Datasheet

Exception Control
MC68HC908QY/QT Family Data Sheet, Rev. 6
Freescale Semiconductor 113
13.6.2.1 Interrupt Status Register 1
IF1 and IF3–IF5 — Interrupt Flags
These flags indicate the presence of interrupt requests from the sources shown in Table 13-3.
1 = Interrupt request present
0 = No interrupt request present
Bit 0, 1, 3, and 7 — Always read 0
13.6.2.2 Interrupt Status Register 2
I
F14 — Interrupt Flags
This flag indicates the presence of interrupt requests from the sources shown in Table 13-3.
1 = Interrupt request present
0 = No interrupt request present
Bit 0–6 — Always read 0
13.6.2.3 Interrupt Status Register 3
IF15 — Interrupt Flags
These flags indicate the presence of interrupt requests from the sources shown in Table 13-3.
1 = Interrupt request present
0 = No interrupt request present
Bit 1–7 — Always read 0
Address: $FE04
Bit 7654321Bit 0
Read: 0 IF5 IF4 IF3 0 IF1 0 0
Write:RRRRRRRR
Reset:00000000
R= Reserved
Figure 13-11. Interrupt Status Register 1 (INT1)
Address: $FE05
Bit 7654321Bit 0
Read:IF140000000
Write:RRRRRRRR
Reset:00000000
R= Reserved
Figure 13-12. Interrupt Status Register 2 (INT2)
Address: $FE06
Bit 7654321Bit 0
Read:0000000IF15
Write:RRRRRRRR
Reset:00000000
R= Reserved
Figure 13-13. Interrupt Status Register 3 (INT3)