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RX24U CPU Card User's Manual
R12TU0018EJ0120
Page 13 of 26
2022.2.21
5.4
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 5.5 lists their pin assignments. Use CN6 when using a tool such
as waveform display in conjunction with the INV-BRD.
Table 5.5 Pin Assignments of Serial Communication Connectors (CN2, CN4, CN6)
Connector No.
Pin No.
Pin Function
RX24U Connection Pins
CN2
SCI5
1
5V
VCC
2
RX24U transmit side
PB5/TXD5
3
RX24U receive side
PB6/RXD5
4
GND
VSS
CN6
SCI1
1
5V
VCC
2
RX24U transmit side
PD3/TXD1
*1
3
RX24U receive side
PD5/RXD1
*1
4
GND
VSS
CN6
SCI6
1
5V
VCC
2
RX24U transmit side
PB2/TXD6
3
RX24U receive side
PB1/RXD6
4
GND
VSS
Note 1. TXD / RXD of SCI1 is shared with E1/E2 Lite, so it is not possible to use SCI1 when the product is
connected to the E1/E2 Lite.
5.5
Hall Sensor Signal Input
The product is equipped with a Hall sensor signal input connector. The signal input to the product is pulled up to 5 V
and passed through an RC filter before being input to the RX24U. Table 5.6 lists the pin assignments of the Hall sensor
signal input connector, and Table 5.7 lists connector information.
Table 5.6 Pin Assignments of Hall Sensor Signal Input Connector (CN5)
Pin No.
Pin Function
RX24U Connection Pins
1
5V
VCC
2
GND
VSS
3
HU
P10/IRQ0
4
HV
P11/IRQ1
5
HW
P01/IRQ4
Table 5.7 Hall Sensor Signal Input Connector Information
Part
Product No.
Manufacturer
Connector (CN5)
B5B-XH-A
J.S.T. Mfg. Co. Ltd.