MC908QY8CDWE Datasheet, PDF (151/232 Pages) Freescale Semiconductor, Inc – Addendum to MC68HC908QB8, rev. 3

Exception Control
14.6.2.1 Interrupt Status Register 1
Bit 7
6
5
4
3
2
1
Bit 0
Read: IF6
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 14-11. Interrupt Status Register 1 (INT1)
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
Bit 7
6
5
4
3
2
1
Bit 0
Read: IF14
IF13
IF12
IF11
IF10
IF9
IF8
IF7
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R = Reserved
Figure 14-12. Interrupt Status Register 2 (INT2)
IF7–IF14 — 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
Bit 7
6
5
4
3
2
1
Bit 0
Read: IF22
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 14-13. Interrupt Status Register 3 (INT3)
IF15–IF22 — 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
MC68HC908QB8 Data Sheet, Rev. 3
Freescale Semiconductor
149