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參數(shù)資料
| 型號： | KS0717 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Driver & Controller for STN LCD(STN LCD驅動器和控制器) |
| 中文描述： | 驅動程序 |
| 文件頁數(shù)： | 24/57頁 |
| 文件大?。?/td> | 288K |
| 代理商： | KS0717 |
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KS0717
55COM/100SEG DRIVER & CONTROLLER FOR STN LCD
24
Preliminary
VOLTAGE REGULATOR CIRCUITS
The function of the internal voltage regulator circuits is to determine liquid crystal operating voltage, V0, by
adjusting resistors, Ra and Rb, within the range of |V0| < |VOUT|. Because VOUT is the operating voltage of
operational-amplifier circuits shown in Figure. 10. it is necessary to be applied internally or externally.
For the Equation 1, we determine V0 by Ra, Rb and V
EV
. The Ra and Rb are connected internally or externally by
INTRS pin. And V
EV
called the voltage of electronic volume is determined by Equation 2, where the parameter
α
is
the value selected by instruction,
“
Set Reference Voltage Register
”
, within the range 0 to 63. V
REF
voltage at
Ta = 25
°
C is shown in Table 11.
<Equation 1>
<Equation 2>
Table 11. V
REF
Voltage at Ta = 25
°
C
VREFS
0
TEMPS
0
1
Temp. Coefficient
0.05% /
°
C
0.2% /
°
C
External Input
V
REF
[V]
2.1
2.1
VEXT
1
Figure 10. Internal Voltage Regulator Circuit
V0
1
Ra
Rb
+
V
EV
×
[V]
=
V
EV
1
162
α
–
-63
)
–
V
REF
×
[V]
=
V
EV
GND
V
SS
Ra
VR
Rb
V0
VOUT
+
_
+
_
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| KS0718 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:81 COM / 104 SEG DRIVER & CONTROLLER FOR STN LCD |
| KS0724 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:65 COM / 132 SEG DRIVER & CONTROLLER FOR STN LCD |
| KS0741 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128 SEG / 129 COM DRIVER & CONTROLLER FOR 4 GRAY SCALE STN LCD |
| KS0759 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD |
| KS0794 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:160 COM / 160 SEG DRIVER FOR STN LCD |
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