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參數(shù)資料
| 型號： | EM65240 |
| 英文描述： | Graphic STN LCD Drivers |
| 中文描述： | 圖形STN液晶顯示器驅(qū)動 |
| 文件頁數(shù)： | 27/29頁 |
| 文件大?。?/td> | 451K |
| 代理商： | EM65240 |
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EM65240
240 COM/SEG Dot Matrix LCD Driver
* This specification are subject to be changed without notice.
4.8.2002
7
Common mode
Table3 pin description of common mode
Symbol
I/O Connected to Functions
VDD
I
Power supply Power supply for internal logic connects to
+2.5 to +5.5V
VSS
I
GND
Connect to Ground
V0R,V0L
V12R,V12L
V34R,V34L
V5R,V5L
I
Power supply Power supply for LCD driver level
˙Normally，the bias voltage used is set by
resistor divider
˙Ensure that the voltage are set such that
VSS≦V5<V34<V12<V0
˙To further reduce the difference between
the output waveforms of LCD driver output
pin Y1 and Y240 ，externally connect ViR and
ViL
(i=0，12，34，5)
EIO1， EIO2 I/O
Data input/output shift for bi-directional shift
register
˙When EIO1(EIO2) is input，it will be
pull-down
˙When EIO1(EIO2) is output，it will not be
pull-down
DIR
EIO1
EIO2
H
input
output
L
output
input
LP
I
Controller
Shift clock for bi-directional shift register
˙Data is shifted on the falling edge of the
clock
DIR
I
Controller
Directional selection of bi-directional shift
register
DIR
Data read direction
L
Y240 to Y1
H
Y1 to Y240
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