saa-xc886clm Infineon Technologies Corporation, saa-xc886clm Datasheet - Page 68

• Manufacturer Part Number: saa-xc886clm
• Description: 8-bit Single Chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.4.3
An interrupt that is currently being serviced can only be interrupted by a higher-priority
interrupt, but not by another interrupt of the same or lower priority. Hence, an interrupt of
the highest priority cannot be interrupted by any other interrupt request.
If two or more requests of different priority levels are received simultaneously, the
request of the highest priority is serviced first. If requests of the same priority are
received simultaneously, then an internal polling sequence determines which request is
serviced first. Thus, within each priority level, there is a second priority structure
determined by the polling sequence shown in
Table 20
Source
Non-Maskable Interrupt (NMI)
External Interrupt 0
Timer 0 Interrupt
External Interrupt 1
Timer 1 Interrupt
UART Interrupt
Timer 2,UART Normal Divider Overflow,
MultiCAN, LIN Interrupt
ADC, MultiCAN Interrupt
SSC Interrupt
External Interrupt 2, Timer 21, UART1, UART1
Normal Divider Overflow, MDU, CORDIC Interrupt
External Interrupt [6:3], MultiCAN Interrupt
CCU6 Interrupt Node Pointer 0, MultiCAN interrupt 11
CCU6 Interrupt Node Pointer 1, MultiCAN Interrupt 12
CCU6 Interrupt Node Pointer 2, MultiCAN Interrupt 13
CCU6 Interrupt Node Pointer 3, MultiCAN Interrupt 14
Data Sheet
Interrupt Priority
Priority Structure within Interrupt Level
61
Table
Level
(highest)
1
2
3
4
5
6
7
8
9
10
20.
Functional Description
SAA-XC886CLM
V1.0, 2009-09