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LM2756 Datasheet(PDF) 13 Page - Texas Instruments

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Part # LM2756
Description  Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in micro SMD
PDF  25 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM2756 Datasheet(HTML) 13 Page - Texas Instruments

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background image
0
bit7
62A
bit6
53A
bit5
SD62
bit4
SD53
bit3
ENC
bit2
ENB
bit1
ENA
bit0
MSB
LSB
ADR6
bit7
ADR5
bit6
ADR4
bit5
ADR3
bit4
ADR2
bit3
ADR1
bit2
ADR0
bit1
R/W
bit0
MSB
LSB
0
0
0
1
1
1
1
I
2
C Slave Address (chip address)
start
msb Chip Address lsb
w
ack
msb Register Add lsb
ack
msb
DATA
lsb
ack
stop
ack from slave
ack from slave
ack from slave
SCL
SDIO
start
Id = 36h
w
ack
addr = 10h
ack
ack
DGGUHVV K¶06 data
stop
LM2756
www.ti.com
SNVS504B – JULY 2007 – REVISED DECEMBER 2007
w = write (SDIO = "0")
r = read (SDIO = "1")
ack = acknowledge (SDIO pulled down by either master or slave)
id = chip address, 36h for LM2756
Figure 6. Write Cycle
I
2C COMPATIBLE CHIP ADDRESS
The chip address for LM2756 is 0110110, or 36h.
Figure 7. Chip Address
INTERNAL REGISTERS OF LM2756
Register
Internal Hex Address
Power On Value
General Purpose Register
10h
0000 0000
Group A Brightness Control Register
A0h
1110 0000
Group B Brightness Control Register
B0h
1111 1000
Group C Brightness Control Register
C0h
1111 1000
Ramp Step Time Register
20h
1111 0000
VF Monitor Delay Ragister
60h
1111 1100
Figure 8. General Purpose Register Description
Internal Hex Address: 10h
Copyright © 2007, Texas Instruments Incorporated
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Product Folder Links: LM2756



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