MSM6794

E2B0046-27-Y2 ¡ Semiconductor ¡ Semiconductor MSM6794 DOT MATRIX LCD DRIVER WITH 128-CHANNEL RAM This version: Nov. 1997 MSM6794 Previous version: Mar. 1996 GENERAL DESCRIPTION The MSM6794 is a dot matrix graphic liquid crystal display LSI device to display bit maps. It drives an LCD panel for dot matrix graphic display under the control of a 4- or 8-bit microcomputer. All necessary functions for driving a bit map type LCD are built in on one chip. Therefore,by using the MSM6794, a bit map type dot matrix graphic liquid crystal display system can be implemented with a small number of chips. Since 1-bit data of the display RAM corresponds to the light-on/off of 1-dot of the LCD panel (bit map system), a flexible display, including kanji display, is possible. One chip comprises a graphic display system of a maximum of 128¥48 dots. This display can be expanded by using multiple chips. The MSM6794 uses CMOS process. Since it is an internal RAM type, the MSM 6794 features low power consumption, and is suited to display for battery-driven portable equipment. FEATURES Segment outputs Common outputs Display duty Bit map type internal RAM Display data I/F Standby function by program LCD drive bias resistor (externally connected) Built-in voltage multiplier circuit LOGIC voltage LCD driving voltage Low current consumption Number of pads : : : : : Maximum of 128 Maximum of 48 1/33, 1/41, 1/44, 1/48 6,144 bits (128¥48 bits) 8-bit parallel/serial switchable : ...