External Interrupt Mode Register 0 Format; External Interrupt Mode Register 1 Format - NEC PD78081(A) User Manual

(4) External interrupt mode register (INTM0, INTM1)
These registers set the valid edge for INTP1 to INTP3.
INTM0 and INTM1 are set by 8-bit memory manipulation instructions.
RESET input sets these registers to 00H.
Symbol 7 6 5
INTM0 ES31 ES30 ES21
Caution Set 0 to the bits 0 to 3.
Symbol 7 6 5
INTM1 0 0 0
Caution Set 0 to the bits 2 to 7.
CHAPTER 12 INTERRUPT FUNCTION
Figure 12-5. External Interrupt Mode Register 0 Format
4 3 2
ES20 0 0
Figure 12-6. External Interrupt Mode Register 1 Format
4 3 2
0 0 0 ES41
Address
1 0
0 0 FFECH
ES21 ES20
0 0
0
1
1 0
1 1
ES31 ES30
0 0
0 1
1 0
1 1
Address
1 0
ES40 FFEDH
ES41 ES40
0 0
0 1
1 0
1 1
After
R/W
Reset
00H R/W
INTP1 Valid Edge Selection
Falling edge
Rising edge
Setting prohibited
Both falling and rising edges
INTP2 Valid Edge Selection
Falling edge
Rising edge
Setting prohibited
Both falling and rising edges
After
R/W
Reset
00H R/W
INTP3 Valid Edge Selection
Falling edge
Rising edge
Setting prohibited
Both falling and rising edges
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