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SC657 Fiches technique(PDF) 18 Page - Semtech Corporation

No de pièce SC657
Description  Backlight Driver for 5 LEDs with SemPulseTM Interface
PDF  22 Pages
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Fabricant  SEMTECH [Semtech Corporation]
Site Internet  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC657 Fiches technique(HTML) 18 Page - Semtech Corporation

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8
Register and Bit Definitions (continued)
Sub Backlight Current Control Register (02h)
This register is used to set the currents for the backlight
current sinks assigned to the Sub Backlight Group. This
group can also be used to control green LEDs for limited
RGB control. These current sinks need to be enabled in the
Backlight Enable Control register to be active.
Bit D5
This bit is unused and is always a zero, so the maximum
pulse count for this register is 3.
SBL4 — SBL0 [D4:D0]
These bits are used to set the current for the sub backlight
current sinks. All enabled sub backlight current sinks will
sink the same current, as shown in Table 5.
Table 5 — Sub Backlight Current Settings
SBL4
SBL3
SBL2
SBL
SBL0
Backlight Current (mA)
0
0
0
0
0
0
0
0
0
0

See note 
0
0
0

0
See note 
0
0
0


See note 
0
0

0
0
0.5
0
0

0

.0
0
0


0
.5
0
0



2.0
0

0
0
0
2.5
0

0
0

3.0
0

0

0
3.5
0

0


4.0
0


0
0
4.5
0


0

5.0
0



0
6.0
0




7.0

0
0
0
0
8.0

0
0
0

9.0

0
0

0
0

0
0




0

0
0
2

0

0

3

0


0
4

0



5


0
0
0
6


0
0

7


0

0
8


0


9



0
0
20



0

2




0
23





25
() Reserved for future use
SC657



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