Output Waveform During Lcd Controller Operation (1/3 Duty) - Fujitsu F2MC-8FX Hardware Manual

24.6.2

Output Waveform during LCD Controller Operation (1/3 Duty)

In 1/3 duty mode, COM0, COM1, and COM2 are used for display. COM3 is not used.
1/3 Bias, 1/3 Duty Output Waveform Example
Those liquid crystal elements are turned "ON" for display which has the maximum potential
difference between the common and segment outputs.
Figure 24.6-3 shows the output waveform when the contents of display RAM are those shown in
Table 24.6-2.
Table 24.6-2 Sample Contents of Display RAM
-: Unused
Segment
SEG n
SEG n+1
Contents of Display RAM
COM3 COM2
- 1
- 1
CHAPTER 24 LCD CONTROLLER
COM1
0
0
COM0
0
1
457