MC908AP16CFAE Datasheet, PDF (107/324 Pages) Freescale Semiconductor, Inc – Table of Contents

Exception Control
7.5.2.1 Interrupt Status Register 1
Address: $FE04
Bit 7
6
5
4
3
2
1
Bit 0
Read: IF6
IF5
IF4
IF3
IF2
IF1
0
0
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R
= Reserved
Figure 7-12. Interrupt Status Register 1 (INT1)
IF6–IF1 — Interrupt Flags 6–1
These flags indicate the presence of interrupt requests from the sources shown in Table 7-3.
1 = Interrupt request present
0 = No interrupt request present
Bit 0 and Bit 1 — Always read 0
7.5.2.2 Interrupt Status Register 2
Address: $FE05
Bit 7
6
5
4
3
2
Read: IF14
IF13
IF12
IF11
IF10
IF9
1
Bit 0
IF8
IF7
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R
= Reserved
Figure 7-13. Interrupt Status Register 2 (INT2)
IF14–IF7 — Interrupt Flags 14–7
These flags indicate the presence of interrupt requests from the sources shown in Table 7-3.
1 = Interrupt request present
0 = No interrupt request present
7.5.2.3 Interrupt Status Register 3
Address: $FE06
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
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 7-14. Interrupt Status Register 3 (INT3)
IF21–IF15 — Interrupt Flags 21–15
These flags indicate the presence of an interrupt request from the source shown in Table 7-3.
1 = Interrupt request present
0 = No interrupt request present
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor
107