HT16C22 -- RAM Mapping 44*4 LCD Controller Driver General Description Features Operating voltage:2.4~5.5V Internal 32kHz RC oscillator Bias: 1/2 or 1/3; Duty: 1/4 Internal LCD bias generation with voltage-follower buffers I2C-bus interface Two Selectable LCD frame frequencies: 80Hz or 160Hz 44 x 4 bits RAM for display data storage Max. 44 x 4 patterns, 44 segments and 4 commons Versatile blinking modes R/W address auto increment Internal 16-step voltage adjustment to adjust LCD operating voltage Low power consumption Provides VLCD pin to adjust LCD operating voltage Manufactured in silicon gate CMOS process Package Type: 44QFP, 48LQFP, 52QFP and chip