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LP8553 Arkusz danych(PDF) 29 Page - Texas Instruments

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Numer części LP8553
Szczegółowy opis  LP8553 High-Efficiency LED Backlight Driver for Notebooks
PDF  42 Pages
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
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LP8553 Arkusz danych(HTML) 29 Page - Texas Instruments

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LP8553
www.ti.com
SNVS701B – SEPTEMBER 2011 – REVISED JANUARY 2014
Direct Control register
OUT
5:0
R/W
Direct control of the LED outputs
0 = Normal operation. LED output are controlled with PWM.
1 = LED output is forced to 100% PWM.
Temp MSB
Address 05h
Reset value 0000 0000b
Temp MSB register
7
6
5
4
3
2
1
0
TEMP[10:3]
Name
Bit
Access
Description
TEMP
7:0
R
Device internal temperature sensor reading first 8 MSB. MSB must be read before LSB,
because reading of MSB register latches the data.
Temp LSB
Address 06h
Reset value 0000 0000b
Temp LSB register
7
6
5
4
3
2
1
0
TEMP[2:0]
Name
Bit
Access
Description
TEMP
7:5
R
Device internal temperature sensor reading last 3 LSB. MSB must be read before LSB,
because reading of MSB register latches the data.
EEPROM Control
Address 72h
Reset value 0000 0000b
EEPROM Control register
7
6
5
4
3
2
1
0
EE_READY
EE_INIT
EE_PROG
EE_READ
Name
Bit
Access
Description
EE_READY
7
R
EEPROM ready
0 = EEPROM programming or read in progress
1 = EEPROM ready, not busy
EE_INIT
2
R/W
EEPROM initialization bit. This bit must be written 1 before EEPROM read or
programming.
EE_PROG
1
R/W
EEPROM programming.
0 = Normal operation
1 = Start the EEPROM programming sequence. EE_INIT must be written 1 before
EEPROM programming can be started. Programs data currently in the EEPROM
registers to non volatile memory (NVM). Programming sequence takes about 200
ms. Programming voltage is generated inside the chip.
EE_READ
0
R/W
EEPROM read
0 = Normal operation
1 = Reads the data from NVM to the EEPROM registers. Can be used to restore
default values if EEPROM registers are changed during testing.
Copyright © 2011–2014, Texas Instruments Incorporated
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