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BD1606MVV датащи(PDF) 5 Page - Rohm |
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BD1606MVV датащи(HTML) 5 Page - Rohm |
5 / 12 page 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 |
Аналогичный номер детали - BD1606MVV |
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Аналогичное описание - BD1606MVV |
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