If your circuit using Inx In518 is not working:
is the bottom-left when the notch is facing upward. Pin 18 is bottom-right. Always confirm with a multimeter between VSS (pin 1) and VDD (pin 17) before applying power. Inx In518 Ic Pinout Diagram
The main analog power supply for the display’s source drivers, often around VCC / 3.3V: The logic supply voltage for the IC's internal operations. 12V (Main Input): If your circuit using Inx In518 is not
Internal Regulator Output. Usually bypassed with a small capacitor. 1. VIN (Input Voltage) Inx In518 Ic Pinout Diagram