sak-c868p-1rr Infineon Technologies Corporation, sak-c868p-1rr Datasheet - Page 216
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sak-c868p-1rr
Manufacturer Part Number
sak-c868p-1rr
Description
8 - Bit Cmos Microcontroller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.SAK-C868P-1RR.pdf
(266 pages)
- Current page: 216 of 266
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7.3
The 13 interrupt sources of C868 are grouped according to the listing in
Table 7-1
Interrupt
Group
0
1
2
3
4
5
Each group of interrupt sources can be programmed individually to one of four priority
levels by setting or clearing the bits in the special function registers IP1 and IP0. A low-
priority interrupt can be interrupted by a high-priority interrupt, but not by another
interrupt of the same or a lower priority. An interrupt of the highest priority level cannot
be interrupted by another interrupt source.
lf two or more requests of different priority levels are received simultaneously, the
request of the highest priority is serviced first. lf requests of the same priority level are
received simultaneously, an internal polling sequence determines which request is to be
serviced first. Thus, within each priority level there is a second priority structure
determined by the polling sequence. This is illustrated in
User’s Manual
Associated Interrupts
External interrupt
0
Timer 0 Overflow External interrupt
External interrupt
1
Timer 1 overflow
Serial interrupt
Timer 2 overflow
Interrupt Priority Level Structure
Interrupt Source Structure
A/D converter
interrupt
2
External interrupt
3
7-32
Capture/compare
interrupt node 0
Capture/compare
interrupt node 1
Capture/compare
interrupt node 2
Capture/compare
interrupt node 3
Table
7-2.
Interrupt System
Table
V 1.0, 2003-01
7-1.
C868
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