UPD6461

DATA SHEET µPD6461, 6462 CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY (12 ROWS × 24 COLUMNS) MOS INTEGRATED CIRCUIT The µPD6461, 6462 are CMOS LSI chips designed to provide on-screen character display for camcorders. When combined with a microcontroller, the µPD6461, 6462 control the display of the characters displayed in the viewfinder (count, time, date, etc.) and the recording of characters onto video tape (time, date, etc.). Each character is created using 12 (width) × 18 (height) dots. Kanji characters and graphic symbols can also be displayed by using two or more characters. The µPD6461, 6462 are compatible with color viewfinders and can output character signals to three channels, the RGB channel for the color viewfinder and the VC1 and VC2 channels for the recording system and monitor terminal. The µPD6461, 6462 also have a power-on clear function and video RAM batch clear command, enabling the number of operations assigned to the microcontroller to be reduced. FEATURES Maximum number of characters: 12 rows × 24 columns (288 characters) Number of character patterns : 256 (µPD6461)/128 (µPD6462) (stored in ROM). Each pattern can be changed by specifying a mask code option. Character size Number of character colors Background : One dot per line or one dot per two lines (field) : 8 : No background, minimum background, or overall background can be selected for the entire screen, together with rimming ON/OFF function. Any one of 8 different colors i...