When performing Uart communication, in the case of 3M bit/s communication rate, communication cannot be realized, the circuit waveform has large distortion. At 115200 bit/s, the circuit can realize normal communication.
The test found that at the 3M bit/s rate, the waveform on the opencpu side of the level-shifting chip (on the left side of the chip) is normal, and the distortion on the TC233 side (on the right side of the chip) is severe. The details are as shown below：
Could you please help me solve this problem？
Thank you very much!
