UPD784938 Datasheet, PDF (518/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 22 EDGE DETECTION FUNCTION
Figure 22-1. External Interrupt Mode Register 0 (INTM0) Format
7
6
5
4
3
2
INTM0 ES21 ES20 ES11 ES10 ES01 ES00
1
0 Address After reset R/W
0 ESNM1 0FFA0H
00H
R/W
ESNM1 P20 (NMI) Pin Input Detected Edge
Specification
0 Falling edge
1 Rising edge
ES01 ES00 P21 (INTP0, CR11/CR11W Capture
Trigger, TM1/TM1W Count Clock,
Real-Time Output Port Output Trigger)
Pin Input Detected Edge Specification
0 0 Falling edge
0 1 Rising edge
1 0 Setting prohibited
1 1 Both falling & rising edges
ES11 ES10 P22 (INTP1, CR22/CR22W Capture
Trigger) Pin Input Detected Edge
Specification
0 0 Falling edge
0 1 Rising edge
1 0 Setting prohibited
1 1 Both falling & rising edges
ES21 ES20 P23 (INTP2, CR21/CR21W Capture
Trigger, CI) Pin Input Detected Edge
Specification
0 0 Falling edge
0 1 Rising edge
1 0 Setting prohibited
1 1 Both falling & rising edges
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Preliminary User’s Manual U13987EJ1V0UM00