Technical information

36
MITSUBISHI MICROCOMPUTERS
3820 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 28 LCD drive waveform (1/3 bias)
Internal logic
LCDCK timing
1/4 duty
Voltage level
VL3
VSS
COM0
COM1
COM2
COM3
SEG0
OFF ON OFF ON
COM3
COM2 COM1 COM0
COM3
COM2 COM1 COM0
1/3 duty
OFFON ON OFF ON OFF
1/2 duty
COM
0
COM1
COM2
SEG0
COM0
COM1
SEG0
OFFON OFFON OFFON OFFON
VL3
VL2
VSS
VL1
VL3
VL2
VSS
VL1
VL3
VSS
VL3
VL2
VSS
VL1
VL3
VSS
COM0
COM2 COM1 COM0
COM2 COM1 COM0 COM2
COM1 COM0
COM1 COM0
COM1 COM0 COM1 COM0