MSM6255

E2B0039-27-Y2 ¡ Semiconductor ¡ Semiconductor MSM6255 DOT MATRIX LCD CONTROLLER This version: Nov. 1997 MSM6255 Previous version: Mar. 1996 GENERAL DESCRIPTION The MSM6255 is a CMOS si-gate LSI designed to display characters and graphics on a DOT MATRIX LCD panel. FEATURES Display control capacity – Graphic mode – Character mode : 512,000 dots (216 bytes) Memory address MA0 to MA15 : 65,536 characters (216 bytes) Display address MA0 to MA15 Direct interface with 8085 or Z80 CPU Duty : 1/2 to 1/256 selectable Attributes – Screen clear – Cursor ON/OFF/blink Scrolling and paging Display system : AC inversion at each frame Data output (upper and lower display outputs) 4-bit parallel output, 2-bit parallel output, 1-bit serial output Crystal oscillation/external clock selectable Single +5V power supply Package options: 80-pin plastic QFP (QFP80-P-1420-0.80-K) (Product name: MSM6255GS-K) 80-pin plastic QFP (QFP80-P-1420-0.80-BK) (Product name: MSM6255GS-BK) 1/39 RD SLR Start address (lower) Start SUAR address (upper) WR CS CUP Cursor address CMP BLOCK DIAGRAM ¡ Semiconductor DB0 - DB7 CLR Cursor address CMP Input register Output register Instruction register R/W control CPR Cursor generation circuit CMP ADF CMP Vp counter Cursor position (upper) CMP Linear address counter MA0 - MA15 3-state output RES CPR Cursor position (lower) VDD Number DPR of Vp MPX VSS Number DUR of duty CMP Duty counter A0 - A15 DIEN Number of HNR characters horizont...