MC68HC908QY4CDW Datasheet, PDF (113/184 Pages) Freescale Semiconductor, Inc – Microcontrollers

Exception Control
13.6.2.1 Interrupt Status Register 1
Address: $FE04
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
IF5
IF4
IF3
0
IF1
0
0
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R = Reserved
Figure 13-11. Interrupt Status Register 1 (INT1)
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
Address: $FE05
Bit 7
6
5
4
3
2
1
Bit 0
Read: IF14
0
0
0
0
0
0
0
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R = Reserved
Figure 13-12. Interrupt Status Register 2 (INT2)
IF14 — 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
Address: $FE06
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
0
0
0
0
0
IF15
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R = Reserved
Figure 13-13. Interrupt Status Register 3 (INT3)
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
MC68HC908QY/QT Family Data Sheet, Rev. 6
Freescale Semiconductor
113