MC68HC11P2 Datasheet, PDF (211/268 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Resets and Interrupts
Low power operation
Begin
RDRF = 1?
Yes
No
Note: The bit names shown are for SCI1. The diagram
applies equally to SCI2 and SCI3, when the
appropriate bit names are substituted.
OR = 1?
Yes
No
TDRE = 1?
Yes
No
TC = 1?
Yes
No
RIE = 1?
Yes
No
TIE = 1?
Yes
No
TCIE = 1?
Yes
No
RE = 1?
Yes
No
TE = 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 10-6. Interrupt source resolution within the SCI subsystem
MC68HC11P2 — Rev 1.0
Resets and Interrupts
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Technical Data