mc68hc908kx8 Freescale Semiconductor, Inc, mc68hc908kx8 Datasheet - Page 149

• Manufacturer Part Number: mc68hc908kx8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

13.7.2 Interrupt Status Registers
The flags in the interrupt status registers identify maskable interrupt sources. The interrupt sources and
the interrupt status register flags that they set are summarized in
can be useful for debugging.
13.7.2.1 Interrupt Status Register 1
IF5–IF1 — Interrupt Flags 5, 4, 3, 2, and 1
Freescale Semiconductor
These flags indicate the presence of interrupt requests from the sources shown in
1 = Interrupt request present
0 = No interrupt request present
SWI instruction
IRQ1 pin
ICG clock monitor
TIM channel 0
TIM channel 1
TIM overflow
SCI receiver overrun error
SCI receiver noise error
SCI receiver framing error
SCI receiver parity error
SCI receiver full
SCI receiver idle
SCI transmitter empty
SCI transmission complete
Keyboard pins
ADC conversion complete
Timebase module
1. The I bit in the condition code register is a global mask for all interrupt sources except the SWI
2. 0 = highest priority
Address:
instruction.
Reset:
Read:
Write:
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 Data Sheet, Rev. 2.1
Source
$FE04
Bit 7
IF6
R
R
0
Figure 13-17. Interrupt Status Register 1 (INT1)
= Reserved
IF5
R
6
0
Table 13-2. Interrupt Sources
IRQF1
SCRF
SCTE
CH0F
CH1F
KEYF
CMF
IDLE
TBIE
Flag
TOF
OR
NF
TC
FE
PE
—
—
IF4
R
5
0
IMASKK
IMASK1
Mask
CH0IE
CH1IE
SCRIE
SCTIE
CMIE
ORIE
TOIE
NEIE
TCIE
AIEN
FEIE
PEIE
TBF
ILIE
—
IF3
R
4
0
(1)
Register
Flag
IF11
IF12
IF13
IF14
IF15
IF16
INT
IF1
IF2
IF3
IF4
IF5
—
IF2
R
3
0
Table
Priority
IF1
R
2
0
13-2. The interrupt status registers
10
11
0
1
2
3
4
5
6
7
8
9
(2)
R
$FFDC–$FFDD
1
0
0
$FFDE–$FFDF
$FFFC–$FFFD
$FFFA–$FFFB
$FFF8–$FFF9
$FFF6–$FFF7
$FFF4–$FFF5
$FFF2–$FFF3
$FFE6–$FFE7
$FFE4–$FFE5
$FFE2–$FFE3
$FFE0–$FFE1
Address
Vector
Table
Bit 0
R
0
0
SIM Registers
13-2.
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