AB0804-T3

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Real Time Clocks are essential peripherals included in many electronics projects and devices. They allow for time and calendar functions to be used without the need of additional external components for processing or reading time. The AB0804-T3 is one such Real Time Clock module, offering a range of advanced features, which make it useful for many applications throughout the industrial, commercial and hobbyist sectors. This article provides an overview of the AB0804-T3, including its application fields and working principle.

Overview of the AB0804-T3

The AB0804-T3 RTC module is an all-around time-keeping solution for a wide range of applications. It has an integrated backup battery and crystal oscillator, timekeeping accuracy of up to +/- 3 minutes per year and operates in temperatures ranging from -40 to +85ºC. The AB0804-T3 offers excellent synchronizing options with calendar, switching, and alarm clocks, while also supporting various software and hardware interfaces.

The module is controlled by an ARM Cortex-M0 core which can be programmed via a UART (USB to serial) adapter. The module has a variety of built-in functions, including time synchronization, alarm clock scheduling, a battery-powered timer, and a digital output switchable initialization circuit (DIS).

Application Fields

The AB0804-T3 has a wide range of applications in the industrial, commercial and hobbyist sectors. It can be used in motor controllers, smart buildings, mobile devices and home automation products, among others. The AB0804-T3 is well suited to applications with time restriction and scheduling needs. As such, it can be used for time tracking in point-of-sale applications, time-stamping and logging of industrial processes and laboratory experiments, scheduling of lighting, heating and cooling systems and more.

Working Principle

The AB0804-T3 operates off a battery-powered, low-power oscillator. This low-power oscillator, much like a watch, utilizes quartz to produce regular signals and maintain time. The oscillator is also interfaced with crystal-containing metal-electrodes located in the module’s casing. The oscillator commands the low voltage current to flow through the quartz crystal and create an electronic impulse that corresponds to a single second. This impulse is then stored into the module’s RTC memory, where it is later read to calculate the date and time.

The module integrates a DIS, or digital output switchable initialization circuit. This circuit is used to ensure the accuracy of the time calculation by providing an external reset signal and automatically resetting the module after a power interruption or other environmental factors. The DIS is also used to synchronize the time calculation with the external clock sources, such as the GPS or NTP servers.

Conclusion

The AB0804-T3 offers a reliable and accurate time-keeping solution for a wide range of applications. It includes an embedded ARM Cortex-M0 processor, a backup battery, and a digital output switchable initialization circuit. The module is easily configurable with a UART adapter and can be used in motor controllers, smart building systems and more.

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