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參數(shù)資料
| 型號(hào)： | S6B1741 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 128 SEG / 129 COM DRIVER %26 CONTROLLER FOR 4 GRAY SCALE STN LCD |
| 中文描述： | 賽格128/129 COM驅(qū)動(dòng)程序及4級(jí)灰度STN液晶顯示控制器 |
| 文件頁(yè)數(shù)： | 37/78頁(yè) |
| 文件大小： | 472K |
| 代理商： | S6B1741 |
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128SEG/129COM DRIVER & CONTROLLER FOR STN LCD
S6B1741
33
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 V
SS
, and Rb
between V0 and VR.
Example: For the following requirements
LCD driver voltage, V0 = 10V
6-bit reference voltage register = (1, 0, 0, 0, 0, 0)
Maximum current flowing Ra, Rb = 1
μ
A
From Eq. 1
10 = (1 + Rb
Ra ) x V
EV
[V] ------ (Eq.3)
From Eq. 2
V
EV
= (1 - (63-32)
210
) x 2.1 = 1.79
[V] ------ (Eq.4)
From requirement 3.
10
Ra + Rb = 1 [
μ
A] ------ (Eq.5)
From equations Eq.3, 4 and 5
Ra = 1.79 [M
]
Rb = 8.21 [M
]
Table 14 Shows the Range of V0 depending on the above Requirements.
Table 14. 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 15 shows the relationship between V1 to
V4 level and each duty ratio.
Table 15. The Relationship between V1 to V4 Level and Each Duty Ratio
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 = 5 to 12
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| S6B2086X01-T0RA | 制造商:Samsung SDI 功能描述:Q# AG2086 |
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