MC68HC11KW1 Datasheet, PDF (142/238 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

Begin
RDRF = 1? ^Yes
No
OR = 1?
Yes
No
RIE = 1?
Yes
No
RE = 1?
Yes
No
TDRE = 1? ^Yes
No
TIE = 1?
Yes
No
TE = 1?
Yes
No
TC = 1?
Yes
TCIE = 1?
Yes
7
No
No
IDLE = 1? ^Yes
ILIE = 1?
Yes
RE = 1?
Yes
No
No
No
No valid SCI
interrupt request
Valid SCI
interrupt request
Figure 7-3 Interrupt source resolution within SCI
7-14
SERIAL COMMUNICATIONS INTERFACE
MC68HC11KW1