mikroElektronika I2C isolator click User manual

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
Bidirectional isolators based on TI’s Capacitive
Isolation technology have many advantages
over opto-couplers (performance, size, power
consumption etc.). When used together with
isolated power supplies, they block high volt-
ages, isolate grounds, and prevent interference
from from noise currents. Since ISO1540 pro-
vides two isolated bidirectional channels for
clock and data lines, it’s suitable for use in ap-
plications that have multiple masters.
1
I2C Isolator click™carries ISO1540, a low-
power, bidirectional isolator compatible
with I2C interfaces. On the board, the Texas
Instruments chip is connected to two sets of
I2C pins, one on the mikroBUS™connector
(SDA, SCL), the other on the upper edge of
the board (SCL2, SDL2). ISO1540 uses a
silicon dioxide barrier that separates the
logic input and output buers. The board can
use either 3.3V or 5V power supplies.
I2C isolator click™
1. Introduction
I2C isolator click™manual
ver 1.00
0100000076965

AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
MIKROBUS DEVICE CONN.
GND2GND1
VCC1 VCC2
GND1GND1
R2
1K
R1
1K
R3
1K
R4
1K
VCC1 VCC1 VCC2 VCC2
SDA
SCL
C1
1uF
C2
100nF
C3
1uF
C4
100nF
VCC1 VCC1 VCC2 VCC2
PWR1
VCC1
R5
470R J3
VCC1
VCC1
SDA1
SCL1
GND1
VCC2
SDA2
SCL2
GND2
U1
iso1540
SDA
SCL
VCC2
R6
470R
PWR2
SDA2
SCL2
1
2
3
4
VCC2
SCL2
SDA2
GND2
VCC1 SEL
8. Code examples
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!
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.
.com
6. Dimensions
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 © 2015 MikroElektronika.
All rights reserved.
mm mils
LENGTH 28.6 1125
WIDTH 25.4 1000
HEIGHT* 3.3 130
5. Schematic
7. The VCC1 SEL jumper 10. Disclaimer
9. Support
25.4 mm / 1000 mils
28.6 mm / 1125 mils
There is one
zero-ohm SMD
jumper used to
select whether
3.3V or 5V VCC1
levels are used. The jumper is soldered in
3.3V position by default.
* without headers

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