Datasheet

78K0/Ix2 CHAPTER 18 INTERRUPT FUNCTIONS
R01UH0010EJ0500 Rev.5.00 581
Feb 28, 2012
(2) Interrupt mask flag registers (MK0L, MK0H, MK1L, MK1H)
The interrupt mask flags are used to enable/disable the corresponding maskable interrupt servicing.
MK0L, MK0H, MK1L, and MK1H are set by a 1-bit or 8-bit memory manipulation instruction. When MK0L and MK0H,
and MK1L and MK1H are combined to form 16-bit registers MK0 and MK1, they are set by a 16-bit memory
manipulation instruction.
Reset signal generation sets these registers to FFH.
Figure 18-5. Format of Interrupt Mask Flag Registers (MK0L, MK0H, MK1L) (78K0/IY2)
Address: FFE4H After reset: FFH R/W
Symbol 7 6 <5> <4> <3> 2 <1> <0>
MK0L 1 1 PMK4 PMK3 PMK2 1 PMK0 LVIMK
Address: FFE5H After reset: FFH R/W
Symbol <7> <6> <5> <4> <3> 2 1 0
MK0H TMMK010 TMMK000 TMMKX1 TMMKX0 TMMKH1 1 1 1
Address: FFE6H After reset: FFH R/W
Symbol 7 <6> <5> <4> <3> 2 1 <0>
MK1L 1 CMPMK2 CMPMK1 CMPMK0 TMMK51 1 1 ADMK
XXMKX Interrupt servicing control
0 Interrupt servicing enabled
1 Interrupt servicing disabled
Caution Be sure to set bits 2, 6, and 7 of MK0L, bits 0 to 2 of MK0H, and bits 1, 2, and 7 of MK1L to 1.