HD64F2168 Datasheet, PDF (466/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Reception
Read RDRF flag in SSR
RDRF = 1
Yes
Read receive data in RDR
No [1]
RE = 0
Make transition to software standby mode etc.
[2]
Cancel software standby mode etc.
[1] Data being received will be invalid.
[2] Module stop, watch, sub-active, and sub-
sleep modes are included.
Change operating mode?
Yes
Initialization
No
RE = 1
Start reception
Figure 14.42 Sample Flowchart for Mode Transition during Reception
Rev. 3.00, 03/04, page 426 of 830