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MC68HC908QC16_07 Datasheet, PDF (163/274 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Exception Control
14.6.2.1 Interrupt Status Register 1
Bit 7
6
5
4
3
2
Read: IF6
IF5
IF4
IF3
IF2
IF1
Write: R
R
R
R
R
R
Reset: 0
0
0
0
0
0
R = Reserved
1
Bit 0
0
0
R
R
0
0
Figure 14-11. Interrupt Status Register 1 (INT1)
IF1âIF6 â Interrupt Flags
These flags indicate the presence of interrupt requests from the sources shown in Table 14-3.
1 = Interrupt request present
0 = No interrupt request present
Bit 0 and 1â Always read 0
14.6.2.2 Interrupt Status Register 2
Bit 7
6
5
4
3
2
1
Bit 0
Read: IF14
IF13
IF12
IF11
IF10
IF9
IF8
IF7
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R = Reserved
Figure 14-12. Interrupt Status Register 2 (INT2)
IF7âIF14 â Interrupt Flags
This flag indicates the presence of interrupt requests from the sources shown in Table 14-3.
1 = Interrupt request present
0 = No interrupt request present
14.6.2.3 Interrupt Status Register 3
Bit 7
6
5
4
3
2
1
Bit 0
Read: IF22
IF21
IF20
IF19
IF18
IF17
IF16
IF15
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R = Reserved
Figure 14-13. Interrupt Status Register 3 (INT3)
IF22âIF15 â Interrupt Flags
These flags indicate the presence of interrupt requests from the sources shown in Table 14-3.
1 = Interrupt request present
0 = No interrupt request present
14.6.3 Reset
All reset sources always have equal and highest priority and cannot be arbitrated.
MC68HC908QC16 ⢠MC68HC908QC8 ⢠MC68HC908QC4 Data Sheet, Rev. 3
Freescale Semiconductor
163
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