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2

3

click

BOARD

www.mikroe.com

2. Soldering the headers

3. Plugging the board in

Once you have soldered the headers your 
board is ready to be placed into the desired 
mikroBUS

 socket. Make sure to align the cut in 

the lower-right part of the board with the 

markings on the silkscreen 

at the mikroBUS

 socket. 

If all the pins are aligned 

correctly, push the board all 

the way into the socket.

Turn the board upward again. Make sure 
to align the headers so that they are 
perpendicular to the board, then solder the 
pins carefully.

Turn the board upside down so that 
the bottom side is facing you upwards. 
Place shorter pins of the header into the 
appropriate soldering pads.

Before using your click

 board, make sure 

to solder 1x8 male headers to both left and 
right side of the board. Two 1x8 male headers 
are included with the board in the package.

4. Essential features

RTC3 click

 has an integrated trickle charger 

that maintains a backup charge through 
with an onboard super capacitor. The board 
is ideal for applications which require real-
time clocks, calendars and programmed 
alarms. It counts seconds, minutes, hours, 
date of the month, month, day of the week, 
and year with leap-year clock function with 
four year calendar.

1

RTC3 click

 carries 

BQ32000

, a real time 

clock/calendar with automatic switchover 
to backup power supply. The clock frequency 
is derived from an onboard 

32.768KHz 

oscillator

. RTC3 click

 communicates with 

the target board microcontroller through 
mikroBUS

 I2C lines: SCL, SDA. In addition, 

the INT pin serves as a configurable interrupt 
output. The board is designed to use a 3.3V 
power supply only.

RTC3

 

click

1. Introduction

RTC3 click

 manual

ver 1.00

0100000074497

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