h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 575

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

SDA
SCL
TRS bit
RDRF bit
ICDRS data
full
SDA
SCL
TRS bit
TDRE bit
Figure 16.26 Notes on ICDR Reading with TRS = 1 Setting in Master Mode
Figure 16.27 Notes on ICDR Writing with TRS = 0 Setting in Slave Mode
Detection of 9th clock rise
(TRS = 1)
8
8
Stop condition
Stop condition
A
9
A
9
TRS = 0 setting
ICDR read
Start condition
Start condition
1
1
ICDR write
2
2
Section 16 I
3
3
Address
Address
4
4
5
5
Rev. 4.00 Jun 06, 2006 page 521 of 1004
2
(1) TDRE = 0
C Bus Interface [H8S/2138 Group Option]
(2) TRS = 1
6
(1) ICDRS data full
6
Along with ICDRS: ICDRR transfer
7
7
Automatic TRS = 1 setting by
receiving R/W = 1
Cancel condition of SCL =
Low fixation
(2) RDRF = 0
Along with ICDRS: ICDRR transfer
8
8
A
9
A
9
Cancel condition of SCL =
Low fixation is set.
TRS = 0 setting
1
REJ09B0301-0400
2
Data
Data
1
3
(3) TRS = 0
2
4
3