SKU: TOY0021
A real-time clock (RTC) tracks current time. The SD2405 RTC module features low power (1.0uA), high accuracy (5ppm, <2.5min/year deviation without calibration) with an integrated crystal. It uses I2C for time data (12/24-hour configurable) and has a time alarm via interrupt output—an ideal solution to try.
Downloadable Resources
1. Example Code for Arduino-Read and Write RTC Time
The article offers a detailed tutorial on using Arduino to interact with RTC modules, demonstrating how to read and write real-time clock data using example code and wiring diagrams.
Reference
This article provides an in-depth exploration of RTC (Real Time Clock) registers, detailing their binary-coded decimal format and configurations for seconds, minutes, hour modes, days, months, and years to ensure accurate timekeeping.
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