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BD6081GU,BD6081GVW
Technical Note
● RGB LED operating
1. Operating mode
RGB LED can set up the following operating mode by the setup of the register.
＜ Setup register ＞
I1**LED : (register) Initial electric current value [mA]
IDLT**LED : (register) The electric current Δ value of around 1Step [mA]
RGB*SLNUM : (register) slope step number (1,2,4,8,16,32,64 Step)
RGB*SL1STEP : (register) The first half slope 1Step time [ms]
RGB*SL2STEP : (register) The latter half slope 1Step time [ms]
RGB*WT1TM : (register) The first half lighting time [ms]
RGB*WT2TM : (register) The latter half lighting time [ms]
As for the following setup, calculate it from the above setup.
I2**LED : At the time of middle lighting current value [mA] = I1**LED + IDLT**LED x RGB*SLNUM
(In case of the value that a calculation exceeds maximum value, the current value is at the limit with maximum.)
RGB*SL1TM : The first half slope time [ms] = RGB*SL1STEP x RGB*SLNUM
RGB*SL2TM : The latter half slope time [ms] = RGB*SL2STEP x RGB*SLNUM
Each setup is necessary for DC current (at Normal mode or Blink mode).
(* : 1/ 2 channels is shown. ** : R1/G1/B1/R2 /G2/B2 is shown.)
Note) The current value in the table, it is value when 120k ? is connected to ISET pin.
Normal mode 1
31.5mA
I1**LED
0mA
RGB*STA=1
RGB*STA=0
Time
Normal mode 2
31.5mA
I2**LED is a calculation.
I2**LED
0mA
RGB*STA=1
RGB*STA=0
Time
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2011.04 - Rev.A
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