User`s manual

24
P20, P21, P23
P34 to P37
P63 to P67
PA0 to PA2
PI0 to PI3
PJ0 to PJ7
PK0 to PK7
MCU
VHCT125
VHC125
PF0 to PF4,
PF6, PF7
MCU
VHCT125
VHC125
CB3Q3306
P22
MCU
VHCT125
VHC125
P22
Sub-MCU
P22
CB3Q3306
LVC07
VCC
47 kΩ
VCC
VCC
47 kΩ
P20, P21, P23
P34 to P37
P63 to P67
PA0 to PA2
PI0 to PI3
PJ0 to PJ7
PK0 to PK7
User system
interface cable
P20, P21, P23
P34 to P37
P63 to P67
PA0 to PA2
PI0 to PI3
PJ0 to PJ7
PK0 to PK7
1 kΩ
Sub-MCU
3 V
User system
interface cable
Sub-MCU
User system
interface cable
47 kΩ
PF0 to PF4,
PF6, PF7
PF0 to PF4,
PF6, PF7
Figure 3.2 User System Interface Circuits (5)