CHAPTER 19 INTERRUPT FUNCTIONS
Page 718 of 920
19.3.4
External interrupt rising edge enable registers (EGP0, EGP1), external
interrupt falling edge enable registers (EGN0, EGN1)
These registers specify the valid edge for INTPn pin.
The EGP0, EGP1, EGN0, and EGN1 registers can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears these registers to 00H.
Figure 19 - 8 Format of External Interrupt Rising Edge Enable Registers (EGP0, EGP1) and External Interrupt
Falling Edge Enable Registers (EGN0, EGN1)
Address: FFF38H
After reset: 00H
Symbol
7
6
5
4
3
2
1
0
EGP7
EGP6
0
EGP4
EGP3
0
0
EGP0
Address: FFF39H
After reset: 00H
Symbol
7
6
5
4
3
2
1
0
EGN7
EGN6
0
EGN4
EGN3
0
0
EGN0
Address: FFF3AH
After reset: 00H
Symbol
7
6
5
4
3
2
1
0
0
0
0
0
EGP11
EGP10
EGP9
0
Address: FFF3BH
After reset: 00H
Symbol
7
6
5
4
3
2
1
0
0
0
0
0
EGN11
EGN10
EGN9
0
EGPn
EGNn
INTPn pin valid edge selection (n = 0 to 11)
0
0
Edge detection disabled
0
1
Falling edge
1
0
Rising edge
1
1
Both rising and falling edges
Summary of Contents for RL78/G1H
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