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參數(shù)資料
| 型號： | T6A04A |
| 廠商： | Toshiba Corporation |
| 英文描述： | Column and Row Driver LSI for a Dot Matrix Graphic LCD |
| 中文描述： | 列和行驅(qū)動器LSI的點陣圖形液晶顯示器 |
| 文件頁數(shù)： | 18/25頁 |
| 文件大?。?/td> | 307K |
| 代理商： | T6A04A |
T6A04A
2002-03-06
18
Oscillation frequency
The frequency select pins (FS1 and FS2), are used to set the relation between the oscillation frequency (f
OSC
)
and frame frequency (f
M
), as shown in the table below.
Rf (k )
fOSC (kHz)
f/ (kHz)
fFRM (Hz)
fM (Hz)
FS1
FS2
1000
26.88
13.44
70
35
0
0
480
53.76
26.88
70
35
1
0
105
215.00
107.50
70
35
0
1
50
430.10
215.00
70
35
1
1
Note 9: The resistance values are typical values.
The oscillation frequency depends on how the device is mounted. It is necessary to adjust the oscillation
frequency to a target value.
Expansion function
The T6A04A’s expansion function, allows two, T6A04As to drive an LCD panel of up to 240 by 64 dots.
The table below shows the functions which can be selected with the M/S and EXP pins.
M/S
H
L
H
●
Two-chip mode (enable expansion mode)
●
Master chip
COM1 to COM32 are available.
●
Two-chip mode (enable expansion mode)
●
Slave chip
●
COM33 to COM64 are available.
●
Timing signals and power voltage are supplied from
master chip.
EXP
L
●
Single-chip mode (disable expansion mode)
●
COM1 to COM32 are available.
●
Do not select.
Figures 13-1 and -2 illustrate application examples of disable expansion mode and enable expansion mode.
Enable Expansion Mode (two-chip mode)
As shown in Figure 13-2, and Figure 14 the master chip supplies the LCD drive signals and power voltage to
the slave chip (the oscillator, the timing circuits, op-amp and contrast control circuit are disabled).
COM1 to COM32 of the master chip and COM33 to COM64 of the slave chip are available (COM33 to COM64
of the master chip and COM1 to COM32 of the slave chip are disabled).
The T9841B is available as an expansion driver for the T6A04A (a T6A04A and T9841B can drive a 200
64-dot LCD panel).
(1)
Disable expansion mode
32-bit SR
COM32 Out
COM32 Out
32-bit SR
SEG 120 Out
RAM 120 64 Cell
120 dots
32 dots
COM1 to 32
SEG1 to 120
COM33 to 64
32
120
32
32 dots
Figure 13-1
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