參數(shù)資料
型號(hào): KS0090i
廠(chǎng)商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: Driver & Controller for Dot Matrix LCD(點(diǎn)陣LCD的驅(qū)動(dòng)器和控制器)
中文描述: 驅(qū)動(dòng)程序
文件頁(yè)數(shù): 18/45頁(yè)
文件大?。?/td> 685K
代理商: KS0090I
KS0090i
26COM/64SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
18
Preliminary
LOW POWER CONSUMPTION MODE
KS0090i provides a
standby mode
and
sleep mode
to reduce power consumption during the standby period.
Standby Mode (Power save bit on, Oscillation bit on)
The standby mode can be switched on and off by the power save command.
In the standby mode, only the static icon is displayed.
1. Liquid crystal display output
COM1 to COM24, COMS1, COMS2: Vss level
SEG1 to SEG60, SEGS1, 2, 4, 5: Vss level
SEGSA, B, C, D, E, COMSA: V
DD
or V
SS
level (Can be turned on/off by static drivers)
Use the static icon RAM for controlling the static icon display done with SEGSA, B, C, D, E, COMSA.
2. Written data in DDRAM, CGRAM, ICONRAM and registers remain at its previous value.
3. Operation mode is retained the same as it was prior to execution of the standby mode.
The internal circuit for the dynamic display output is stopped.
4. The oscillation circuit for the static display must remain
on
.
Sleep Mode (Power save on, Oscillation off)
To enter the sleep mode, the power circuit and oscillation circuit should be turned off by the power save command
and power control command. This mode helps reduce power consumption by reducing current to reset level.
1. Liquid crystal display output
COM1 to COM24, COMS1, COMS2: V
SS
level
SEG1 to SEG60, SEGS1, 2, 4, 5: V
SS
level
SEGSA, B, C, D, E, COMSA: V
SS
level
2. Written data in DDRAM, CGRAM, ICONRAM and registers remain at its previous value.
3. Operation mode is retained as it was prior to execution of the sleep mode.
All internal circuits are stopped.
4. Power circuit and oscillation circuit
The built-in power supply circuit and oscillation circuit are turned off by the power save command and power
control command.
LCD DRIVER CIRCUIT
LCD driver circuit has 26 common and 64 segment signals for driving LCD. Data from ICONRAM/CGRAM/
CGROM are transferred to 64-bit segment register serially, and then they are stored to 64-bit latch. For 2-line
display mode, COM1 to COM16, COMS1, and COMS2 have 1/18 duty, and in 3-line mode, COM1 to COM 24,
COMS1, and COMS2 have 1/26 duty ratio.
SEG bidirectional function is selected by the BID input pin, and COM shift direction is selected by the function set
instruction “S” bit.
Table 6. SEG Data Shift Direction
BID pin
SEG Data Shift Direction
Low
SEGS1
SEGS2
SEG1
......
SEG60
SEGS4
SEGS5
High
SEGS5
SEGS4
SEG60
......
SEG1
SEGS2
SEGS1
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