ISL29012 Datasheet, PDF (4/15 Pages) Intersil Corporation – Light-to-Digital Output Sensor with High Sensitivity, Gain Selection, Interrupt Function and I2C Bus™

ISL29012
I²C DATA
Start
DEVICE ADDRESS
W A REGISTER ADDRESS
A
STOP
START
DEVICE ADDRESS
A
DATA BYTE0
A STOP
I²C SDA
In
A6 A5 A4 A3 A2 A1 A0 W A R7 R6 R5 R4 R3 R2 R1 R0 A
A6 A5 A4 A3 A2 A1 A0 W A
SDA DRIVEN BY IISSLL2299000132 NAK
I²C SDA
Out
SDA DRIVEN BY MASTER
A
SDA DRIVEN BY MASTER
A
SDA DRIVEN BY MASTER
A D7 D6 D5 D4 D3 D2 D1 D0 A
I²C CLK
123456789123456789
123456789123456789
FIGURE 1. I²C READ TIMING DIAGRAM SAMPLE
I²C DATA
I²C SDA In
Start
DEVICE ADDRESS W A REGISTER ADDRESS
A
FUNCTIONS
A STOP
A6 A5 A4 A3 A2 A1 A0 W A R7 R6 R5 R4 R3 R2 R1 R0 A B7 B6 B5 B4 B3 B2 B1 B0 A
I²C SDA Out
SDA DRIVEN BY MASTER
A
SDA DRIVEN BY MASTER
A
SDA DRIVEN BY MASTER
A
I²C CLK In
123456789123456789123456789
FIGURE 2. I²C WRITE TIMING DIAGRAM SAMPLE
I² C D A T A
I² C S D A In
I² C S D A O u t
S tart
D E V IC E A D D R E S S
WA
R E G IS TE R A D D R E S S
A S top
A 6 A 5 A 4 A 3 A 2 A 1 A 0 W A R7 R6 R5 R4 R3 R2 R1 R0 A
S D A D R IV EN B Y M A S T ER
A
S D A D R IV EN B Y M A S T ER
A
I² C C L K In
123456789123456789
FIGURE 3. I²C SYNC_I²C TIMING DIAGRAM SAMPLE
4
FN6476.1
December 10, 2008