![]() ![]() This voltage across VEE pin defines the contrast. This is usually done by connecting 10K potentiometer to +5V and ground and then connecting slider pin to VEE of LCD Module. PIN3 (VEE): This pin usually used to adjust a contrast. PIN2 (VCC): +5V supply should be given to this pin as VCC PIN1 (VSS): Ground (GND) Pin of JHD162A LCD Module Let’s understand function of each pin provided on JHD162A LCD Module and are given as below: I recommend you to keep datasheet in-hand, to download click here: JHD162A LCD Datasheet JHD162A 16×2 Character LCD JHD162A LCD Pins Desciptionīefore wiring up circuit between JHD162A LCD and LPC2148 Microcontroller. Let’s first try to understand its pins and related functions. ![]() You can easily buy this cheap china made LCD in almost every supplier shop. This LCD controller can be operated in 4-bit or 8-bit mode. JHD162A LCD Module: Character LCD Display We’ll get into that later in circuit diagram. Otherwise, you may need to wire up additional circuitry. Since, the board we will be using for our experiment have on board +5V so we don’t need to use any level shifter circuit. Usually, LCD operates at 5V but LPC2148 operates at 3.3V. NOTE: Procedure to interface LCD with LPC2148 ARM7 Microcontroller could be little bit different when compared to other 8-bit microcontrollers such as 8051, AVR and other chips which operates at 5V.
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