The PD16662 is a column (segment) driver which contains a RAM capable of full dot LCD drive. With 240 outputs, this driver has a display RAM of 240 x 160 x 2 bits built in, and 4 gray scales of display are possible. Any 4 gray scales can be selected from 25 levels of the gray scale pallet. The driver can be combined with the PD16667 to display from 240 x 160 dots to 480 x 320 dots.