The HT1621BQ with LQFP-48 LCD Drivers ROHS is a display driver produced by HGSEMI. It is a multifunctional chip designed for LCD display devices. It contains 48 pins that enable it to control several LCD dot matrices, and select one of these dot matrices for display. The device contains an LED display driver, an LCD segment driver, and an LCD common driver. It also has 8-bits of RAM and can store up to 72 bits of data, which makes it suitable for multiplexing and display applications. It works with a wide range of voltage levels and is RoHS compliant. It is suitable for many applications such as digital clocks, digital thermometers, and meters.