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參數(shù)資料
| 型號： | KS0741 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 128 SEG / 129 COM DRIVER & CONTROLLER FOR 4 GRAY SCALE STN LCD |
| 中文描述： | 128賽格/ 129 COM驅(qū)動程序 |
| 文件頁數(shù)： | 35/74頁 |
| 文件大?。?/td> | 985K |
| 代理商： | KS0741 |
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KS0741 PRELIMINARY SPEC. VER. 1.2 128 SEG / 129 COM DRIVER & CONTROLLER FOR STN LCD
31
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 19, it is necessary to be applied internally or externally.
For the Eq. 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 Eq. 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 13.
Rb
V0 = (1 +
) x V
EV
[V] ------ (Eq. 1)
Ra
(63 -
α
)
V
EV
= (1 -
) x V
REF
[V] ------ (Eq. 2)
210
Table 13 . V
REF
Voltage at Ta = 25
°
C
REF
Temp. coefficient
-0.05% /
°
C
External input
V
REF
[ V ]
1
2.1
0
VEXT
V
EV
GND
Ra
Rb
VSS
VR
V0
VOUT
+
-
Figure 19. Internal Voltage Regulator Circuit
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PDF描述 |
|---|---|
| KS0759 | 81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD |
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| KS10-5 | Single output 5W ~ 15W AC-DC on-board type power supply |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| KS08 | 制造商:TME 功能描述:PROBE SURFACE HIGH TEMPERATURE 制造商:TME 功能描述:PROBE, SURFACE, HIGH TEMPERATURE |
| KS080ASSWB | 制造商:Multiple Source 功能描述:ANTISTATIC SWIVEL CASTOR |
| KS085-176TT | 制造商:Advanced Interconnections Corp 功能描述:Pga Socket, 85 Contacts, 11x11, 0.1 Row Spacing, Pc Tail Terminal |
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