A library to drive the RV-1805 extremely precise, extremely low power, real-time clock
The RV-1805-C3 from SparkFun is a very unique and exciting Real Time Clock. It is extremely precise (less than 7ppm per year!), extremely low power (less than 22nA!) and has all the necessary oscillators built-in making it small! The RV-1805 has not one, but two internal oscillators: a 32.768kHz tuning fork crystal and a lower power RC based oscillator. The RV-1805 can be configured to automatically switch between oscillators using the more precise crystal to correct the RC oscillator every few minutes. This allows the RTC to maintain a very accurate date and time with the worst case being +/- about 3 minutes over a year. The RV-1805 library operates the RTC at 22nA allowing for very long run times with very small backup power sources.
| Filename | Release Date | File Size |
|---|---|---|
| SparkFun_Qwiic_RTC_RV1805_Arduino_Library-1.1.0.zip | 2020-03-17 | 25.40 KiB |
| SparkFun_Qwiic_RTC_RV1805_Arduino_Library-1.0.8.zip | 2020-03-16 | 25.34 KiB |
| SparkFun_Qwiic_RTC_RV1805_Arduino_Library-1.0.7.zip | 2020-01-03 | 22.04 KiB |
| SparkFun_Qwiic_RTC_RV1805_Arduino_Library-1.0.6.zip | 2019-06-21 | 21.93 KiB |
| SparkFun_Qwiic_RTC_RV1805_Arduino_Library-1.0.4.zip | 2019-06-05 | 21.90 KiB |
| SparkFun_Qwiic_RTC_RV1805_Arduino_Library-1.0.3.zip | 2018-11-08 | 21.89 KiB |
| SparkFun_Qwiic_RTC_RV1805_Arduino_Library-1.0.1.zip | 2018-05-08 | 21.13 KiB |
| SparkFun_Qwiic_RTC_RV1805_Arduino_Library-1.0.0.zip | 2018-03-05 | 18.13 KiB |