參數(shù)資料
型號(hào)： S6B0759
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： 81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD
中文描述： 81的COM / 128賽格驅(qū)動(dòng)
文件頁數(shù)： 33/68頁
文件大?。?/td> 657K
代理商： S6B0759
S6B0759 PRELIMINARY SPEC. VER. 1.2
81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD
29
In Case of Using External Resistors, Ra and Rb (INTRS = "L")
When INTRS pin is
"
L
"
, it is necessary to connect external regulator resistor Ra between VR and VSS, and Rb
between V0 and VR.
Example: For the following requirements
1. LCD driver voltage, V0 = 10V
2. 6-bit reference voltage register = (1, 0, 0, 0, 0, 0)
3. Maximum current flowing Ra, Rb = 1 uA
From Eq. 1
Rb
10 = (1 +
) x V
EV
[V] ------ (Eq. 3)
Ra
From Eq. 2
(63 - 32)
V
EV
= (1 -
) x 2.1 = 1.79
[V] ------ (Eq. 4)
210
From requirement 3.
10
= 1 [uA] ------ (Eq. 5)
Ra + Rb
From equations Eq. 3, 4 and 5
Ra = 1.79 [M
]
Rb = 8.21 [M
]
Table 13 Shows the Range of V0 depending on the above Requirements.
Table 13. The Range of V0
Electronic volume level
0
.......
32
.......
63
V0
8.21
.......
10.00
.......
11.73
Voltage Follower Circuits
VLCD voltage (V0) is resistively divided into four voltage levels (V1, V2, V3 and V4), and those output impedance
are converted by the Voltage Follower for increasing drive capability. Table 14 shows the relationship between V1 to
V4 level and each duty ratio.
Table 14
LCD bias
V1
V2
V3
V4
Remarks
1/N
(N-1)/N x V0
(N-2)/N x V0
2/N x V0
1/N x V0
N = 4 to 11
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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S6B1400X 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:104 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD
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