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(9) Notes on I
2
C Bus Interface Stop Condition Instruction Issuance
If the rise time of the 9th SCL acknowledge exceeds the specification because the bus load
capacitance is large, or if there is a slave device of the type that drives SCL low to effect a
wait, issue the stop condition instruction after reading SCL and determining it to be low, as
shown below.
As waveform rise is late,
SCL is detected as low
9th clock
SCL
SDA
IRIC
High period secured
Stop condition
[2] Stop condition instruction issuance
[1] Determination of SCL=Low
VIH
Figure 25.20 Timing of Stop Condition Issuance
Содержание Hitachi H8S/2191
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