Real Time Clock
Adafruit DS3231 Precision RTC Breakout - I²C
The datasheet for the DS3231 explains that this part is an "Extremely Accurate I²C-Integrated RTC/TCXO/Crystal". And, hey, it does exactly what it say..
Breakout Real Time Clock - Dead on (RTC)
Here is a real time clock based on the DS3234 Real Time Clock IC. The DS3234 is a low-cost, extremely accurate SPI bus real-time clock with an integrated ..
ChronoDot- Ultra-precise Real Time Clock
The ChronoDot RTC is an extremely accurate real time clock module, based on the DS3231 temperature compensated RTC (TCXO). It includes a CR1632 battery (n..
Real Time Clock (RTC) Breakout Module
This is the SparkFun Real Time Clock (RTC) Module, this little breakout that uses the DS1307 to keep track of the current year, month, day as well as the curre..
Real Time Clock (RTC) Breakout Board + battery Clip
This a custom designed module for the DS1302 Real Time Clock. Interfacing the DS1302 with a microprocessor is simplified by using..
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