LC75838W Datasheet, PDF (21/36 Pages) ON Semiconductor – Duty General-Purpose LCD Driver

LC75838W
3. SC: Segment on/off control data
This control data bit controls the on/off state of the segments.
SC
Display state
0
On
1
Off
However, note that when the segments are turned off by setting SC to 1, the segments are turned off by outputting
segment off waveforms from the segment output pins.
4. BU: Normal mode/power saving mode control data
This control data bit controls the normal mode and power saving mode.
BU
Mode
0
Normal mode
Power-saving mode.
1
The common and segment pins go to the VLCD4 level and the oscillator on the OSC pin is stopped. Note that the
states of the general-purpose output ports P1 to P3 are set by PC1 to PC3 in the control data during power saving
mode as well as normal mode.
5. DT1, DT2: Display technique setting data
This control data bits set the display technique.
DT1
DT2
Display technique
0
0
1/8 duty 1/4 bias drive
1
0
1/9 duty 1/4 bias drive
0
1
1/10 duty 1/4 bias drive
Notes: Sn (n = 39, 40): Segment outputs
COMn (n = 9 or 10): Common outputs
Output pins
S40/COM9
S39/COM10
S40
S39
COM9
S39
COM9
COM10
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