參數(shù)資料
型號(hào)： SSD1818ATR1
廠商： Electronic Theatre Controls, Inc.
英文描述： LCD Segment / Common Driver with Controller
中文描述： LCD段/驅(qū)動(dòng)器與控制器通用
文件頁(yè)數(shù)： 29/47頁(yè)
文件大?。?/td> 642K
代理商： SSD1818ATR1
SSD1818A
Rev 1.2
P 29/47 Mar 2004
Solomon Systech
This command changes the mapping between the display data column addresses and segment drivers. It
allows flexibility in mechanical layout of LCD glass design. Please refer to Table 4 on Page 20 for
example.
Set LCD Bias
This command is used to select a suitable bias ratio required for driving the particular LCD panel in use.
The selectable values of this command for 64 MUX are 1/9 or 1/7, for 54 MUX are 1/8.4 or 1/6, for 48
MUX are 1/8 or 1/6, for 32 MUX are 1/6 or 1/5. For other bias ratio settings, extended commands should
be used.
Set Entire Display On/Off
This command forces the entire display, including the icon row, to be illuminated regardless of the
contents of the GDDRAM. In addition, this command has higher priority than the normal/reverse display.
This command is used together with “Set Display ON/OFF” command to form a compound command for
entering power save mode. See “Set Power Save Mode” later in this section.
Set Normal/Reverse Display
This command turns the display to be either normal or reverse. In normal display, a RAM data of 1
indicates an illumination on the corresponding pixel, while in reverse display, a RAM data of 0 will turn on
the pixel.
It should be noted that the icon line will not affect, that is not reverse by this command.
Set Display On/Off
This command is used to turn the display on or off. When 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
This command enters the page address from 0 to 8 to the RAM page register for read/write operations.
Please refer to Table 4 on Page 20 for detail mapping.
Set COM Output Scan Direction
This command sets the scan direction of the COM output allowing layout flexibility in LCD module
assembly. See Table 4 on Page 20 for the relationship between turning on or off of this feature.
In addition, the display will have immediate effect once this command is issued. That is, if this command
is sent during normal display, the graphic display will have vertical flipping effect.
Set Read-Modify-Write Mode
This command puts the chip in read-modify-write mode in which:
1. column address is saved before entering the mode
2. column address is increased only after display data write but not after display data read.
This Read-Modify-Write mode is used to save the MCU’s loading when a very portion of display area is
being updated frequently.
As reading the data will not change the column address, it could be get back from the chip and do some
operation in the MCU. Then the updated data could be writing back to the GDDRAM with automatic
address increment.
After updating the area, “Set End of Read-Modify-Write Mode” is sent to restore the column address and
ready for next update sequence.
Software Reset
Issuing this command causes some of the chip’s internal status registers to be initialized:
Read-Modify-Write mode is off
Static indicator is turned OFF
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