Datasheet Component Blog

April 8, 2010

MAX7456 On Screen Display Video Overlay

Filed under: Uncategorized — admin @ 10:13 am
The MAX7456 single-channel monochrome on-screendisplay (OSD) generator lowers system cost by eliminatingthe need for an external video driver, sync separator,video switch, and EEPROM. The MAX7456 servesall national and international markets with 256 user-programmablecharacters in NTSC and PAL standards.The MAX7456 easily displays information such as companylogo, custom graphics, time, and date with arbitrarycharacters and sizes. The MAX7456 is preloadedwith 256 characters and pictographs and can be reprogrammedin-circuit using the SPITM port.
Features:
♦ 256 User-Defined Characters or Pictographs in Integrated EEPROM
♦ 12 x 18 Pixel Character Size
♦ Blinking, Inverse, and Background Control Character Attributes
♦ Selectable Brightness by Row
♦ Displays Up to 16 Rows x 30 Characters
♦ Sag Compensation On Video-Driver Output
♦ LOS, VSYNC, HSYNC, and Clock Outputs
♦ Internal Sync Generator
♦ NTSC and PAL Compatible
♦ SPI-Compatible Serial Interface
♦ Delivered with Preprogrammed Character Set
Example circuit:

Maxim max7456 example circuit

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