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BD1606MVV датащи(PDF) 5 Page - Rohm

номер детали BD1606MVV
подробное описание детали  Backlight LED Driver for Small LCD Panels (Charge Pump Type)
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производитель  ROHM [Rohm]
домашняя страница  http://www.rohm.com
Logo ROHM - Rohm

BD1606MVV датащи(HTML) 5 Page - Rohm

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Technical Note
5/11
www.rohm.com
2011.04 - Rev.A
© 2011 ROHM Co., Ltd. All rights reserved.
BD1606MVV
SDA
EN
SCL
I2C interface buffer
Ven
Ven
SDA
SCL
t SU;DAT
t LOW
S
Sr
P
S
t BUF
t HD;STA
t SU;STA
t HIGH
t HD;STA
t f
t HD;DAT
t SU;STO
t r
Description of Operations
(1) LED driver
I
2C BUS interface
BD1606MVV can control the LED ON/OFF, brightness and charge pump switching frequency change by writing to the
register via the I
2C BUS interface. Control by the I2C BUS interface is effective when EN is at ‘H’ kevel. When EN is at ‘L’
level, this LSI is completely shut down and control and associated functions via the I
2C BUS interface are all stopped.
As shown in Fig.13 below, the I
2C BUS interface of BD1606MVV operates using the Ven voltage (buffering the EN pin
voltage) as supply voltage. For this reason, it is desirable that the ‘H’ voltage in the I
2C BUS interface is equal to the EN
pin voltage.
Fig.13 I
2C BUS Interface Buffer
Fig.14 I
2C BUS Interface Timing
BD1606MVV operates as a slave device for the I
2C BUS interface.
a) Slave address
A7
A6
A5
A4
A3
A2
A1
R/W
1
1
0
0
1
1
0
1/0
b) Data format
The data format is shown below.
Write format:
SW As
As Sr
R As
As
P
One-byte register data
7 bit
8 bit
7 bit
8 bit
Slave address
One-byte register
address
Slave address
Or
SW As
As
As
P
One-byte register
address
One-byte register data
7 bit
Slave address
8 bit
8 bit
Read format:
SW As
As
Sr
R As
Am
P
One-byte register
address
Slave address
One-byte register data
Slave address
8 bit
7 bit
7 bit
8 bit
Note)
S: Start condition
W: ‘0=Write
R: ‘1=Read
As: Acknowledge (slave -> master)
Am: No acknowledge
Sr: Repeated start condition
P: Stop condition


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