SSD1815BT ETC1 [List of Unclassifed Manufacturers], SSD1815BT Datasheet - Page 19

• Manufacturer Part Number: SSD1815BT
• Description: LCD Segment / Common Driver with Controller
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

COMMAND DESCRIPTIONS
Set Lower Column Address
address of the display data RAM. The column address will be in-
creased by each data access after it is pre-set by the MCU.
Set Higher Column Address
umn address of the display data RAM. The column address will
be increased by each data access after it is pre-set by the MCU.
Set Internal Regulator Resistors Ratio
sistor sets for different regulator gain when using internal regu-
lator resistor network (IRS pin pulled high). In other words, this
command is used to select which contrast curve from the eight
possible selections. Please refer to Functional Block Descrip-
tions section for detail calculation of the LCD driving voltage.
Set Power Control Register
ciated with the chip. There are three power relating sub-circuits
could be turned on/off by this command.
ative voltage supply (V
An external negative power supply is required if this option is
turned off.
age. V
different voltage levels (V
ulator output, V
this driver if this circuit is turned off.
Set Display Start Line
mine starting address of display RAM to be displayed by select-
ing a value from 0 to 63. 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 and so on. Display start line values of 0 to 63
are assigned to Page 0 to 7.
play start line set to 56 (38h).
Set Contrast Control Register
changing the LCD drive voltage, V
power circuits. V
trol register by a compound commands.
Set Segment Re-map
data column addresses and segment drivers. It allows flexibility
in mechanical layout of LCD glass design. Please refer to Figure
8 on page 15 for example.
SSD1815B
20
This command specifies the lower nibble of the 8-bit column
This command specifies the higher nibble of the 8-bit col-
This command is to enable any one of the eight internal re-
This command turns on/off the various power circuits asso-
Internal voltage booster is used to generated the large neg-
Internal regulator is used to generate the LCD driving volt-
Output op-amp buffer is the internal divider for dividing the
This command is to set Display Start Line register to deter-
Please refer to Figure 8 on page 15 as an example for dis-
This command adjusts the contrast of the LCD panel by
See Figure 10 for the contrast control flow.
This command changes the mapping between the display
L 6
, from the negative power supply, V
L6
L 6
. External voltage sources should be fed into
is set with 64 steps (6-bit) in the contrast con-
E E
L 2
) from the voltage input (V
, V
Rev 1.6
07/2002
L3
, V
L4
L 6
, V
, provided by the On-Chip
L5
) from the internal reg-
EE
.
SS1
- V
DD
).
Set LCD Bias
quired for driving the particular LCD panel in use.
used.
Set Entire Display On/Off
row, to be illuminated regardless of the contents of the GD-
DRAM. In addition, this command has higher priority than the
normal/reverse display.
ON/OFF” command to form a compound command for entering
power save mode. See “Set Power Save Mode” later in this sec-
tion.
Set Normal/Reverse Display
versed. In normal display, a RAM data of 1 indicates an illumina-
tion on the corresponding pixel, while in reversed display, a RAM
data of 0 will turn on the pixel.
be reversed, by this command.
Set Display On/Off
display off is issued with entire display is on, power save mode
will be entered. See “Set Power Save Mode” later in this section
for details.
Set Page Address
RAM pager register for read/write operations. Please refer to
Figure 8 on page 15 for detail mapping.
Set COM Output Scan Direction
lowing layout flexibility in LCD module assembly. See Figure 8
on page 15 for the relationship between turning on or off of this
feature.
command is issued. That is, if this command is sent during nor-
mal display, the graphic display will have vertical flipping effect.
Figure 10 Contrast Control Flow
This command is used to select a suitable bias ratio re-
The selectable values of this command are 1/9 or 1/7.
For other bias ratio settings, extended commands should be
This command forces the entire display, including the icon
This command is used together with “Set Display Display
This command turns the display to be either normal or re-
It should be noted that the icon line will not affect, that is not
This command is used to turn the display on or off. When
This command enters the page address from 0 to 8 to the
This command sets the scan direction of the COM output al-
In addition, the display will have immediate effect once this
No
Set Contrast Control Register
Contrast Level Data
Complete?
Changes
Yes
SOLOMON