MC-COM User's Manual
R12UZ0093EJ0100 Rev 1.00
Page 9 of 11
August 3, 2021
5. Communication Board Functions
This section describes the specification of the communication board.
5.1
Power Supply
Power of this product is supplied at 5V from USB connector.
5.2
USB communication
This product is equipped with a USB type-C connector for communication with a PC when using Renesas
Motor Workbench, etc.
5.3
Serial Communication
This product has two SCI connectors for serial communication with the target MCU when using Renesas
Motor Workbench, etc. The pin assignments are shown in Table 5-1and
Table 5-2. When using the
communication cable bundled with this product, use CN5. When using the communication cable bundled
with RTK0EMX270S00020BJ or RTK0EMA170S00020BJ, use CN4.
The serial communication connector and the MCU (RX72N) are connected via a digital isolator, so the
communication board and the CPU board with the target MCU are isolated.
Table 5-1 SCI connector (CN5) pin assignment
Pin No.
Function
Note
1
VCC
2
RXD
Connect to TXD of target MCU
3
TXD
Connect to RXD of target MCU
4
GND
Table 5-2 SCI connector (CN4) pin assignment
Pin No.
Function
Note
1
VCC
2
RXD
Connect to TXD of target MCU
3
TXD
Connect to RXD of target MCU
4
GND
