SH69P56 液晶显示的分压电阻什么的都是内嵌的..
在硬件方面 液晶显示是不是只与 芯片工作电压有关了??
出现了 芯片工作电压 的跳动 造成 液晶 显示 亮度 跳动的现象 !
可以用软件去设置 液晶亮度 的稳定性么 ??
就找到一个相关的寄存器如下,也没什么帮助好像!!
$27 LVD O/S2 O/S1 O/S0 R/W
Bit0: PORTD as LCD SEG1 - 4 control register
Bit1: PORTE as LCD SEG5 - 8 control register
Bit2: LCD SEG9 - 28 as output control register
Bit3: LCD Voltage degrade control register
When LVD is set to 1 and the divider resistance is 270k, LCD voltage power will be degraded to about 90% of VDD. It is designed
to reduce extra LCD contrast control output pins. Then the LCD can be fitted automatically for different voltage levels by the
software.
求达人指教 .. |
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