LC75847T Datasheet, PDF (13/27 Pages) Sanyo Semicon Device – 1/3, 1/4 Duty General-Purpose LCD Driver

LC75847T
3. DR: 1/2 bias drive or 1/3 bias drive switching control data
This control data bit selects either 1/2 bias drive or 1/3 bias drive.
DR
Bias drive scheme
0
1/3 bias drive
1
1/2 bias drive
4. DT: 1/3 duty drive or 1/4 duty drive switching control data
This control data bit selects either 1/3 duty drive or 1/4 duty drive.
DT
Duty drive scheme
0
1/4 duty drive
1
1/3 duty drive
Note: COM4: Common output
S106: Segment output
Output pin state (COM4/S106)
COM4
S106
5. FC: Common and segment output waveforms frame frequency setting control data
This control data bit sets the frame frequency for common and segment output waveforms.
FC
Frame frequency f0 [Hz]
0
—fo—sc—
384
1
—fo—sc—
192
6. SC: Segments 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.
7. BU: Normal mode/power-saving mode control data
This control data bit selects either normal mode or power-saving mode.
BU
Mode
0
Normal mode
1
Power saving mode (The OSC pin oscillator is stopped, and the common and segment output pins go to the V_SS level. However,
the S1/P1 to S8/P8 output pins that are set to be general-purpose output ports by the control data P0 to P3 can be used as
general-purpose output ports.)
No. 7389-13/27