參數(shù)資料
型號: HD66523R
廠商: Hitachi,Ltd.
英文描述: 240-Channel Common Driver with Internal LCD Timing Circuit(帶內部LCD定時電路的240通道驅動器)
中文描述: 240頻道共同的內部LCD定時電路(帶內部液晶定時電路的240通道驅動器驅動程序)
文件頁數(shù): 21/30頁
文件大小: 139K
代理商: HD66523R
HD66523R
21
Power Supply Circuit
The example of power circuit is shown in Figure 13. When you want to change contrast, both levels, VRH
and VRL must be changed.
+
+
+
V
CC
GND
VLCD
(variable)
V
EE
(variable)
VDD
(fixed)
V
CC
VCH (SEG)
VCL (SEG)
V
EE
VRL (COM)
GND
VM (COM, SEG)
DC/DC
Converter
VLCD
VRH (COM)
Note: VM level must keep following equations;
(VRH–VM) = (VM–VRL)
(VCH–VM) = (VM–VCL)
VCL > GND
VCH < VDD
Figure 14 Example of Power Supply Circuit
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