p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 432

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 16 I
16.4
The I
16.4.1
The I
The first frame following a start condition always consists of 9 bits.
The serial format is a non-addressing format with no acknowledge bit. This is shown in figure
16.4.
Figure 16.5 shows the I
The symbols used in figures 16.3 to 16.5 are explained in table 16.6.
Rev. 1.00 Sep. 21, 2006 Page 394 of 658
REJ09B0310-0100
(a) FS = 0 or FSX = 0
(b) Start condition retransmission FS = 0 or FSX = 0
S
S
1
1
2
2
C bus interface has an I
C bus format is an addressing format with an acknowledge bit. This is shown in figure 16.3.
SLA
SLA
Operation
I
7
7
2
2
C Bus Data Format
C Bus Interface (IIC)
1
1
FS=1 and FSX=1
R/W
R/W
1
1
S
1
Figure 16.3 I
Figure 16.4 I
2
A
A
1
C bus timing.
1
DATA
DATA
8
2
1
DATA
C bus format and a serial format.
n1
n
m1
2
C Bus Data Format (I
2
C Bus Data Format (Serial Format)
A
1
DATA
A/A
1
n
m
S
1
m
SLA
7
A/A
1
1
R/W
P
1
Upper row: Transfer bit count (n1, n2 = 1 to 8)
Lower row: Transfer frame count (m1, m2 = from 1)
2
1
C Bus Format)
P
1
Transfer bit count
(n = 1 to 8)
Transfer frame count
(m = from 1)
A
1
Transfer bit count
(n = 1 to 8)
Transfer frame count
(m = from 1)
DATA
n2
m2
A/A
1
P
1