5 4 3 2 1 VCC-3V3 C7 10uF C0805 GND LCD-PWR R15 10K R0603 LCD_PWR-EN R16 47K R0603 Q5 AO3401 SOT23 3 1 R17 47K R0603 2 Q6 SOT23 8050 LCD Power GND VCC-LCD C8 10uF C0805 C9 104 C0603 VCC-3V3 R18 4K7 R19 4K7 GND To MCU/MPU LVDS VCC-LCD CTP-SCL CTP-SDA TA- TA+ TB- TB+ TC- TC+ TCLK- TCLK+ TD- TD+ VCC-3V3 R20 10K R21 10K CTP-INT CTP-RST BL_EN = 1, BackLight ON BL_EN = 0, BackLight OFF 100Hz~200K Hz PWM The maximum duty cycle, the darkest backlight. The minimum duty cycle, the brightest backlight. PWM BL-EN VCC-5V To MCU/MPU IO J1 NC1 VDD1 VDD2 VDD3 NC2 CTP-SCL CTP-SDA RXIN0- RXIN0+ GND1 RXIN1- RXIN1+ GND2 RXIN2- RXIN2+ GND3 RXCLKIN- RXCLKIN+ GND4 RXIN3- RXIN3+ GND5 NC3 NC4 GND6 NC5 NC6 GND7 CTP-INT CTP-RST BL1-GND BL2-GND BL3-GND NC7 BL-ADJ BL-EN NC8 BL1-5V BL2-5V BL3-5V 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 D C B A