mc68hc908qf4 Freescale Semiconductor, Inc, mc68hc908qf4 Datasheet - Page 130

• Manufacturer Part Number: mc68hc908qf4
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

System Integration Module (SIM)
14.6.2 Interrupt Status Registers
14.6.2.1 Interrupt Status Register 1
Data Sheet
130
The flags in the interrupt status registers identify maskable interrupt sources.
Table 14-3
that they set. The interrupt status registers can be useful for debugging.
IF1 and IF3–IF5 — Interrupt Flags
Bit 0, 1, 3, and 7 — Always read 0
Priority
Highest
Lowest
1. The I bit in the condition code register is a global mask for all interrupt sources except the SWI
Address: $FE04
These flags indicate the presence of interrupt requests from the sources shown
in
instruction.
Reset:
Read:
Write:
Table
1 = Interrupt request present
0 = No interrupt request present
Freescale Semiconductor, Inc.
For More Information On This Product,
Reset
SWI instruction
IRQ pin
Timer channel 0 interrupt
Timer channel 1 interrupt
Timer overflow interrupt
Keyboard interrupt
ADC conversion complete interrupt
summarizes the interrupt sources and the interrupt status register flags
14-3.
Bit 7
R
R
0
0
Figure 14-12. Interrupt Status Register 1 (INT1)
System Integration Module (SIM)
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= Reserved
Source
IF5
R
6
0
Table 14-3. Interrupt Sources
IF4
R
5
0
IF3
R
4
0
COCO
CH0F
CH1F
KEYF
IRQF
Flag
TOF
—
—
IMASKK
R
Mask
3
0
0
IMASK
CH0IE
CH1IE
TOIE
AIEN
—
—
(1)
IF1
MC68HC908QF4 — Rev. 1.0
Register
R
2
0
Flag
IF14
IF15
INT
IF1
IF3
IF4
IF5
—
—
R
1
0
0
$FFFC–$FFFD
$FFDE–$FFDF
$FFFE–$FFFF
$FFFA–$FFFB
$FFE0–$FFE1
$FFF6–$FFF7
$FFF4–$FFF5
$FFF2–$FFF3
Address
MOTOROLA
Vector
Bit 0
R
0
0