1 interrupt status register 1, Interrupt status register 1, Interrupt status register 1 (int1) – Freescale Semiconductor MC68HC08KH12 User Manual
Page 77
MC68HC(7)08KH12
—
Rev. 1.1
Advance Information
Freescale Semiconductor
77
7.6.2.1 Interrupt Status Register 1
I
F
6–I
F
1 — Interrupt Flags 1–6
These flags indicate the presence of interrupt requests from the
sources shown in
.
1 = Interrupt request present
0 = No interrupt request present
Bit 0 and Bit 1 — Always read 0
Port-D Keyboard Pin Interrupt
KEYDF
IMASKD
IF9
9
$FFEA–$FFEB
Port-F Keyboard Pin Interrupt
KEYFF
IMASKF
IF10
10
$FFE8–$FFE9
Phase-locked Loop Interrupt
PLLF
PLLIE
IF11
11
$FFE6–$FFE7
(1) The I bit in the condition code register is a global mask for all interrupts sources except the SWI instruction.
(2) 0= highest priority
Table 7-3. Interrupt Sources
Source
Flag
Mask
(1)
INT
Register
Flag
Priority
(2)
Vector Address
Address:
$FE04
Bit 7
6
5
4
3
2
1
Bit 0
Read:
IF6
IF5
IF4
IF3
IF2
IF1
0
0
Write:
R
R
R
R
R
R
R
R
Reset:
0
0
0
0
0
0
0
0
R
= Reserved
Figure 7-12. Interrupt Status Register 1 (INT1)