VM149D Datasheet, PDF(7/12 Page) Silicon Touch Technology Inc.

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VM149D Datasheet, PDF (7/12 Pages) Silicon Touch Technology Inc. – Programmable sinking output current

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VM149D

Data Format

VM149D Write Mode

In the writing mode, data is written to the VM149D and shifted into a 16-bit input register.

After all 16 bits of data have been shifted in, a STOP signal is generated by master

controller. The data in the input register is transferred to the DAC at the same time.

SCL

SDA

0 0 0 1 1 0 0 W SPS 0 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 S3 S2 S1 S0

START by

MASTER

FRAME 1

Serial Bus Address Byte

ACK by

11-VM149

FRAME 2

Most Significant

Data Byte

ACK by

11-VM149

FRAME 3

Least Significant

Data Byte

ACK by STOP by

11-VM149 MASTER

VM149D Read Mode

In reading mode, data is read from IC to a master controller in the same bit order.

SCL

SDA

0 0 0 11 0 0R

SPS 0 D9 D8 D7 D6 D5 D4

D3 D2 D1 D0 S3 S2 S1 S0

START by

MASTER

FRAME 1

Serial Bus Address Byte

ACK by

11-VM149

FRAME 2

Most Significant

Data Byte

ACK by

MASTER

FRAME 3

Least Significant

Data Byte

NACK by STOP by

MASTER MASTER

120mA, 10Bit Current Sinking VCM Driver with I2C Interface

Versionï¼A.003

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