Hitachi H8/3937 Series Hardware Manual page 416

*
SCK V or V
IH OH
31
SCK
V or V
*
32 IL OL
t
TXD
31
TXD
32
(transmit data)
RXD
31
RXD
32
(receive data)
Note: * Output timing reference levels
Output high
Output low
Load conditions are shown in figure 13-7.
Figure 13-6 SCI3 Synchronous Mode Input/Output Timing
404
t
scyc
TXD
*
V
OH
*
V
OL
V = 1/2 V + 0.2 V
OH CC
V = 0.8 V
OL
t
RXS
t
RXH