NEC 78K0 User Manual page 435

(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 input sets MK0L, MK0H, and MK1L to FFH and MK1H to DFH.
Figure 19-3. Format of Interrupt Mask Flag Registers (MK0L, MK0H, MK1L, MK1H)
Address: FFE4H After reset: FFH
Symbol <7>
MK0L SREMK6
Address: FFE5H After reset: FFH
Symbol <7>
MK0H TMMK010
Address: FFE6H After reset: FFH
Symbol <7>
MK1L PMK7
Address: FFE7H After reset: DFH
Symbol 7
Note 1
MK1H 1
XXMKX
0
1
Notes 1. Be sure to set bits 6 and 7 of MK1H to 1 and clear bit 5 to 0.
µ
2. PD780146, 780148, and 78F0148 only. Be sure to set these bits to 1 in the
780144.
CHAPTER 19 INTERRUPT FUNCTIONS
R/W
<6> <5>
PMK5 PMK4 PMK3
R/W
<6> <5>
TMMK000 TMMK50 TMMKH0
R/W
<6> <5>
PMK6 WTMK KRMK
R/W
6 5
*
Note 1 Note 1
1 0 ACSIMK
Interrupt servicing enabled
Interrupt servicing disabled
User's Manual U15947EJ2V0UD
<4> <3> <2>
PMK2 PMK1
<4> <3> <2>
TMMKH1 DUALMK0
<4> <3> <2>
TMMK51 WTIMK
<4> <3> <2>
Note 2
TMMK011 TMMK001
Interrupt servicing control
<1> <0>
PMK0 LVIMK
<1> <0>
STMK6 SRMK6
<1> <0>
SRMK0 ADMK
<1> <0>
Note 2 Note 2
CSIMK11 DMUMK
µ
PD780143 and
435