Datasheet

Section 16 I
2
C Bus Interface [Option]
Rev. 4.00 Sep 27, 2006 page 521 of 1130
REJ09B0327-0400
MSTPCRL Bit 3—Module Stop (MSTP3): Specifies IIC channel 1 module stop mode.
MSTPCRL
Bit 3
MSTP3 Description
0 IIC channel 1 module stop mode is cleared
1 IIC channel 1 module stop mode is set (Initial value)
16.3 Operation
16.3.1 I
2
C Bus Data Format
The I
2
C bus interface has serial and I
2
C bus formats.
The I
2
C bus formats are addressing formats with an acknowledge bit. These are shown in figures
16.3 (a) and (b). The first frame following a start condition always consists of 8 bits.
IIC channel 0 only is capable of formatless operation, as shown in figure 16.4.
The serial format is a non-addressing format with no acknowledge bit. Although start and stop
conditions must be issued, this format can be used as a synchronous serial format. This is shown in
figure 16.5.
Figure 16.6 shows the I
2
C bus timing.
The symbols used in figures 16.3 to 16.6 are explained in table 16.4.