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An LCD and controller interface circuit diagram
Source: InternetPublisher:国民男神经 Keywords: LCD lcd circuit controller Updated: 2021/09/14
In this design, 741S245 is selected as the bus driver, and a 5 V pull-up resistor is added to the microcontroller pin to ensure the signal driving capability. The interface circuit schematic is shown in the figure, in which P3 and P7 are the I/O ports of the microcontroller. , RV1 is an adjustable resistor, used to adjust the backlight contrast of the LCD module.
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