• Description

SparkFun Qwiic Real Time Clock RV-1805

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. To make it even easier to get your readings, all communication is enacted exclusively via I2C, utilizing the handy Qwiic system so no soldering is required to connect it to the rest of your system.

This RTC module’s built in RV-1805 has two internal oscillators: a 32.768kHz tuning fork crystal and a low power RC based oscillator and can automatically switch between the two using the more precise crystal to correct the RC oscillator every few minutes. This feature allows the module to maintain a very accurate date and time with the worst case being +/- three minutes over a year.

There is also the option to add a battery to the board which means that you can let board sit with no power or connection to the outside world and the current hour/minute/second/date will be maintained.

Quick Spec

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

Dimensions

Resources

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

Shipping List

• 1 x SparkFun Qwiic Real Time Clock RV-1805

SparkFun Qwiic Real Time Clock RV-1805

• Brand: Sparkfun
• Product Code: BOB-14558
• Weight: 0.003kg
• Product Status : Active

Stock

Warehouse	Stock Status	Location
Centurion	In Stock	GG251
Stellenbosch	In Stock	C0024
Bulk Location	No Stock

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• R289.00 (Inc Tax: R332.35)