Suggested Reading; Hardware Overview - sparkfun RV-1805 Hook-Up Manual

 PRT-00337

Suggested Reading

If you aren't familiar with our new Qwiic system, we recommend reading here for an overview. We would also
recommend taking a look at the hookup guide for the Qwiic Shield if you haven't already. Brushing up on your
2
skills in I C is also recommended, as all Qwiic sensors are I C.
How to Solder: Through-Hole Soldering
This tutorial covers everything you need to know about
through-hole soldering.
Qwiic Shield for Arduino & Photon Hookup
Guide
Get started with our Qwiic ecosystem with the Qwiic
shield for Arduino or Photon.

Hardware Overview

Let's look over a few characteristics of the RV-1805 RTC so we know a bit more about how it behaves.
Characteristic
Operating Voltage (Startup)
Operating Voltage (Timekeeping)
Operating Temperature
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2
I2C
An introduction to I2C, one of the main embedded
communications protocols in use today.
Range
1.6V - 3.6V
1.5V - 3.6V
-40°C - 85°C