mc68hc908gr8b Freescale Semiconductor, Inc, mc68hc908gr8b Datasheet - Page 166

• Manufacturer Part Number: mc68hc908gr8b
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

System Integration Module (SIM)
Interrupt Status Register 2
I14–I7 — Interrupt Flags 14–7
Interrupt Status Register 3
Bits 7–6 — Always read 0
I16 and I15 — Interrupt Flags 16 and 15
14.5.2 Reset
All reset sources always have equal and highest priority and cannot be arbitrated.
14.5.3 Break Interrupts
The break module can stop normal program flow at a software-programmable break point by asserting its
break interrupt output (see
into the break state by forcing it to the SWI vector location. Refer to the break interrupt subsection of each
module to see how each module is affected by the break state.
14.5.4 Status Flag Protection in Break Mode
The SIM controls whether status flags contained in other modules can be cleared during break mode. The
user can select whether flags are protected from being cleared by properly initializing the break clear flag
enable bit (BCFE) in the SIM break flag control register (SBFCR).
166
These flags indicate the presence of interrupt requests from the sources shown in
These flags indicate the presence of an interrupt request from the source shown in
1 = Interrupt request present
0 = No interrupt request present
1 = Interrupt request present
0 = No interrupt request present
Address:
Address:
Reset:
Reset:
Read:
Read:
Write:
Write:
$FE05
$FE06
Bit 7
Bit 7
I14
R
R
R
R
0
0
0
Figure 14-13. Interrupt Status Register 2 (INT2)
Figure 14-14. Interrupt Status Register 3 (INT3)
Chapter 17 Timer Interface Module (TIM1 and
= Reserved
= Reserved
I13
R
R
6
0
6
0
0
MC68HC908GR8B Data Sheet, Rev. 3.0
I12
R
R
5
0
5
0
0
I11
R
R
4
0
4
0
0
I10
R
R
3
0
3
0
0
I9
R
R
2
0
2
0
0
TIM2)). The SIM puts the CPU
I16
I8
R
R
1
0
1
0
Freescale Semiconductor
Table
Bit 0
Bit 0
Table
I15
I7
R
R
0
0
14-3.
14-3.