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| 型號(hào)： | KS0724 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 65 COM / 132 SEG DRIVER & CONTROLLER FOR STN LCD |
| 中文描述： | 65的COM / 132賽格驅(qū)動(dòng) |
| 文件頁(yè)數(shù)： | 32/66頁(yè) |
| 文件大?。?/td> | 899K |
| 代理商： | KS0724 |
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65 COM / 132 SEG DRIVER & CONTROLLER FOR STN LCD PRELIMINARY SPEC. VER. 0.8 KS0724
28
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
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
1.698
[V] ------ (Eq. 4)
162
From requirement 3.
10
= 1 [uA] ------ (Eq. 5)
Ra + Rb
From equations Eq. 3, 4 and 5
Ra
1.69 [M
]
Rb
8.31 [M
]
The following table shows the range of V0 depending on the above requirements.
Table 16. V0 Depending on Electronic Volume Level
Electronic volume level
0
.......
32
.......
63
V0
7.57
.......
10.00
.......
12.43
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