Lapis ML610Q111, User Manual

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ML610Q111/ML610Q112 User’s Manual
Chapter 14 I
2
C bus Interface Slave
FEUL610Q111 14-12
14.3.2 Communication Operation Timing
Figures 14-2 to 14-4 show the operation timing and control method for each communication mode.
Figure 14-2 Operation Timing in Data Receive (Read)
Figure 14-3 Operation Timing in Data Transmit (Write)
Figure 14-4 Operation Timing at Data Transmit/Receive (Write/Read) Switching
I2C1CON=”20H”
S
A
6
A
5
A
0
R
W
A
D
6
D
0
D
7
A P
I2C1CON=”20H”
Receive data

Slave address
Slave address
Receive data

Slave address
Transmit data

Register
setting
SDA
I2CSINT
I21SAA
I2C1RD
I2C1CON=”20H”
I2C1TD=
”
xxH
”
I2C1CON=”20H”
A
6
A
5
A
0
R
W
A
D
6
D
0
D
7
A
Transmit data

Slave address
S
r
I2C1TD=
”
xxH
”
I2C1CON=”20H”
I2C1TD=
”
xxH
”
I2C1CON=”20H”
I2C1TD=
”
xxH
”
I2C1CON=”20H”
Transmit data

S
A
6
A
5
A
4
A
3
A
2
A
1
A
0
R
W
A
D
6
D
0
D
7
A
D
6
D
7
D
0
A
D
6
D
7
D
0
A P
I2C1CON=”20H”
Transmit data

Transmit data

Slave address
Slave address Transmit data

Transmit data

Transmit data

Register
setting
SDA
I2CSINT
I21SAA
I2C1RD
I21TR
S P
S
r
Reception Start
condition
Stop
condition
Repeated start
condition
Reception of
acknowledgment
Transmission of
acknowledgment
Transmission of
non-acknowledgment
A A A
I2C1CON=”20H” I2C1CON=”20H” I2C1CON=”20H”
Receive data

S
A
6
A
5
A
4
A
3
A
2
A
1
A
0
R
W
A
D
6
D
0
D
7
A
D
6
D
7
D
0
A
D
6
D
7
D
0
A P
I2C1CON=”20H”
Receive data

Receive data

Slave address
Slave address Receive data

Receive data

Receive data

Register
setting
SDA
I2CSINT
I21SAA
I2C1RD
I21TR
Transmission