BU9817FV Просмотр технического описания (PDF) - ROHM Semiconductor

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BU9817FV

4-channel temperature sensor IC for PCs with I2C BUS interface

ROHM Semiconductor 

Multimedia ICs

!Circuit operation

Register structure

BU9817FV

1ch Configuration Register

1ch Vdl Register

1ch Vul Register

1ch ADV Register

SDA

SCL

I2C BUS

Interface

Pointer

Register

(Register select)

2ch Configuration Register

2ch Vdl Register

2ch Vul Register

2ch ADV Register

3ch Configuration Register

3ch Vdl Register

3ch Vul Register

3ch ADV Register

4ch Configuration Register

4ch Vdl Register

4ch Vul Register

4ch ADV Register

I2C Bus data structure

(1) Write Mode

S

Address

— W A Pointer reg. Byte

A

Write Data Byte

AP

(2) Read Mode

1) Pointer register set

S

Address

—W A Pointer reg. Byte

A

Sr

Address

R A Read Data Byte

—A P

2) Preset pointer register

S

Address

RA

Read Data Byte

—A P

S: Start condition

P: Stop condition

Sr: Restart condition

A: acknowledge

—A: acknowledge bar

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