ON Semiconductor LC74731WS-9818-E

Description
The LC74731W and LC74732W are on-screen display CMOS ICs that display characters and patterns on a TV screen under the control of a microcontroller. These ICs display 16 x 16-dot characters and up to 12 lines of text with 24 characters per line.

Features
Text structure: 12 lines x 24 characters (Up to 288 characters)
Character format: 16 x 16 dots
Character display clock frequency: about 9 MHz
Character sizes: Four sizes each in the horizontal and vertical directions with the size set in line units.
Number of characters supported:
LC74731W: 256 (internal)
LC74732W: 512 (internal)
Up to 8192 using an external ROM (for Japanese)
Character color: Eight colors in character units (in internal synchronization mode): 2 fsc and 4 fsc (Black, red, green, yellow, blue, magenta, cyan, and white)
Character background color: Eight colors (in internal synchronization mode): 2 fsc and 4 fsc. (Black, red, green, yellow, blue, magenta, cyan, and transparent)
Screen background color: Eight colors (in internal synchronization mode): 2 fsc and 4 fsc (Black, red, green, yellow, blue, magenta, cyan, and white)
External control inputs: Serial interface with an 8-bit data size.
Built-in sync separator circuit
Video outputs: NTSC, PAL, PALM, PALN, NTSC4.43. and PAL. 60 composite video signal outputs
Supports Y/C input

Applications
On-screen display for TVs and monitors
Character and pattern generation for video games and other applications