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RA4M系列MCU的LCD驱动可以在VL4和VCC之间加电阻调整VL4引脚的电压来控制对比度吗?还有,若采用外部电阻分压和话几个电阻阻值可以不一样吗?谢谢
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RA4M系列MCU的LCD驱动可以在VL4和VCC之间加电阻调整VL4引脚的电压来控制对比度吗?还有,若采用外部电阻分压和话几个电阻阻值可以不一样吗?谢谢
大佬求求你了
1 month ago
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NP_Renesas
1 month ago
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您好, 不建议在VCC和VL4之间加电阻,可能会影响到VCC关联的其余电路,如果需要控制对比度,建议参考手册中的分压电路来控制。 电阻值可以不同,根据您需要的VLCD值和信号点来设置,可以参考此表格: 电阻值推荐为10K~1M: