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| 型号： | SAF-C868A-1SGBA |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 40 MHz, MICROCONTROLLER, PDSO28 |
| 封装： | PLASTIC, SO-28 |
| 文件页数： | 59/82页 |
| 文件大小： | 1252K |
| 代理商： | SAF-C868A-1SGBA |
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C868
Data Sheet
62
V 1.0, 2003-05
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 Table 13
.
Within a column, the topmost interrupt is serviced first, then the second and the third,
when available. The interrupt groups are serviced from left to right of the table. A low-
priority interrupt can itself be interrupted by a higher-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.
Table 13
Interrupt Source Structure
Interrupt
Group
Priority Bits
of Interrupt
Group
Interrupt Source Priority
High Priority
Low
Priority
0
IP0.0
EXINT0
IADC
High
Low
1
IP0.1
TF0
EXINT2
2
IP0.2
EXINT1
EXINT3
INP01)
1) Capture/compare has 10 interrupt sources channeled to the 4 interrupt nodes INP0..3. The 3 capture/
compare ports has 3 pairs of interrupt request flags, ICC60R, ICC60F, ICC61R, ICC61F, ICC62R, ICC62F.
The other flags are T12OM, T12PM, T13CM, T13PM, TRPF, WHE, CHE.
3
IP0.3
TF1
INP11)
4
IP0.4
RI + TI
INP21)
5
IP0.5
TF2
INP31)
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