NJU6655 Datasheet, PDF (22/47 Pages) List of Unclassifed Manufacturers – 64-common X 160-segment + 1-icon common Bitmap LCD Driver

NJU6655
(g) Display Data Read
This instruction reads out the display data stored in the selected column address on the DDRAM.
The column address automatically increments (+1) whenever the display data is read out by this instruction, so that this
instruction can be continuously issued without “column address set” instruction.
After the ”column address set” instruction, a dummy read will be required, please refer to the (4-4).
In case of using serial interface mode, this instruction can’t be used.
A0 RDb WRb D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
1
0
1
Read Data
(h) ADC Select
This instruction selects segment driver direction.
The correspondence between the column address and segment driver direction is shown in Fig.1.
This function reduces the restrictions on the IC position of an LCD module.
A0 RDb WRb D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
0
1
0
1
0
1
0
0
0
0
D
D 0: Clockwise Output (Normal)
Segment Driver S₀ to S₁₅₉
1: Counterclockwise Output (Inverse) Segment Driver S₁₅₉ to S₀
(i) Inverse Display On/Off
This instruction inverses the status of turn-on or turn-off of entire LCD pixels. It doesn’t change the contents of the
DDRAM.
A0 RDb WRb D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
0
1
0
1
0
1
0
0
1
1
D
D 0: Normal RAM data "1" correspond to "On"
1: Inverse RAM data "0" correspond to "On"
(j) Whole Display On/Off
This instruction turns on entire LCD pixels regardless the contents of the DDRAM. It doesn’t change the contents of
DDRAM.
This instruction should be performed prior to the "Inverse display On/Off" instruction.
A0 RDb WRb D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
0
1
0
1
0
1
0
0
1
0
D
D 0: Normal Display
1: Whole Display Turns On
(k) Bias Select
This instruction selects LCD bias value.
(Whole Display Off)
(Whole Display On)
A0 RDb WRb D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
0
1
0
1
0
0
1
0
0
A₁
A₀
A₁
A₀
LCD Bias
0
0
1/9
0
1
1/7
1
0
1/5
1
1
Prohibited*
* : Because it may malfunction-operate, do not set (D₁,D₀) = (1,1).
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Ver.2004-11-08