LCD CONTROLLER/DRIVER S3C8245/P8245/C8249/P8249
14-4
LCD CONTROL REGISTER (LCON), D0H
Table 14-1. LCD Control Register (LCON) Organization
LCON Bit Setting Description
LCON.7 0P5.4–P5.7 I/O is selected
1SEG28–SEG31 is selected, P5.4–P5.7 I/O is disabled
LCON.6 0P5.0–P5.3 I/O is selected
1SEG24–SEG27 is selected, P5.0–P5.3 I/O is disabled
LCON.5 0P4.4–P4.7 I/O is selected
1SEG20–SEG23 is selected, P4.4–P4.7 I/O is disabled
LCON.4 0P4.0–P4.3 I/O is selected
1SEG16–SEG19 is selected, P4.0–P4.3 I/O is disabled
LCON.3 0This bit is used for internal testing only; always logic zero.
LCON.2 0Enable LCD initial circuit (internal bias voltage).
1Disable LCD initial circuit for external LCD dividing resistors(external bias voltage).
LCON.1 0Stop voltage booster(clock stop and cut off current charge path)
1Run voltage booster(clock run and turn on current charge path)
LCON.0 0LCD output low; turn display off, COM and SEG output Low
Cut off voltage booster (Booster clock disable).
1COM and SEG output is in display mode; turn display on.
Table 14-2. Relationship of LCON.0 and LMOD.3 Bit Settings
LCON.0 LMOD.3 COM0–COM3 SEG0–SEG31
0xOutput low; LCD display off Output low; LCD display off
1 0 Output low; LCD display off Output low; LCD display off
1COM output corresponds to display mode SEG output corresponds to display mode
NOTE: "X" means don’t care.