h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 567

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Note on I
If the rise time of the 9th SCL clock exceeds the specification because the bus load capacitance
is large, or if there is a slave devices of the type that drives SCL low to effect a wait, after
rising of the 9th SCL clock, issue the stop condition after reading SCL and determining it to be
low, as shown below.
SDA
IRIC
SCL
2
C Bus Interface Stop Condition Instruction Issuance
VIH
9th clock
Figure 16.20 Timing of Stop Condition Issuance
As waveform rise is late,
SCL is detected as low
High period secured
Section 16 I
[1] Determination of SCL=Low
Rev. 4.00 Jun 06, 2006 page 513 of 1004
2
C Bus Interface [H8S/2138 Group Option]
[2] Stop condition instruction issuance
Stop condition generation
REJ09B0301-0400