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BD6081GU,BD6081GVW
External pin control
Technical Note
31.5mA
RGB*WT1TM
RGB*WT2TM
0mA
RGB*STA=1
I1**LED
I2**LED
RGB*STA=0
Time
RGB*MEL
(register)
RGB*CNT
(External pin)
When RGB*MEL =0,
lighting
RGB*MEL=1 and RGB*CNT=H,
Lighting.
When RGB*MEL=0,
lighting
2. Slope control
The slope control that this LSI is equipped processes step time inside as follows.
It is made to have electric current by the log curve that is a simple target as to the slope.
RGB*STA
IDLT**LED
LED current
I1**LED
T1
T2
T3
T4 T5
T7
T6
T8
(A)
(B)
(C)
(A)Section : It transits at the step time of two times when it was set up with RGB*SL1STEP
(B)Section : It transits at the step time when it was set up with RGB*SL1STEP.
(C)Section : It transits at the step time of a half times when it was set up with RGB*SL1STEP.
The time of the total (RGB*SL1TM) is calculated with RGB*SL1STEP x RGB*SLNUM.
A similar movement is done on the descent (RGB*SL2TM) side as well.
The acceptance of the setup of a register concerned with LED working during the slope movement stops.
But, a RGB*STA signal interrupts even during the slope movement, and it is possible that LED is turned off.
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? 2011 ROHM Co., Ltd. All rights reserved.
27/35
2011.04 - Rev.A
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