2. Soldering the headers
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.
1
3
RTC
click
1. Introduction
2
4. Board applications
RTC click is ideal for applications which
require real-time clocks, calendars and
programmed alarms. Communication with
the board is done over standard I
2
C interface.
The Real-Time Clock (RTC) has 24 hour or
12 hour format, it has programmable alarm,
timer, and interrupt function.
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.
Turn the board upward again. Make sure
to align the headers so that they are
perpendicular to the board, then solder the
pins carefully.
RTC Click is an accessory board in
mikroBus™
form factor. It features the
PCF8583P
serial
real-time clock (RTC). It is a low-power, full
binary-coded decimal (BCD) clock/calendar.
Board uses I
2
C interface for communication
and 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. Board is set
to use 3.3V power supply by default. Solder
PWR SEL
SMD jumper to 5V position if used
with 5V systems.
3. Plugging the board in
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.
click
www.mikroe.com
RTC click Manual
ver. 1.00
BOARD
0 100000 020104
5. RTC click Board Schematics
6. Power supply selection
On-board
PWR SEL
zero-
ohm resistor (SMD jumper) is
VCC
R2
220
PWR
Vrtc
R1 56
D2 BAT43
used to determine whether
5V or 3.3V power supply
is used. This resistor is
provided in 3.3V position
by default. In order to use RTC click with
5V development system, it is necessary to
resolder this jumper to 5V position.
D1 BAT43
VCC
C3
100nF
J1
1
2
3
VCC
C1
100nF
7. Code Examples
BAT1
3V/230mA
+3V3
+5V
PWM
INT
RX
TX
SCL
SDA
+5V
GND
Vrtc
C2
22pF
X1
32.768KHz
U1
OSCI
OSCO
A0
GND
VCC
INT
SCL
SDA
Vrtc
VCC
R3
4K7
R4
4K7
R5
4K7
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.
AN
RST
CS
SCK
MISO
MOSI
+3.3V
GND
INT
SCL
SDA
1
2
3
4
8
7
6
5
.com
INT
SCL
SDA
PCF8583P
8. Support
MikroElektronika offers
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!
MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document.
Specification and information contained in the present schematic are subject to change at any time without notice. Copyright © 2012 MikroElektronika. All rights reserved.
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