LAPIS Semiconductor ML62Q1000 Series, User Manual, Page: 487 / 882

ML62Q1000 Series User's Manual
Chapter 12 I2C Bus Unit
FEUL62Q1000 12-31
12.3.4 Slave Mode Communication Operation Timing
Figures 12-7 to 12-9 show the operation timing and control method for each communication mode.
Figure 12-7 Operation Timing in Data Reception Mode When Slave Mode is Chosen
Figure 12-8 Operation Timing in Data Transmission Mode When Slave Mode is Chosen
Figure 12-9 Operation Timing at Data Transmission/Reception Mode Switching When Slave Mode is Chosen
S P
S
r
Start
condition
Stop
condition
Restart
condition
A A A
I2US0CON="20H" I2US0CON="20H" I2US0CON="20H"
Received data
‚(2)
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
I2US0CON="20H"
Received data
ƒ(3)
Received data
(1)
Slave address
Slave address
Register
setting
I2CU0_SDA pin
I2CU0INT
I2US0SAA bit
I2US0RD register
I2US0TR bit
I2US0TD=
"
xxH
"
I2US0CON="20H"
I2US0TD=
"
xxH
"
I2US0CON="20H"
I2US0TD=
"
xxH
"
I2US0CON="20H"
Transmit data
(2)
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
Transmit data
(3)
Transmit data
(1)
Slave address
Slave address Transmit data (1) Transmit data (2)
Transmit data (3)
Register
setting
I2CU0_SDA pin
I2CU0INT
I2US0SAA bit
I2US0RD register
I2US0TR bit
I2US0CON="20H"
I2US0CON="20H"
S
A
6
A
5
A
0
R
W
A
D
6
D
0
D
7
A P
I2US0CON="20H"
Received data
(1)
Slave address
Slave address
Received data (1)
Slave address Transmit data (1)
Register
setting
I2CU0_SDA pin
I2CU0INT
I2US0SAA bit
I2US0RD register
I2US0CON="20H"
I2US0TD="xxH"
I2US0CON="20H"
A
6
A
5
A
0
R
W
A
D
6
D
0
D
7
A
Transmit data
(1)
Slave address
S
r
I2US0TR bit