SC668 datasheet(25/46 Pages) SEMTECH

Part #	SC668

Description	8 LED Light Management Unit Automatic Dropout Prevention , Ambient Light Sense Input, PWM Dimming, and 4 LDOs

PDF	46 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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25 / 46 page

SC668

Serial Interface (continued)

I2C Direct Format Write

Slave Address

Data

W A

A P

S – Start Condition

W – Write = ‘0’

A – Acknowledge (sent by slave)

P – Stop condition

Slave Address – 7-bit

Data – 8-bit

I2C Stop Separated Format Read

Slave Address

Slave Address B

Data

NACK

W A

S/Sr

R A

Slave Address

Master Addresses

other Slaves

S – Start Condition

W – Write = ‘0’

R – Read = ‘1’

A – Acknowledge (sent by slave)

NAK – Non-Acknowledge (sent by master)

Sr – Repeated Start condition

P – Stop condition

Slave Address – 7-bit

Data – 8-bit

I2C Combined Format Read

Slave Address

Data

NACK

W A

A Sr

R A

S – Start Condition

W – Write = ‘0’

R – Read = ‘1’

A – Acknowledge (sent by slave)

NAK – Non-Acknowledge (sent by master)

Sr – Repeated Start condition

P – Stop condition

Slave Address – 7-bit

Data – 8-bit

SC668 Datasheet(PDF) 25 Page - Semtech Corporation

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