MC68HC908GR16 Datasheet, PDF (208/310 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
System Integration Module (SIM)
Interrupt Status
Register 1
Interrupt Status
Register 2
Interrupt Status
Register 3
Data Sheet
208
Address: $FE04
Bit 7
6
5
4
3
2
1
Bit 0
Read: I6
I5
I4
I3
I2
I1
0
0
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R
= Reserved
Figure 15-13. Interrupt Status Register 1 (INT1)
I6–I1 — Interrupt Flags 1–6
These flags indicate the presence of interrupt requests from the sources shown
in Table 15-3.
1 = Interrupt request present
0 = No interrupt request present
Bit 0 and Bit 1 — Always read 0
Address: $FE05
Bit 7
6
5
4
3
2
Read: I14
I13
I12
I11
I10
I9
Write: R
R
R
R
R
R
Reset: 0
0
0
0
0
0
R
= Reserved
1
Bit 0
I8
I7
R
R
0
0
Figure 15-14. Interrupt Status Register 2 (INT2)
I14–I7 — Interrupt Flags 14–7
These flags indicate the presence of interrupt requests from the sources shown
in Table 15-3.
1 = Interrupt request present
0 = No interrupt request present
Address: $FE06
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
I20
I19
I18
I17
I16
I15
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R
= Reserved
Figure 15-15. Interrupt Status Register 3 (INT3)
Bits 7–6 — Always read 0
I20–I15 — Interrupt Flags 20–15
These flags indicate the presence of an interrupt request from the source shown
in Table 15-3.
1 = Interrupt request present
0 = No interrupt request present
System Integration Module (SIM)
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MC68HC908GR16 — Rev. 1.0
MOTOROLA