M38203M4 Datasheet, PDF (52/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
3820 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Internal logic
LCDCK timing
1/4 duty
COM0
COM1
COM2
COM3
SEG0
Voltage level
VL3
VL2=VL1
VSS
VL3
VSS
OFF
ON
OFF
ON
COM3 COM2 COM1 COM0 COM3 COM2 COM1 COM0
1/3 duty
COM0
COM1
COM2
SEG0
ON
OFF
ON
OFF
ON
OFF
COM0 COM2 COM1 COM0 COM2 COM1 COM0 COM2
1/2 duty
COM0
COM1
SEG0
ON
OFF
ON
OFF
ON
OFF
ON
OFF
COM1 COM0 COM1 COM0 COM1 COM0 COM1 COM0
Fig. 34 LCD drive waveform (1/2 bias)
VL3
VL2=VL1
VSS
VL3
VSS
VL3
VL2=VL1
VSS
VL3
VSS
1-36
3820 GROUP USER’S MANUAL