The HT1625 by Holtek is a LCD driver ROHS-compliant IC packaged in a QFP-100 package (14x20). It is a high-performance device for driving LCD modules and used in various small-size and low-power communication systems. It has built-in RAM and clock circuits to reduce system cost and simplify connections to LCD modules. The integrated features include - display modes of 1/2/4/8 commons, 3/4 analog voltage RGB input (1-chip color STN) support, single chip control of TFT/STN panel (24-bit color TFT), internal RAM for displaying letters, symbols and gradiation, LCD power off/on switching control, various oscillator frequency selection and high temperature and voltage operation stability. The integrated features reduce external components cost, design time and number of interconnects. It is clocked up to 40MHz and have a lower voltage level operation suitable for low power applications.