Bravo HW User Guide
1VV0301646 Rev. 1
Page
16
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47
2020-03-23
An Arduino format board can be stacked on top of the Bravo board, connected to the J10,
J11, J12 and J13 connectors.
The Arduino board can be powered by the Bravo EVK board using the +5V from USBor
J24 Power plug.
The IOREF signal from Arduino board is connected to the level translator VCCB and sets
the interface B voltage level.
On the Arduino boards based on ATMEGA 8 bits MCU the IOREF level is +5V and the I/O
pins operate at +5V.
On the Arduino boards based on ATSAMD21 32 bits ARM cpu the IOREF level is +3.3V,
and all the I/O pins work at +3.3V.
To enable serial communication, configure J6 and J7 jumpers as described in the chapter
“UART & FTDI USB”.
The ARD_VUSB_910_ON enables/disables power from native USB Connector to VUSB
pin on ME910 module. For more details, please refer to the
chapter.
Arduino and the Raspberry PI boards cannot be connected at the same time.
J13,5
ARD_RTS
I
Input for Request to send
signal (RTS) from DTE
J13,4
ARD_CTS
O
Output for Clear to Send
signal (CTS) to DTE
J13,2
ARD_TXD
I
Serial data input from DTE
J13,1
ARD_RXD
O
Serial data output to DTE
