Real-Time Clock RTC Module RV-1805 Qwiic I2C SparkFun

This SparkFun Real Time Clock (RTC) Module is a Qwiic-enabled breakout board for the RV-1805 chipset. The RTC is ultra-low power (running at only about 22nA in its lowest power setting) so it can use a supercapacitor for backup power instead of a normal battery. This means you get plenty of charge and discharge cycles without any degradation to the “battery." To make it even easier to get your readings, all communication is enacted exclusively via I2C, utilizing our handy Qwiic system so no soldering is required to connect it to the rest of your system. However, we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.

• Operating Voltage (Startup): 1.6V - 3.6V
• Operating Voltage (Timekeeping): 1.5V - 3.6V
• Operating Temperature: -40C - 85C
• Time Accuracy: +-2.0 ppm
• Current Consumption: 22nA (Typ.)
• I2C Address: 0xD2
• Supercapacitor for Backup Power
• 2x Internal Oscillators
• 2x Qwiic Connectors

STEMMA QT / Qwiic 4-pin 1mm Pitch White Female Connector Cable 150mm Long - Both Side can be purchased seperately.

• Schematic
• Eagle Files
• Hookup Guide
• Datasheet (RV-1805)
• Datasheet (DSK-414)
• Application Manual (RV-1805)
• Qwiic Page
• Arduino Library
• GitHub