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CHAPTER 21 INTERRUPT AND TEST FUNCTIONS
7
PMK6
Symbol
MK0L
6
PMK5
5
PMK4
4
PMK3
3
PMK2
2
PMK
1
PMK
0
TMMK4
Address
FFE4H FFH
After
Reset R/W
R/W
× ×
MK
×
0
1
Interrupt Servicing Control
Interrupt servicing enabled
Interrupt servicing disabled
7
TMMK01
MK0H
6
TMMK00
5
TMMK3
4
STMK
3
SRMK
2
SERMK
1
CSIMK1
0
CSIMK0
7
WTMK
Note
MK1L
6
1
5
1
4
1
3
1
2
ADMK
1
TMMK2
0
TMMK1
FFE5H FFH R/W
FFE6H FFH R/W
Note WTMK controls enable/disable of cancellation of the standby mode. It does not control the interruptfunction.Cautions 1. If TMMK4 flag is read when a watchdog timer is used in watchdog timer mode 1, MK0 valuebecomes undefined.2. Because port 0 has an alternate function as the external interrupt request input, whenthe output level is changed by specifying the output mode of the port function, aninterrupt request flag is set. Therefore, 1 should be set in the interrupt mask flag beforeusing the output mode.3. Set always 1 in MK1L bits 3 to 6.(2) Interrupt mask flag registers (MK0L, MK0H, MK1L)The interrupt mask flag is used to enable/disable the corresponding maskable interrupt service and to setstandby clear enable/disable.MK0L, MK0H, and MK1L are set with a 1-bit or 8-bit memory manipulation instruction. If MK0L and MK0Hare 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 21-3. Interrupt Mask Flag Register Format