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LP3950SL/NOPB Datasheet(PDF) 12 Page - Texas Instruments

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No. de pieza LP3950SL/NOPB
Descripción Electrónicos  Color LED Driver with Audio Synchronizer
PDF  38 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

LP3950SL/NOPB Datasheet(HTML) 12 Page - Texas Instruments

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SDA
SCL
ack from slave
start
msb Chip Address lsb
SCL
ack from slave
w
msb Register Add lsb
rs
r
msb
DATA
lsb
stop
ack from slave
ack from master
repeated start
data from slave
SDA
start
Id = 36h
w ack
addr = K¶00
ack
rs
r ack
$GGUHVV K¶00 data
ack stop
msb Chip Address lsb
Id = 36h
LP3950
SNVS331C – NOVEMBER 2004 – REVISED APRIL 2013
www.ti.com
When a READ function is to be accomplished, a WRITE function must precede the READ function, as shown in
Figure 10 .
Figure 10. I2C Read Cycle
Figure 11. I2C Timing Diagram
Table 2. I2C Timing Parameters(1)
Symbol
Parameter
Limit
Units
Min
Max
1
Hold Time (repeated) START Condition
0.6
µs
2
Clock Low Time (1.65V
≤ VDDIO < 1.80V)
3.2
µs
2
Clock Low Time (1.80V
≤ VDDIO ≤ VDD1,2V)
1.3
µs
3
Clock High Time (1.65V
≤ VDDIO < 1.80V)
1200
ns
3
Clock High Time (1.80V
≤ VDDIO ≤ VDD1,2V)
600
ns
4
Setup Time for a Repeated START Condition
600
ns
5
Data Hold Time (data output, delay generated by LP3950)
300
900
ns
5
Data Hold Time (data input)
0
900
ns
6
Data Setup Time
100
ns
7
Rise Time of SDA and SCL
20+0.1Cb
300
ns
8
Fall Time of SDA and SCL
15+0.1Cb
300
ns
9
Set-up Time for STOP condition
600
ns
10
Bus Free Time between a STOP and a START Condition
1.3
µs
Cb
Capacitive Load Parameter for Each Bus Line.
10
200
ns
Load of One Picofarad Corresponds to One Nanosecond.
(1)
Data guaranteed by design
12
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Copyright © 2004–2013, Texas Instruments Incorporated
Product Folder Links: LP3950



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