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SC657 数据表(PDF) 19 Page - Semtech Corporation

部件名 SC657
功能描述  Backlight Driver for 5 LEDs with SemPulseTM Interface
PDF  22 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC657 数据表(HTML) 19 Page - Semtech Corporation

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9
Register and Bit Definitions (continued)
Third Backlight Current Control Register (03h)
This register is used to set the currents for the backlight
current sinks assigned to the Third Backlight Group. This
group can also be used to control blue 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.
TBL4 — TBL0 [D4:D0]
These bits are used to set the current for the third back-
light current sinks. All enabled third backlight current
sinks will sink the same current, as shown in Table 6.
Table 6 — Third Backlight Current Control Bits
TBL4
TBL3
TBL2
TBL
TBL0
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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