BM28723AMUV
Command Interface - continued
MSB
6
5
LSB
SDA
SCL
Start Condition
Stop Condition
SDA↓ SCL=High
SDA↑ SCL=High
Figure 34
7.3 Slave Address
•While ADDR Pin is Low
MSB
LSB
A6
1
A5
0
A4
A3
0
A2
0
A1
0
A0
0
R/W
1/0
0
•While ADDR Pin is High
MSB
LSB
A6
1
A5
0
A4
0
A3
0
A2
0
A1
0
A0
1
R/W
1/0
Figure 35
7.4 Writing of Data
•Basic format
S
Slave Address
A
A
Select Address
A
Data
A
A
P
: Master to Slave,
: Slave to Master
•Auto-increment format
Slave Address
S
Select Address
A
Data 1
Data 2
A
Data 3…N
A
P
: Master to Slave,
Figure 36
: Slave to Master
7.5 Reading of Data
First of all, the address (0x20 in the example) for reading is written in the register of the 0xD0 address at the time of reading.
In the following stream, data is read after the slave address. Do not return the acknowledge when ending the reception.
S
Slave Address
0x80
A
A
Req_Addr
0xD0
A
Select Address
0x20
A
P
(ex.)
S
Slave Address
0x81
Data 1
0x**
A
Data 2
0x**
A
A
Data N
0x**
Ā
P
(ex.)
: Master to Slave,
: Slave to Master, A: With Acknowledge, Ā: Without Acknowledge
Figure 37
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TSZ02201-0C1C0E900720-1-2
31.Aug.2018 Rev.001
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