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參數(shù)資料
| 型號： | S6B0755 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 128 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD |
| 中文描述： | 128賽格/ 65 COM驅(qū)動(dòng)程序 |
| 文件頁數(shù)： | 30/68頁 |
| 文件大?。?/td> | 585K |
| 代理商： | S6B0755 |
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S6B0755 PRELIMINARY SPEC. VER. 1.0 128 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD
27
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 20, 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 10.
Rb
V0 = (1 +
) x V
EV
[V] ------ (Eq. 1)
Ra
(63 -
α
)
V
EV
= (1 -
) x V
REF
[V] ------ (Eq. 2)
210
Table 10. . 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 20. Internal Voltage Regulator Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
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| S6B0756 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:65COM / 96 SEG DRIVER & CONTROLLER FOR STN LCD |
| S6B0759 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD |
| S6B0794 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:160 SEG / COM DRIVER FOR STN LCD |
| S6B0794X01-B0CY | 制造商:Samsung Semiconductor 功能描述: |
| S6B0796 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:240 SEG / COM DRIVER FOR STN LCD |
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