參數(shù)資料
型號(hào): S6B0715A01-B0CZ
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 33 COM / 100 SEG DRIVER & CONTROLLER FOR STN LCD
中文描述: 33的COM / 100賽格驅(qū)動(dòng)
文件頁(yè)數(shù): 28/61頁(yè)
文件大?。?/td> 882K
代理商: S6B0715A01-B0CZ
33 COM / 100 SEG DRIVER & CONTROLLER FOR STN LCD
S6B0715
24
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 14, 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 31. V
REF
voltage at Ta = 25
°
C is
shown in table 15-1.
Rb
V0 = ( 1 +
) x V
EV
[V] ------ (Eq. 1)
Ra
(31 -
α
)
V
EV
= ( 1 -
) x V
REF
[V] ------ (Eq. 2)
150
Table 15-1. V
REF
Voltage at Ta = 25
°
C
TEMPS
Temp. coefficient
-0.05% /
°
C
-0.2% /
°
C
V
REF
[V]
L
1.9
H
2.1
Table 15-2. Reference Voltage Parameter (
a
)
SV4
SV3
SV2
SV1
SV0
Reference voltage parameter (
a
)
0
0
:
:
1
1
0
0
:
:
1
1
0
0
:
:
1
1
0
0
:
:
1
1
0
1
:
:
0
1
0
1
:
:
30
31
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