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6. About Hardware
PIO-16/16L(CB)H
49
Block Diagram
PIO-16/16L(CB)H
Car
dB
U
S
External Digital
Input Port 0
(8 points, Group 0)
External Ditigal
Input Port 1
(8 points, Group 1)
External Digital
Output Port 0
(8 points, Group 2)
External Digital
Output Port 1
(8 points, Group 3)
Interrupt
Control
Control
Circuits
Optocoupler
&
transistor
Optocoupler
Optocoupler
Optocoupler
&
transistor
Figure 6.1. Block Diagram