Renesas RX100 Series User Manual page 784

RX13T Group
[RDRFS = 0, WAIT = 0]
9 1 2
SCL0
ACK
SDA0
RDRF
Read ICDRR register
[RDRFS = 0, WAIT = 1]
Automatic low-hold (WAIT)
9 1
SCL0
ACK
SDA0
RDRF
Read ICDRR register
[RDRFS = 1, WAIT = 0]
2 3 4
SCL0
SDA0 Data
RDRF
ACKBT
[RDRFS = 1, WAIT = 1]
2 3 4
SCL0
Data
SDA0
RDRF
ACKBT
Figure 24.32 Automatic Low-Hold Operation in Receive Mode (Using RDRFS and WAIT Bits)
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
3 4 5 6 7 8
ACK
Data
2 3 4 5 6 7
Data
Automatic low-hold (RDRFS)
5 6 7 8 9
ACK
Write 0 to ACKBT bit
Automatic low-hold
(RDRFS)
5 6 7 8 9
ACK
Write 0 to ACKBT bit
9 1 2 3 4 5 6
Data
Automatic low-hold (WAIT)
8 9 1 2 3 4
ACK
Data
Read ICDRR register
1 2 3 4 5 6 7
Data
Read ICDRR register Read ICDRR register Write 0 to ACKBT bit
Automatic low-hold (WAIT)
1 2 3 4 5
Data
Read ICDRR register
2
24. I C-bus Interface (RIICa)
Automatic low-hold
(to prevent failure to receive data)
7 8 9 1 2 3
ACK
Read ICDRR register Read ICDRR register
Automatic low-
5 6 7 8 9
ACK
Read ICDRR resgister
Automatic low-hold
Automatic low-
(to prevent failure to
hold (RDRFS)
receive data)
8 9
ACK
Automatic low-hold
(RDRFS)
6 7 8 9
ACK
Read ICDRR register Write 0 to ACKBT bit
Page 784 of 1041
4
Data
hold (WAIT)
1
1
1