参数资料
型号: SPLC782A
厂商: Electronic Theatre Controls, Inc.
英文描述: 16COM/40SEG Controller/Driver
中文描述: 16COM/40SEG控制器/驱动器
文件页数: 20/40页
文件大小: 1670K
代理商: SPLC782A
SPLC782A
5.15. Supply Voltage for LCD Drive
Sunplus Technology Co., Ltd.
Proprietary & Confidential
20
FEB. 15, 2005
Version: 1.7
LCD bias can be selected by open/short V2 and V3 pins.
1/8, 1/11
1/16
Duty Factor
Supply
Voltage
1/4
1/5
V2, V3
Short
Open
SPLC782A
V2
V3
short
V2
V3
open
SPLC782A
1/5 Bias
(1/16 Duty)
1/4 Bias
(1/8, 1/11 Duty)
Figure 5-29:
5.15.1. The relations between LCD frame
s frequency and oscillator
s frequency
SunpusConidenia
(Assume the oscillation frequency is 250KHz, 1 clock cycle time = 4.0
s)
Fo PARTMNERUseOny
5.15.2. 1/8 Duty, type-A waveform
Figure 5-30:
1/8 Duty type-A waveform
5.15.3. 1/11 Duty, type-A waveform
Figure 5-31:
1/11 Duty type-A waveform
1 frame = 4 (
s) x 400 x 8 = 12800 (
s) = 12.8 ms
Frame frequency =
1
12.8 (ms)
= 78.1 (Hz)
COM1
1 frame
1
2
3
4
8
1
2
400 clocks
VPP
V1
V2(V3)
V4
VSS
1 frame = 4 (
s) x 400 x 11 = 17600 (
s) = 17.6 ms
1
17.6 (ms)
Frame frequency =
= 56.8 (Hz)
VPP
V1
V2(V3)
V4
VSS
COM1
1 frame
1
2
3
4
400 clocks
11
1
2
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