Datasheet

Exception Control
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor 107
7.5.2.1 Interrupt Status Register 1
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
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
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
Address: $FE04
Bit 7654321Bit 0
Read: IF6 IF5 IF4 IF3 IF2 IF1 0 0
Write: RRRRRRRR
Reset:00000000
R = Reserved
Figure 7-12. Interrupt Status Register 1 (INT1)
Address: $FE05
Bit 7654321Bit 0
Read: IF14 IF13 IF12 IF11 IF10 IF9 IF8 IF7
Write: RRRRRRRR
Reset:00000000
R = Reserved
Figure 7-13. Interrupt Status Register 2 (INT2)
Address: $FE06
Bit 7654321Bit 0
Read: 0 IF21 IF20 IF19 IF18 IF17 IF16 IF15
Write: RRRRRRRR
Reset:00000000
R = Reserved
Figure 7-14. Interrupt Status Register 3 (INT3)