RX72T CPU Card
User’s Manual
R12UZ0031EJ0100 Rev.1.00
Page 15 of 29
Feb. 21, 2019
6.4
Connecting the Serial Communication
The product communicates with the UART via the serial communication connectors. There are three serial
communication connectors: CN4, CN6, and CN7. Table 6-5 lists their pin assignments. Use CN6 when using a tool
such as waveform display in conjunction with the INV-BRD.
Table 6-5 Pin Assignments of Serial Communication Connectors (CN2, CN4, CN6)
Connector No.
Pin No.
Pin Function
RX72T Connection Pins
CN2
SCI5
(DNF)
1
5V
VCC
2
RX72T transmit side
PB5/TXD5/CTX0
3
RX72T receive side
PB6/RXD5/CRX0
4
GND
VSS
CN4
SCI8
(DNF)
1
5V
VCC
2
RX72T transmit side
PC1/ TXD8
3
RX72T receive side
PC0/ RXD8
4
GND
VSS
CN6
SCI6
1
5V
VCC
2
RX72T transmit side
PB0/TXD6
3
RX72T receive side
PB1/RXD6
4
GND
VSS
6.5
Hall Sensor Signal Input
The product is equipped with a Hall sensor signal input connector. Using this connector, it is possible to input the Hall
sensor signal from the motor supplied with the Motor RSSK directly to the product. The signal input to the product is
pulled up to 5 V and passed through an RC filter before being input to the RX72T. Table 6-6 lists the pin assignments
of the Hall sensor signal input connector, and Table 6-7 lists connector information.
Table 6-6 Pin Assignments of Hall Sensor Signal Input Connector (CN5)
Pin No.
Pin Function
RX72T Connection Pins
1
5V
VCC
2
GND
VSS
3
HALL_U_1
P23/IRQ11
4
HALL_V_1
P24/IRQ4
5
HALL_W_1
P25/IRQ10
Table 6-7 Hall Sensor Signal Input Connector Information
Part
Product No.
Manufacturer
Connector (CN5)
B5B-XH-A
J.S.T. Mfg. Co. Ltd.
