User System Interface Board User's Manual
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H8SX/1638
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Secti
on 4 User Sys
tem Int
erface Circ
uits
Rev. 3.00 S
ep. 08, 2008 Page 22 of
30
REJ10J
1870-0300
47 k
Ω
Vcc
MCU
SN74CB3Q3306A
P65
SN74CB3Q3306A
P64
P63
SCK6
RxD6
TxD6
Sub-MCU
P65
P64
P63
User system
Figure 15 User System Interface Circuit (4)
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