APPLICATION NOTE
R01AN6883EJ0100 Rev.1.00 Page 1 of 38
June.15.23
RL78/G13
Handshake-based SPI Master Transmission/Reception
Introduction
This application note describes how the serial array unit (SAU) performs master transmission/reception by
the simple SPI (CSI). The SAU uses the chip select
(CS) signal to select a slave device and perform single
transmission/reception. The SAU also performs handshake processing using the BUSY signal.
Target Device
RL78/G13
When applying the sample program covered in this application note to another microcomputer, modify the
program according to the specifications for the target microcomputer and conduct an extensive evaluation of
the modified program.
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