User Manual

Page 6
mikroBUS
™
standard specications
T
he mikroBUS
™
socket comprises a pair of 1x8 female headers with a proprietary pin
conguration and silkscreen markings. The pinout (always laid out in the same order)
consists of three groups of communications pins (SPI, UART and I
2
C), six additional pins
(PWM, Interrupt, Analog input, Reset and Chip select), and two power groups (+3.3V and GND on
the left, and 5V and GND on the right 1x8 header). The spacing of pins is compatible with standard
(100 mil pitch) breadboards.
Pin functions/silkscreen markings for the socket (see page 11 for how to mark add-on boards)
The following pages contain detailed specication on how to implement mikroBUS
™
sockets into your hardware design. The
easiest way to ensure that your design is in accordance with the prescribed standards, is to use our Altium Designer template
les. Download them from:
www.mikroe.com/mikrobus
Analog - AN
Reset - RST
SPI Chip Select - CS
SPI Clock - SCK
SPI Master Input Slave Output - MISO
SPI Master Output Slave Input - MOSI
VCC-3.3V power - +3.3V
Reference Ground - GND
PWM - PWM output
INT - Hardware Interrupt
RX - UART Receive
TX - UART Transmit
SCL - I
2
C Clock
SDA - I
2
C Data
+5V - VCC-5V power
GND - Reference Ground
Pinout specication
NOTE:
T
mikroBUS
™
socket standard