s3c72m9 Samsung Semiconductor, Inc., s3c72m9 Datasheet - Page 313

• Manufacturer Part Number: s3c72m9
• Description: The S3c72m5/s3c72m7/s3c72m9 Single-chip Cmos Microcontroller Has Been Designed For High Performance Using Samsung S
• Manufacturer: Samsung Semiconductor, Inc.

S3C72M5/C72M7/C72M9/P72M9 (Preliminary Spec)
NOTE:
LCD CONTROL REGISTER (LCON)
The LCD control register (LCON) is used to turn the LCD display on and off, to select duty, to output LCD SEG
expand signal for LCD display expansion, and to control the flow of current to dividing resistors in the LCD circuit.
Following a RESET, all LCON values are cleared to "0". This turns the LCD display off and stops the flow of current
to the dividing resistors.
NOTE:
LMOD.1–0
LCON Bit
LCON.3
LCON.2
LCON.1
LCON.0
0, 0
0, 1
1, 1
When 1/8 duty is selected, COM8–COM15 (SEG87–SEG80) is used for segment pins.
The function of LCON.0 is applied in case of using the internal V
Duty
1/16
1/8
All of the LCD dots off
All of the LCD dots on
Common and segment signal output
corresponds to display data (normal
display mode)
COM0–COM15
Setting
LCON
0
1
0
1
0
1
0
1
Table 12-1. Common and Segment Pins per Duty Cycle
Table 12-2. LCD Control Register (LCON) Organization
Disable LCD SEG expand signal output
Enable LCD SEG expand signal output
M signal for KS0106 (SAMSUNG)
M signal for KS0108 (SAMSUNG)
1/8 duty (COM0–COM7, SEG87–SEG80 select)
1/16 duty (COM0–COM15 select)
Turn off the point between V
Turn on the point between V
LCON.3
Common Pins
COM0–COM15
COM0–COM7
Table 12-3. LMOD.1–0 Bits Settings
SEG0–SEG79
LCON.2
Normal I/O port function
SEG79/P6.0–SEG48/P13.3
LCON.1
DD
DD
48 pins–80 pins
56 pins–88 pins
Segment Pins
and V
and V
Description
DD
LC1
LC1
for LCD power.
LCON.0
F8EH
LCD CONTROLLER/DRIVER
Power Supply to the
768 dots–1280 dots
448 dots–704 dots
Dividing Resistor
Dot Number
On
12-5