LC74723M Datasheet | SANYO

Ordering number : EN4841C CMOS LSI LC74723, 74723M On-Screen Display Controller Overview The LC74723 and LC74723M are on-screen display controller CMOS LSIs that display characters and patterns on a TV screen under microprocessor control. Characters are 8 × 8 dots, and a dot interpolation function is provided. The LC74723 can display 24 characters × 10 lines of text. Package Dimensions unit: mm 3067-DIP24S [LC74723] Features - Screen structure: 24 characters × 10 lines (up to 240 characters) - Character structure: 8 (horizontal) × 8 (vertical) (interpolation function supported) - Character sizes: Two horizontal and two vertical sizes - Number of characters: 64 - Display start position: 64 horizontal and 64 vertical positions - Blinking: In character units - Blinking types: Two, with periods of 0.5 and 1.0 seconds - Blue background screen display: (in internal synchronization mode) - External control inputs: 8-bit serial input interface - Built-in sync separator circuit - Video output: pound NTSC and PAL-M output - Packages: 24-pin plastic MFP (375 mil) 24-pin plastic DIP (300 mil) SANYO: DIP24S unit: mm 3045B-MFP24 [LC74723M] 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)/41596TH (OT)/83194TH (OT) No. 4841-1/12 LC74723, 74723M Pin Assignment Pin Functions Pin No. 1 2 3 4 5 6 7 Symbol VSS1 Xtal IN Xtal OUT CTRL1 CSYNOUT OSCIN OSCOUT Ground Crystal oscillator connection Crystal oscillator input switching posite synchronization signal output LC oscillator Function Ground (digital system ground) Used either for connecting the external crystal and capacitor that are used for internal synchronization signal generation, or to input an external clock signal (2fsc or 4fsc). Switches the LC74723 between external clock input mode and crystal oscillator mode. Low = crystal oscillator mode, high = external clock mode Outputs a posite synchronization...