mikroElektronika ClickBoard RTC2 click User manual

1. Introduction
RTC2 Click is an accessory board in mikroBus™
form factor. It features the DS1307 serial real-
time clock (RTC). It is a low-power, full binary-
coded decimal (BCD) clock/calendar with
programmable square-wave output signal.
Board uses I2C interface for communication,
and can only use 5V power supply. Board
features a 3V/230mA lithium battery as
a backup power supply which ensures that
timekeeping operation continues even when
the main power supply goes OFF.
RTC2 click
Once you have soldered the headers your
board is ready to be placed into 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.
3. Plugging the board in
2 3
2. Soldering the headers
1
4. Board applications
RTC2 click is ideal for applications which
require real-time clocks, calendars and
programmed alarms. Communication with
the board is done over standard I2C interface.
The Real-Time Clock (RTC) counts seconds,
minutes, hours, date of the month, month,
day of the week, and year with leap-year
clock function with four year calendar.
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
bottom side is facing you upwards. Place
shorter parts of the header pins in the
both soldering pad locations.
Before using your click board, make sure
to solder the provided 1x8 male headers
to both sides of the board. Two 1x8 male
headers are included with the board in
the package.
click
BOARD
www.mikroe.com
RTC2 click Manual
ver. 1.00
0 100000 020111
Downloaded from Arrow.com.

5. RTC2 click Board Schematics
1
2
3
5
4
6
7
8
X1
X2
VBAT
GND
SCL
SDA
SQW
VCC
U1
DS1307
X1
32.768KHz
INT
AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
VCC
R1
2K2
VCC
PWR
SCL
SDA
C1
100nF
VCC
R2
4K7
VCC
R3
4K7
R4
4K7
INT
SCL
SDA
BAT1
3V/230mA
8. Support
MikroElektronika oers Free Tech Support
(www.mikroe.com/esupport) until the
end of product lifetime, so if something goes
wrong, we are ready and willing to help!
7. Code Examples
.com
Once you have done all the necessary
preparations, it’s time to get your click
board up and running. We have provided
the examples for mikroC, mikroBasic and
mikroPascal compilers on our Libstock
website. Just download them and you are
ready to start.
6. Power supply - 5V only
Board is designed to use 5V
power supply only. If you
need to add RTC feature
to your 3.3V prototype or
development board, we
recommend you to use other boards such as
the RTC click board:
http://www.mikroe.com/eng/products/
view/785/rtc-click/
MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document.
Specication and information contained in the present schematic are subject to change at any time without notice. Copyright © 2012 MikroElektronika. All rights reserved.
Downloaded from Arrow.com.Downloaded from Arrow.com.