Renesas RZ/T2M, User Manual

Page: 30 / 87

Renesas Starter Kit+ for RZ/T2M 5. User Circuitry
R20UT4939EG0100 Rev. 1.00 Page 30 of 87
Apr 20, 2022
5.18 I 2 C Bus (Inter-IC Bus)
The RZ/T2M features three I
2
C (Inter-IC Bus) interface modules. Channel 0 of the IIC is connected to a 16Kbit
EEPROM. Channel 0 of the IIC is also multiplexed with I 2 C for EtherCAT and can also be used as EEPROM
for EtherCAT. Channel 1 of the IIC is connected to Pmod™ and Grove ® , QWIIC ® , mikroBUS ™ , Application
Headers. Table 5-25 below details the connected device, and their connection to the MPU.
Table 5-25: I 2 C BUS Port Connections
Signal Name Function
MPU
Port Pin
EEPROM_SCL (RIIC0) CLOCK P20_5 F10
EEPROM_SDA (RIIC0) DATA P20_6 C10
I2C_SCL_A (RIIC1) CLOCK P22_6 E7
I2C_SDA_A (RIIC1) DATA P22_7 C6
5.19 RS485 Interface
A RS485 transceiver IC is fitted to the RSK+ board and connected to the SCI MPU peripheral. Connection
information for the RS485 Interface header is provided in
Table 5-26 below.
The details of connecting to the
connected device and MPU are shown in Table 5-27 below.
Table 5-26: RS485 Interface Header (CN12) Connections
RS485 Interface Header Connections
Pin Circuit Net Name Pin Circuit Net Name
1 NC 2 NC
3 RS485_B 4 RS485_Y
5 RS485_Z 6 RS485_A
7 NC 8 NC
9 NC 10 NC
Table 5-27: RS485 Port Connections
Signal Name Function
MPU
Port Pin
RS485_RXD* 1 SCI3 Receive Signal P17_7 G20
RS485_DE* 1 SCI3 Driver Enable Signal P04_5 N1
SCI_TXD SCI3 Transmit Signal P18_0 H16
*1
: This connection is a not available in the default RSK+ configuration - refer to section 6 for the required
modifications.