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DK709 - 9 channel with self-correction function capacitive touch sensors

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Part number DK709
Manufacturer DongKe Semicondutor
File Size 232.90 KB
Description 9 channel with self-correction function capacitive touch sensors
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DK709 9 July 2011 DK709 9 http://www.dkpower.cn DK709 Spec V1.0 1 DK709 9 DK709 。 。。DK709 。 ● 9 ● “” ● ● PCB ● I2C ● : 2.5v~6.5v ● ● ● ● ● ● ● http://www.dkpower.cn DK709 Spec V1.0 2 DK709 9 I2C I2C SDA SCL ,。 , DK709 ( slaver ) , MCU ( master )。 SCL , MCU ; SDA ,,( master )( slaver ) SDA , open-drain (,), “0” NMOS SDA ,“ 1” SDA 。 SCL 、 ACK , SCL 。 ( start ): SCL , SDA ,。 ( end ): SCL , SDA ,。 ( ACK ): DK709 ,,, 。 DK709 I2C ,。 : 1 ) MCU start ,MCU 8bit ,7bit A[6:0] R/WB()。 DK709 1 : (A[6:0]) 40H (A[6:0]+RWB) 81H 2 ) DK709 ,ACK 。MCU ACK ,。 3 ) DK709 3-bit 9-bit K[8:0] 4-bit , ,。K[8:0] CIN8..CIN0。 4 ) MCU NACK ,。 5 ) SDA : SCL ,SDA 。 6 ) SCL :SCL H L 1.25US,SCL 400K。 7 ) MCU , DK709 。 http://www.dkpower.
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