Renesas RL78/G15

RL78/G15 CHAPTER 12 SERIAL ARRAY UNIT
R01UH0959EJ0110 Rev.1.10 Page 459 of 765
Mar 7, 2023
UART0 uses channels 0 and 1 of SAU0.
 10- and 8-pin products
Unit Channel Used as simplified SPI (CSI) Used as UART Used as Simplified I
2
C
0 0 CSI00 UART0 IIC00
1 — —
 20- and 16-pin products
Unit Channel Used as simplified SPI (CSI) Used as UART Used as Simplified I
2
C
0 0 CSI00 UART0 IIC00
1 CSI01 IIC01
Select any function for each channel. Only the selected function is possible. If UART0 is selected for channels 0 and 1 of
unit 0, for example, these channels cannot be used for CSI00 and CSI01
Caution When using a serial array unit for UART, both the transmitter side (even-numbered channel) and the
receiver side (odd-numbered channel) can only be used for UART.
UART performs the following two types of communication operations.
●
UART transmission (See 12.6.1)
●
UART reception (See 12.6.2)