17
P23
P27
P23
P27
SN74CB3Q3306A
SN74CB3Q3306A
MCU User system
Figure 12 User System Interface Circuit (2)
MCU User system
Sub-MCU
P14 P14
SN74CB3Q3306A
TXD
SN74CB3Q3306A
Figure 13 User System Interface Circuit (3)