mikroElektronika RS232 click User manual

1. Introduction
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.
3. Plugging the board in
2 3
2. Soldering the headers
1
4. Essential features
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.
click
BOARD
www.mikroe.com
RS232 click™is a simple solution for adding
RS232 serial communications to your design.
The board features a standard RS232
DB9 port and a MAX3232 IC, along with
a mikroBUS™host socket, three jumpers
and a power indicator LED. RS232 click™
communicates with the target board through
mikroBUS™RX (RXD), TX (TXD), CS (RTS), and
INT (CTS) lines. RS232 click™is designed to
use either a 3.3V or 5V power supply.
The RS232 DB9 port (9 pins) and
the MAX3232 IC constitute a serial
communications connector. RS232 is mostly
used for industrial machines, networking
equipment and scientic instruments, as
well as for computer peripherals. The board
features two jumper positions to connect
RTS (J2) and CTS (J3) lines to the target
board (zero-ohm SMD jumpers not provided
in the package).
RS232 click v100 Manual
ver. 1.00
RS232 click

8. Support
MikroElektronika oers Free Tech Support
(www.mikroe.com/support/) until the end
of the product’s lifetime, so if something
goes wrong, we’re 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 examples
for mikroC™, mikroBasic™and mikroPascal™
compilers on our Libstock website. Just
download them and you are ready to start.
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 © 2014 MikroElektronika. All rights reserved.
5. RS232 click™Board Schematic
R1
2K2
LD1
VCC
1
2
3
4
5
6
7
89
10
11
12 13
14
15 16
C1+
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
T1IN
T2IN
VCCGND
T1OUT
R1INR1OUT
R2OUT
M AX 3 2 3 2
U1
MAX3232
E1
10uF
AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
MIKROBUS DEVICE CONN.
R2
1K
C1
100nF
RXD
TXD
RXD
TXD
J1
VCC
VCC
VCC
5
9
4
8
3
7
2
6
1
1
5
96
CN1
DB9 CONNECTOR
C2 470nF
C3
470nF
C4 470nF
C5
100nF
VCC
RS232 CTS
RS232 RTS
CTS
RTS
RTS
CTS
RS232 CTS
RS232 RTS
R3
1K
VCC
J2
J3
6. SMD Jumpers
To switch between 3.3V and 5V power
supplies use the PWR SEL zer-ohm SMD
jumper. By default it’s soldered in the 3.3V
position.