Users Manual

Table Of Contents
R01UH0823EJ0110 Rev.1.10 Page 1342 of 1852
Nov 30, 2020
RX23W Group 38. Serial Peripheral Interface (RSPIa)
Table 38.2 lists the I/O pins used in the RSPI.
The RSPI automatically switches the I/O direction of the SSLA0 pin. SSLA0 is set as an output when the RSPI is a single
master and as an input when the RSPI is a multi-master or a slave. Pins RSPCKA, MOSIA, and MISOA are
automatically set as inputs or outputs according to the setting of master or slave and the level input on the SSLA0 pin.
Refer to
section 38.3.2, Controlling RSPI Pins for details.
Table 38.2 RSPI Pin Configuration
Channel Pin Name I/O Function
RSPI0 RSPCKA I/O Clock I/O
MOSIA I/O Master transmit data I/O
MISOA I/O Slave transmit data I/O
SSLA0 I/O Slave selection I/O
SSLA1 Output Slave selection output
SSLA3 Output Slave selection output