RL78/G1P
CHAPTER 11 SERIAL ARRAY UNIT
R01UH0895EJ0100 Rev.1.00
418
Nov 29, 2019
Figure 11-90. Flowchart of Slave Reception (in Single-Reception Mode)
Starting CSI communication
Write STmn bit to 1
Reception completed?
No
Yes
End of communication
Reading receive data to
SIOp (=SDRmn[7:0])
For the initial setting, see
Figure 11-86
.
(Select transfer end interrupt only)
SAU default setting
Start communication when master start providing
the clock
When transmit end, interrupt is generated
Wait for receive completes
RETI
Transfer end interrupt
Read receive data then writes to storage area, and counts
up the number of receive data.
Update receive data pointer.
Check completion of number of receive data
Ready for reception
Clear storage area setting and the number of receive data
(Storage area, Reception data pointer, Number of communication data and
Communication end flag are optionally set on the internal RAM by the software)
Enables interrupt
Clear interrupt request flag (XXIF), reset interrupt mask (XXMK) and set
interrupt enable (EI).
Disable interrupt (MASK)
Main r
outine
M
ain ro
utine
Inter
rup
t p
rocessing
routine