrial controllers, medical equipment, etc. The device requires no additional components for PCB layout.

DS14285 Working Principle

The main component of the DS14285 is a battery-backed RAM (BBRAM) of 32-byte capacity. The real-time clock is used to keep track of the date and time, while the RAM location stores the data. For instance, if a person needs to set an alarm on the clock, they would store the alarm data in the RAM. When the clock reaches the set time, the chip will alert the user.

The DS14285 works off a voltage of 5V and utilizes the industry-standard I2C interface for interfacing with a microcontroller or external computer. This interface can communicate data in a two-wire format at speeds of up to 400 kHz. The chip is not only optimized for low-power applications, but it also provides robust and accurate operation in typically noisy and power-limited environments, such as mobile and industrial machines.

Conclusion

The DS14285 real-time clock is a well-rounded device with a number of features. It is a robust time-keeping device with support for temperatures, with a small footprint and low power consumption. Additionally, its support for I2C communication makes it easy to integrate into any system. This makes theds14285 an ideal choice for a variety of applications, from biomedical to industrial.

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