Renesas H8S/2633 Series Hardware Manual page 882

SDA
1-7
SCL
S SLA
2
Table 18-4 I C Bus Data Format Symbols
Legend
S Start condition. The master device drives SDA from high to low while SCL is high
SLA Slave address, by which the master device selects a slave device
R/W Indicates the direction of data transfer: from the slave device to the master device
when R/W is 1, or from the master device to the slave device when R/W is 0
A Acknowledge. The receiving device (the slave in master transmit mode, or the master
in master receive mode) drives SDA low to acknowledge a transfer
DATA Transferred data. The bit length is set by bits BC2 to BC0 in ICMR. The MSB-first or
LSB-first format is selected by bit MLS in ICMR
P Stop condition. The master device drives SDA from low to high while SCL is high
828
8 9 1-7
R/W A DATA
Figure 18-5 I
8 9 1-7
A
2
C Bus Timing
8 9
DATA A/A P