DS1284Q/T&R

The DS1284Q/T&R is a 2-wire Real Time Clock (RCT) with a CMOS RAM and crystal oscillator that operates up to 7.30pF. This device is designed to provide accurate time and date information by keeping track of time in seconds, minutes, hours, day, month and year. Also, it features leap-year correction, temperature sensor, built in voltage monitoring to provide system reset upon detection of low voltages, battery backup and also an automated power down detection circuitry. The DS1284Q/T&R is useful for a number of digital clock and calendar applications such as for mobile phones, digital cameras, digital TV and more. In addition, it can also be used for managing alarms, time-stamping and logging of events.

Application Field

The DS1284Q/T&R is used in a wide range of applications requiring accurate timekeeping and event logging. It is suitable for systems that need to be well-synchronized with a global time or an internal clock. Such systems include:

• Mobile phones
• Digital cameras
• Digital TV
• Alarm clocks
• Home automation devices
• Security systems
• Industrial automation systems
• GPS systems
• Biometrics devices
• Medical devices

Working Principle

The working principle of the DS1284Q/T&R is based on the fact that it is a RTC with a crystal oscillator. This oscillator oscillates at a frequency of 32.768khz, making it possible to measure the passage of time with great accuracy. As a result, the device is able to keep an accurate record of the current time and date. Moreover, it also has an inbuilt temperature sensor that allows it to adjust its time keeping scheme according to the ambient temperature. In addition, its integrated voltage monitoring circuitry provides a reset when the voltage level drops below a certain threshold.

The DS1284Q/T&R has two operating modes: calendar and alarm. In calendar mode, the device can be set to provide automatic logging of events or time-stamping. In alarm mode, the device can be programmed to wake up after certain intervals of time and can then be used to trigger alarms. Furthermore, the device also provides power-down protection for battery backup, in case of a power failure. This ensures that the data is retained even when the power is switched off.

Overall, the DS1284Q/T&R is an excellent choice for applications that require accurate timekeeping. Its features such as power-down protection, temperature sensing, voltage monitoring, battery backup and an automated power-down detection circuitry make it suitable for use in a wide range of applications.