MAX8831 MAXIM [Maxim Integrated Products], MAX8831 Datasheet - Page 16

• Manufacturer Part Number: MAX8831
• Description: High-Efficiency, White LED Step-Up Converter with I2C Interface in 2mm x 2mm WLP
• Manufacturer: MAXIM [Maxim Integrated Products]

The MAX8831 has a 7-bit-long slave address (Figure
9). The eighth bit following the 7-bit slave address is
the R/W bit. It is low for a write command, high for a
read command. The slave addresses available for the
MAX8831 are 1001101X (with a write/read address of
0x9A/0x9B). Contact the factory for other I
options.
High-Efficiency, White LED Step-Up Converter
with I
Figure 7. I
Figure 9. MAX8831 Default Slave Address
Figure 10. I
16
SDA
SCL
SDA
SCL
______________________________________________________________________________________
S
S
AS
P
2
C Bit Transfer
2
C Single-Byte Write
2
DATA LINE STABLE,
DATA IS VALID
C Interface in 2mm x 2mm WLP
1
MSB
START BIT
ACKNOWLEDGE SLAVE
STOP BIT
7-BIT SLAVE
ADDRESS
MAX8831 Slave Address
CHANGE OF DATA
0
IS ALLOWED
0
0
AS
2
C address
1
COMMAND
BYTE
1
A write to the MAX8831 comprises the transmission of
the MAX8831’s slave address with the R/W bit set to
zero (0x9A), followed by at least 1 byte of information.
The first byte of information is the command byte
(Figure 10), which determines which register of the
MAX8831 is to be written by the next byte, if received. If
a STOP condition is detected after the command byte
is received, the MAX8831 takes no further action
beyond storing the command byte. Any bytes received
after the command byte are data bytes. The first data
Figure 8. I
TRANSMITTER
RECEIVER
SDA BY
SDA BY
SCL
0
AS
2
C Acknowledge
CONDITION
START
S
LSB
1
Message Format for Writing
D7
DATA BYTE
1
R / W
D6
2
NOT ACKNOWLEDGE
ACKNOWLEDGE
AS
ACK
D0
CLOCK PULSE FOR
ACKNOWLEDGMENT
8
9
P