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Chapter 8
Interrupt/Exception Processing Function
Preliminary User’s Manual U15839EE1V0UM00
8.4 Noise Elimination Circuit
V850E/CA2 is provided with input filter for noise suppression for ports P3 to P5 and on all interrupt and
timer G, timer C control inputs. For peripheral interrupts, programmable edge detection is available.
Inputs for Timer G are equipped with edge detection and need only noise suppression.
Figure 8-14:
Port Interrupt Input Circuit (P52, P53, P61, P62, P63, P64)
Figure 8-15:
Timer G Input Circuit (P30, P35, P40, P45, P54, P55)
Figure 8-16:
NMI Input Circuit
Note: Edge select circuit is different for NMI and INTPn. NMI can only configured as rising or falling
edge sensitive whereas INTPn can be triggered by rising, falling or both edges.
Input
Noise Filter
Edge Detect
ESn1 ESn0
INT (CPU)
Input
Noise Filter
Edge Detect
ESn1 ESn0
INT (CPU)
TInm (TMC, TMG)
Input
Noise Filter
Edge Detect
ESn0
INT (CPU)
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