mc68hc908gr8a Freescale Semiconductor, Inc, mc68hc908gr8a Datasheet - Page 167
mc68hc908gr8a
Manufacturer Part Number
mc68hc908gr8a
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GR8A.pdf
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14.5.1.3 Interrupt Status Registers
The flags in the interrupt status registers identify maskable interrupt sources.
interrupt sources and the interrupt status register flags that they set. The interrupt status registers can be
useful for debugging.
Interrupt Status Register 1
I6–I1 — Interrupt Flags 1–6
Bit 0 and Bit 1 — Always read 0
Freescale Semiconductor
These flags indicate the presence of interrupt requests from the sources shown in
1 = Interrupt request present
0 = No interrupt request present
Address:
Reset:
Read:
Write:
Priority
Highest
Lowest
$FE04
Bit 7
I6
R
R
0
Figure 14-12. Interrupt Status Register 1 (INT1)
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
= Reserved
I5
R
6
0
ADC conversion complete
Table 14-3. Interrupt Sources
SPI transmitter empty
CGM clock monitor
Timebase module
Interrupt Source
SCI receive error
TIM1 channel 0
TIM1 channel 1
TIM2 channel 0
TIM2 channel 1
SPI receiver full
SWI instruction
TIM1 overflow
TIM2 overflow
SCI transmit
SCI receive
I4
R
5
0
Keyboard
IRQ pin
Reset
I3
R
4
0
I2
R
3
0
Interrupt Status
Register Flag
I1
R
2
0
I10
I11
I12
I13
I14
I15
I16
—
—
I2
I3
I4
I5
I6
I7
I8
I1
I9
Table 14-3
R
1
0
0
Table
Bit 0
R
0
0
Exception Control
summarizes the
14-3.
167
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