connectivity
mikroBUS
™
sockets
mikroBUS
™
pinout explained
Easier connectivity and simple configuration are
imperative in modern electronic devices. Success
of the USB standard comes from it’s simplicity of
usage and high and reliable data transfer rates.
As we in mikroElektronika see it, Plug-and-Play
devices with minimum settings are the future in
embedded world too. This is why our engineers
have come up with a simple, but briliant pinout
with lines that most of today’s accessory boards
require, which almost completely eliminates the
need of additional hardware settings. We called
this new standard the
mikroBUS
™
.
EasyPIC
™
v7
is the first development board in the world to
support mikroBUS
™
with two on-board sockets.
As you can see, there are no additional DIP
switches, or jumper selections. Everything is
already routed to the most appropriate pins of
the microcontroller sockets.
mikroBUS
™
host connector
Each mikroBUS
™
host connector consists of
two 1x8 female headers containing pins
that are most likely to be used in the target
accessory board. There are three groups
of communication pins:
SPI
,
UART
and
I
2
C
communication. There are also single pins
for
PWM
,
Interrupt
,
Analog
input
,
Reset
and
Chip Select
. Pinout contains two power
groups:
+5V and GND
on one header and
+3.3V and GND
on the other 1x8 header.
AN
- Analog pin
RST
- Reset pin
CS
- SPI Chip Select line
SCK
- SPI Clock line
MISO
- SPI Slave Output line
MOSI
- SPI Slave Input line
+3.3V
- VCC-3.3V power line
GND
- Reference Ground
PWM
- PWM output line
INT
- Hardware Interrupt line
RX
- UART Receive line
TX
- UART Transmit line
SCL
- I2C Clock line
SDA
- I2C Data line
+5V
- VCC-5V power line
GND
- Reference Ground
RC5
RC4
RC3
PE1
RE0
RA2
RC7
RC6
RC3
RC4
RB0
RC0
AN
RST
CS
SCK
MISO
MOSI
3.3V
GND
PWM
INT
RX
TX
SCL
SDA
5V
GND
VCC-3.3V
VCC-5V
RC5
RC4
RC3
RE2
RA3
RA5
RC7
RC6
RC3
RC4
RC1
RB1
VCC-3.3V
VCC-5V
AN
RST
CS
SCK
MISO
MOSI
3.3V
GND
PWM
INT
RX
TX
SCL
SDA
5V
GND
R90
1K
R91
1K
DATA BUS
Figure 9-1:
mikroBUS
™
connection
schematics
http://www.mikroe.com/mikrobus
mikroBUS
™
is not made to be only a part of our development boards. You can freely
place mikroBUS
™
host connectors in your final PCB designs, as long as you clearly
mark them with mikroBUS
™
logo and footprint specifications. For more information,
logo artwork and PCB files visit our website:
Integrate mikroBUS
™
in your design
page 19
