MC68HC11KW1 Datasheet, PDF (112/238 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
5
TDRE = 1? ^Yes
TIE = 1?
Yes
TE = 1?
Yes
No
No
No
TC = 1?
Yes
No
TCIE = 1?
Yes
No
IDLE = 1? ^Yes
No
No valid SCI
interrupt request
ILIE = 1?
Yes
No
RE = 1?
No
Yes
Valid SCI
interrupt request
Figure 5-6 Interrupt source resolution within the SCI subsystem
5-22
RESETS AND INTERRUPTS
MC68HC11KW1