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LP55231 Datasheet(PDF) 19 Page - Texas Instruments

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Part # LP55231
Description  LP55231 Programmable 9-Output LED Driver
PDF  53 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LP55231 Datasheet(HTML) 19 Page - Texas Instruments

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 19 / 53 page
background image
ack from slave
start
MSB Chip Addr LSB
SCL
ack from slave
w
MSB Register Addr LSB
rs
r
MSB
Data
LSB
stop
ack from slave
nack from master
repeated start
data from slave
SDA
start
id =32h
w ack
address = 3Fh
ack
rs
r ack
address 3Fh data
nack
stop
MSB Chip Address LSB
id = 32h
start
MSB Chip Addr LSB
w
ack
MSB Register Addr LSB
ack
MSB
Data LSB
ack
stop
ack from slave
ack from slave
ack from slave
SCL
SDA
start
id = 32h
w
ack
addr = 40h
ack
ack
address 40h data
stop
ADR6
bit7
ADR5
bit6
ADR4
bit5
ADR3
bit4
ADR2
bit3
ADR1
bit2
ADR0
bit1
R/W
bit0
MSB
LSB
0
0
0
1
1
0
1
I
2
C Slave Address (chip address)
LP55231
www.ti.com
SNOSCR5 – MARCH 2013
Table 1. LP55231 Chip Address Configuration (continued)
ASEL1
ASEL0
ADDRESS
8-BIT HEX ADDRESS
GND
VEN
33
66/67
VEN
GND
34
68/69
VEN
VEN
35
6A/6B
Figure 21. LP55231 Chip Address
Figure 22. Write cycle (w = write; SDA = "0"), id = chip address = 32h for LP55231.
This data pattern writes temperature information to the TEMPERATURE WRITE register (40h).
Figure 23. Read cycle (r = read; SDA = "1"), id = chip address = 32h for LP55231. This data pattern reads
temperature information from the TEMPERATURE READ register (3Fh). When a READ function is to be
accomplished, a WRITE function must precede the READ function, as show above.
Copyright © 2013, Texas Instruments Incorporated
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Product Folder Links: LP55231



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