LC74785 Datasheet | SANYO

Overview The LC74785 and LC74785M are on-chip EDS CMOS LSIs for on-screen display, a function that displays characters and patterns on a TV screen under microprocessor control. These LSIs support 12 × 18 dot characters and can display 12 lines by 24 characters of text. Package Dimensions unit: mm 3067-DIP24S [LC74785] Features - Display format: 24 characters by 12 rows (Up to 288 characters) - Character format: 12 (horizontal) × 18 (vertical) dots - Character sizes: Three sizes each in the horizontal and vertical directions - Characters in font: 128 - Initial display positions: 64 horizontal positions and 64 vertical positions - Blinking: Specifiable in character units - Blinking types: Two periods supported: About 1.0 second and about 0.5 second - Blanking: Over the whole font (12 × 18 dots) - Background color - Background coloring: 8 colors (internal synchronization mode): 4fsc - Background coloring: 6 colors (internal synchronization mode): 2fsc - Line background color - Can be set for 3 lines - Line background coloring: 8 colors (internal synchronization mode): 4fsc - Line background coloring: 6 colors (internal synchronization mode): 2fsc - External control input: 8-bit serial input format - On-chip sync separator circuit - EDS support - Video output - NTSC-format posite output - Package 24-pin plastic DIP (300 mil) 24-pin plastic SOP (375 mil) SANYO: DIP24S unit: mm 3045B-MFP24 [LC74785M] SANYO: MFP24 SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 63097HA (OT) No. 5520-1/24 LC74785, LC74785M Pin Assignment Pin Functions Pin No. 1 2 Pin VSS1 Xtal IN Xtal OUT (MUTE) Crystal oscillator (MUTE input) Function Ground Notes Ground connection (digital system ground) These pins are used either to connect the crystal and capacitor used to form an external crystal oscillator used to generate the internal synchronizing signals, or to input an external clock signal (2fsc or...