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HD404459 Datasheet, PDF (119/122 Pages) Renesas Technology Corp – 4-bit HMCS400-series microcomputers | |||
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STOPC
HD404459 Series
0.9VCC
0.1VCC
tSTPL
tSTPr
Figure 91 STOPC Timing
SCK
t SCKf
VCC â 0.5 V (0.9VCC )*
0.4 V (0.1VCC)*
t DSO
SO
SI
t Scyc
t SCKL
t SCKr
t SCKH
VCC â 0.5 V
0.4 V
t SSI
t HSI
0.9V CC
0.1VCC
Note: * VCC â 0.5 V and 0.4 V are the threshold voltages for transmit clock output, and
0.9VCC and 0.1VCC are the threshold voltages for transmit clock input.
Figure 92 Serial Interface Timing
Test
point
C=
30 pF
VCC
RL = 2.6 kâ¦
R=
12 kâ¦
1S2074 H
or equivalent
Figure 93 Timing Load Circuit
117
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