MC68HC908GR8 Datasheet, PDF (54/286 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Resets and Interrupts
4.3.3.1 Interrupt Status Register 1
Address: $FE04
Bit 7
6
5
4
3
2
Read: IF6
IF5
IF4
IF3
IF2
IF1
Write: R
R
R
R
R
R
Reset: 0
0
0
0
0
0
R = Reserved
1
Bit 0
0
0
R
R
0
0
Figure 4-6. Interrupt Status Register 1 (INT1)
IF6–IF1 — Interrupt Flags 6–1
These flags indicate the presence of interrupt requests from the sources shown in Table 4-2.
1 = Interrupt request present
0 = No interrupt request present
Bit 1 and Bit 0 — Always read 0
4.3.3.2 Interrupt Status Register 2
Address: $FE05
Bit 7
6
5
4
3
2
Read: IF14
IF13
IF12
IF11
IF10
IF9
Write: R
R
R
R
R
R
Reset: 0
0
0
0
0
0
1
Bit 0
IF8
0
R
R
0
0
R = Reserved
Figure 4-7. Interrupt Status Register 2 (INT2)
IF14–IF8 — Interrupt Flags 14–7
These flags indicate the presence of interrupt requests from the sources shown in Table 4-2.
1 = Interrupt request present
0 = No interrupt request present
Bit 0 — Always reads 0
4.3.3.3 Interrupt Status Register 3
Address: $FE06
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
0
0
0
0
IF16
IF15
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R = Reserved
Figure 4-8. Interrupt Status Register 3 (INT3)
IF16–IF15 — Interrupt Flags 16–15
This flag indicates the presence of an interrupt request from the source shown in Table 4-2.
1 = Interrupt request present
0 = No interrupt request present
Bits 7–2 — Always read 0
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
54
Freescale Semiconductor