Datasheet

Exception Control
MC68HC908QB8 Data Sheet, Rev. 3
Freescale Semiconductor 149
14.6.2.1 Interrupt Status Register 1
IF1 and IF3–IF6 — 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, 1, and 3— Always read 0
14.6.2.2 Interrupt Status Register 2
IF7–I
F14 — 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
IF15–I
F22 — 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 7654321Bit 0
Read: IF6 IF5 IF4 IF3 0 IF1 0 0
Write:RRRRRRRR
Reset:00000000
R= Reserved
Figure 14-11. Interrupt Status Register 1 (INT1)
Bit 7654321Bit 0
Read: IF14 IF13 IF12 IF11 IF10 IF9 IF8 IF7
Write:RRRRRRRR
Reset:00000000
R= Reserved
Figure 14-12. Interrupt Status Register 2 (INT2)
Bit 7654321Bit 0
Read: IF22 IF21 IF20 IF19IF18IF17IF16IF15
Write:RRRRRRRR
Reset:00000000
R= Reserved
Figure 14-13. Interrupt Status Register 3 (INT3)