392
CHAPTER 19 INTERRUPT FUNCTIONS
User’s Manual U15798EJ2V0UD
(2) Interrupt mask flag registers (MK0L, MK0H, MK1L)
The interrupt mask flags are used to enable/disable the corresponding maskable interrupt servicing.
MK0L, MK0H, and MK1L are set by a 1-bit or 8-bit memory manipulation instruction. When MK0L and MK0H
are combined to form a 16-bit register MK0, they are set by a 16-bit memory manipulation instruction.
RESET input sets the values of these registers to FFH.
Figure 19-3. Format of Interrupt Mask Flag Registers (MK0L, MK0H, MK1L)
Address: FFE4H After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
MK0L
PMK6
PMK5
PMK4
PMK3
PMK2
PMK1
PMK0
WDTMK
Address: FFE5H After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
MK0H
WTNIMK0
IICMK0
Note
CSIMK3
CSIMK1
STMK0
SRMK0
SERMK0
KRMK
Address: FFE6H After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
MK1L
WTNMK0
ADMK0
TMMK51
TMMK50
TMMKB0
TMMKA0
TMMK01
TMMK00
XXMKX
Interrupt servicing control
0
Interrupt servicing enabled
1
Interrupt servicing disabled
Note
µ
PD780344Y, 780354Y Subseries only
Cautions 1. If the watchdog timer is used in watchdog timer mode 1, the contents of the WDTMK flag
become undefined when read.
2. Because port 0 pins have an alternate function as external interrupt request inputs, 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.
Содержание mPD780344 Series
Страница 2: ...2 User s Manual U15798EJ2V0UD MEMO...