Introduction

The PIC16(L)F19197 8-bit microcontroller features an integrated Liquid Crystal Display (LCD) Controller module that provides the necessary components internally to directly drive a wide range of segmented displays, while meeting the low-power design requirements of many LCD applications. It features integrated bias generation and software contrast control, with the option of using the internal LCD charge pump to generate the voltages necessary to drive an LCD panel. The features that are found in this LCD module provide the flexibility to drive a wide variety of LCD panels with ease, while removing the need for an extensive list of external hardware components to generate bias voltages and control the contrast of the display while maintaining low-power consumption. This technical brief will give an overview of the LCD module, and go into detail regarding bias generation and contrast control using the internal LCD charge pump.