Output Waveform (1/3 Duty) During Operation Of Lcd Controller/Driver; Table 14-8 Example Of Display Ram Data - Fujitsu MB90420/5 (A) Series Hardware Manual

14.6.2 Output Waveform (1/3 duty) during Operation of LCD Controller/Driver

Only the COM0,COM1and COM2 pins are used for LCD display when 1/3 duty is used; the COM3 pin are
not used.
„
Output waves on 1/3 bias and 1/3 duty
An LCD in which the potential difference between the common output pin and the segment output pin
becomes the maximum is set to ON.
Figure 14.15 shows the output waveform when the display RAM data is shown in Table 14-8 .
SEGn
SEGn + 1
—: Unused
LCD CONTROLLER/DRIVER

Table 14-8 Example of Display RAM Data

Segment
COM3
––
––
Display RAM Data
COM2 COM1
1 0
1 0
14-23
COM0
0
1