NEC 78014Y Series User Manual page 184

(5) External interrupt mode register (INTM0)
This register is used to set INTP0 to INTP2 valid edges.
INTM0 is set with an 8-bit memory manipulation instruction.
RESET input sets INTM0 value to 00H.
Remarks 1. INTP0 pin is a dual function pin also used for TI0/P00.
Symbol 7
INTM0 ES31
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Caution To specify the INTP0/P00/TI0 pin valid edge, bit 1 to bit 3 (TMC01 to TMC03) of the 16-bit timer mode
control register (TMC0) must be set to 0, 0, 0, respectively after timer operaton is stopped.
184
CHAPTER 8 16-BIT TIMER/EVENT COUNTER
2. INTP3 is fixed at the falling edge.
Figure 8-8. External Interrupt Mode Register Format
6 5 4 3
ES30 ES21 ES20 ES11
2 1 0 Address
ES10 0 0 FFECH
ES11
0
0
1
1
ES21
0
0
1
1
ES31
0
0
1
1
When Reset R/W
00H R/W
ES10 INTP0 Valid Edge Selection
0 Falling edge
1 Rising edge
0 Setting prohibited
1 Both falling and rising edge
ES20 INTP1 Valid Edge Selection
0 Falling edge
1 Rising edge
0 Setting prohibited
1 Both falling and rising edge
ES30 INTP2 Valid Edge Selection
0 Falling edge
1 Rising edge
0 Setting prohibited
1 Both falling and rising edge