h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 377
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h8s-2111b
Manufacturer Part Number
h8s-2111b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2111B.pdf
(582 pages)
- Current page: 377 of 582
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10. Note on IRIC flag clear when the wait function is used
Note: This restriction on usage can be canceled by setting the FNC1 and FNC0 bits to 1 in
If the rise time of SCL exceeds the stipulated value or a slave device in which a wait can be
inserted by driving the SCL pin low is used when the wait function is used in I
master mode, the IRIC flag should be cleared after determining that the SCL is low, as
described below.
If the IRIC flag is cleared to 0 when WAIT = 1 while the SCL is extending the high level time,
the SDA level may change before the SCL goes low, which may generate a start or stop
condition erroneously.
ICXR.
SDA
IRIC
SCL
Figure 13.32 IRIC Flag Clearing Timing when WAIT = 1
SCL = low detected
VIH
[1] SCL = low determination
Secures a high period
[2] IRIC clear
Rev. 1.00, 05/04, page 343 of 544
2
C bust interface
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