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CHAPTER 12 INTERRUPT FUNCTIONS
User’s Manual U15104EJ2V0UD
(2) Interrupt mask flag registers (MK0L, MK0H)
The interrupt mask flags are used to enable/disable the corresponding maskable interrupt servicing and to
set standby clear enable/disable.
MK0L and MK0H are set with a 1-bit or 8-bit memory manipulation instruction. If MK0L and MK0H are used
as a 16-bit register MK0, use a 16-bit memory manipulation instruction for the setting.
Reset input sets these registers to FFH.
Figure 12-3. Format of Interrupt Mask Flag Registers (MK0L, MK0H)
××
MK
×
Interrupt servicing control
0
Interrupt servicing enabled
1
Interrupt servicing disabled
Cautions 1. If the WDTMK flag is read when the watchdog timer is used in watchdog timer mode 1,
MK0 value becomes undefined.
2. Because port 0 functions alternately as the external interrupt request input, when the
output level is changed by specifying the output mode of the port function, an interrupt
request flag is set. Therefore, the interrupt mask flag should be set to 1 before using the
output mode.
CSIMK31
TMMK53
KYMK
TMMK52
PMK4
TMMK51
PMK3
TMMK50
PMK2
CSIMK30
PMK1
CSIMK32
PMK0
ADMK
WDTMK
BTMMK0
MK0L
MK0H
R/W
R/W
R/W
FFE4H
FFE5H
FFH
FFH
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
After reset
Address
Symbol
Содержание mPD178053
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