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(2)
Reception
Before making the transition to module stop, software standby or watch mode, stop reception (RE
= 0). RSR, RDR, and SSR are reset. If transition is made during data reception, the data being
received will be invalid.
To receive data in the same reception mode after mode cancellation, set RE to 1, and then start
reception. To receive data in a different reception mode, initialize the SCI first.
Figure 14.36 shows a sample flowchart for mode transition during reception.
Read RDRF flag in SSR
Read receive data in RDR
Make transition to
software standby mode etc.
Cancel software standby mode etc.
Change operating mode
Initialization
Start reception
Figure 14.36 Sample Flowchart for Mode Transition during Reception
Reception
No
RDRF = 1
Yes
RE = 0
No
Yes
Section 14 Serial Communication Interface (SCI)
[1]
[1] Data being received will be invalid.
[2] Module stop mode and watch mode are
included.
[2]
RE = 1
Rev. 1.00 May 09, 2008 Page 425 of 954
REJ09B0462-0100
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