SSD1820ATR1 ETC1 [List of Unclassifed Manufacturers], SSD1820ATR1 Datasheet - Page 22

• Manufacturer Part Number: SSD1820ATR1
• Description: LCD Segment / Common Driver with Controller CMOS
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

SSD1820A/21
22
Command Description
Set Display On/Off
LSB.
Set Display Start Line
mine starting address of display RAM to be displayed by select-
ing a value from 0 to 63/79. With value equals to 0, D0 of Page 0
is mapped to COM0. With value equals to 1, D1 of Page0 is
mapped to COM0. The display start line values of 0 to 63/79 are
assigned to Page 0 to 7/9.
Set Page Address
ble positions in GDDRAM. Refer to figure 5/6.
Set Higher Column Address
address of the display data RAM. The column address will be
incremented by each data access after it is pre-set by the MCU
and returning to 0 once overflow (>127).
Set Lower Column Address
address of the display data RAM. The column address will be
incremented by each data access after it is pre-set by the MCU
and returning to 0 once overflow (>127).
Set Segment Re-map
data column address and segment driver. It allows flexibility in
layout during LCD module assembly. Refer to figure 5/6.
Set Normal/Reverse Display
In normal display, a RAM data of 1 indicates an “ON” pixel while
in reverse display, a RAM data of 0 indicates an “ON” pixel. The
icon line is not affected by this command.
This command turns the display on/off, by the value of the
This command positions the page address to 0 to 8/10 possi-
This command specifies the higher nibble of the 7-bit column
This command specifies the lower nibble of the 7-bit column
This commands changes the mapping between the display
This command sets the display to be either normal/reverse.
This command is to set Display Start Line register to deter-
1 6 . 0
1 4 . 0
1 2 . 0
1 0 . 0
8.0
6.0
4.0
2.0
0.0
0
REV 1.4
01/03
7
1 5
2 3
C o n t r a s t C o n t r o l S e t t i n g
D e f a u l t T C
3 1
3 9
Set Entire Display On/Off
row, to be “ON” regardless of the contents of the display data
RAM. This command has priority over normal/reverse dis-
play.
must be sent in advance.
Set LCD Bias
1/10) required for driving the particular LCD panel in use. The
POR default for SSD1820A is set to 1/9 bias; and 1/10 bias
for SSD1821.
Software Reset
chip to be initialized:
0, D0)
Set COM Output Scan Direction
allowing layout flexibility in LCD module assembly.
Set Power Control Register
ciated with the chip.
Set Internal Regulator Resistors Ratio
This command is to enable any one of the eight internal resis-
tor (IRS) settings for different regulator gains when using
internal regulator resistor network (INTRS pin pulled high).
When external resistors are used, INTRS must be connected
to VSS. The Contrast Control Voltage Range curves is given
in the figure below:
This command forces the entire display, including the icon
To executed this command, Set Display On command
This command causes some of the internal status of the
1. Page address is set to 0
2. Column address is set to 0
3. Initial Display Line is set to 0 (point to display RAM page
4. Internal Resistor Ratio register is set to (0,0,0)
5. Software Contrast is set to 32
This command sets the scan direction of the COM output
This command turns on/off the various power circuits asso-
This command selects a suitable bias ratio (1/4 to 1/9 or
4 7
5 5
6 3
S e t t i n g
1 1 1
1 1 0
1 0 1
1 0 0
0 1 1
0 1 0
0 0 1
0 0 0
IRS
SOLOMON