UPD784938 Datasheet, PDF (567/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 23 INTERRUPT FUNCTIONS
(2) Macro service mode register
The macro service mode register is an 8-bit register that specifies the macro service operation. This register is written
in internal RAM as part of the macro service control word (see Figure 23-20).
The format of the macro service mode register is shown in Figure 23-21.
Figure 23-21. Macro Service Mode Register Format (1/2)
7
6
5
4
3
2
1
0
VCIE MOD2 MOD1 MOD0 CHT3 CHT2 CHT1 CHT0
CHT0
0
CHT1
0
CHT2
0
CHT3
0
MOD2 MOD1 MOD0 Counter Mode
0
0
0 Counter
decrement
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
1
0
0
0
Type A
Data transfer Data size:
direction
1 byte
Memory → SFR
Data transfer
direction
SFR → memory
Data transfer Data size:
direction
2 bytes
Memory → SFR
Data transfer
direction
SFR → memory
0
0
0
1
Type B
Data transfer
direction
Memory → SFR
Data transfer
direction
SFR → memory
Data size:
1 byte
Data transfer
direction
Memory → SFR
Data transfer
direction
SFR → memory
Data size:
2 bytes
VCIE
Interrupt Request when MSC = 0
0 Generated
1 Not generated (next interrupt processing is vectored interrupt)
Preliminary User’s Manual U13987EJ1V0UM00
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