器件名称:
LC74731
功能描述:
On-Screen Display Controller
文件大小:
157.29KB 共38页
简 介:
Ordering number : ENN*6526 CMOS IC LC74731W,74732W On-Screen Display Controller Preliminary Overview 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 × 16-dot characters and up to 12 lines of text with 24 characters per line. 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, NTSC 4.43, and PAL 60 composite video signal outputs Supports Y/C input Features Text structure: 12 lines × 24 characters (Up to 288 characters) Character format: 16 × 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) [Reference] JIS X0298 (1990): 6877 characters JIS level 1 kanji: 2965 cha……
