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In this lesson we鈥檙e going to learn about the touch circuit of the OLED screen in the entire circuit diagram

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In the circuit diagram, J6400 is a display touch connector, which contains a touch circuit

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Let's take a look

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In this mobile phone, the touch circuit is referred to as TS

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Here is TS_RESET_N, which is the reset signal

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TS_INT_N, this is an interrupt, this TS_TA is actually an interrupt signal

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Here is the I2C bus

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The data transmission of the touch circuit is completed by the I2C bus

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Here are TS_I2C_SCL and TS_I2C_SDA, this is its bus

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TS_RESET is the touch reset signal

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The following TS_INT_N is the interrupt signal of the touch chip

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TS_TA is another interrupt signal of the touch chip, the sensor is interrupted

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These two are the I2C bus

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All the power supplies and signals of the touch circuit must go to this touch connector

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The signals are all communicated with the CPU,

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that is, connected to the CPU

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The power supply of the touch circuit is 3.3 V and the other is 1.8 V

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In some circuits, 3.3V will be marked as TP_3P3

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This is the power supply and signal of the touch circuit

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That's all for this lesson