RTC (Real-Time Clock)
makerA Real-Time Clock (RTC) is a hardware component that provides precise timekeeping functionality in electronic systems.
expanded
An RTC maintains the time even when the main device is powered off, using a dedicated power source like a coin-cell battery. RTCs are critical for applications requiring accurate time management, such as scheduling tasks in embedded systems or maintaining timestamp integrity in data logging devices.
examples
A DS3231 RTC module provides timekeeping with an accuracy better than ±2 ppm from 0°C to +40°C and a battery backup with a CR2032 coin cell.
Used in home automation systems to trigger events based on the current time, such as turning on lights or adjusting thermostats.
The PCF8563 RTC module offers timekeeping functionality with a time deviation of less than 5 ppm, and supports countdown timer and alarm interrupt features.
Employed in remote weather stations for timestamping sensor data to ensure accurate temporal trends in climate analysis.