深圳市广辉电子有限公司

 UPD6464AGT-101/D6464AGT101字符叠加芯片(OSD)

ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR

FEATURES
• Video signal input/output : Composite video signal
• Number of display characters : 12 lines, 24 columns (288 characters)
• Number of character types : 128 (mPD6464A)/256 (mPD6465) (ROM). Variable by mask code option.
• Character size : 1 dot/1 line. 2 lines (field) can be displayed in line units.
• Character color : White (single color)
• Background : No background, black framing, black-on-white, and black filling
• Dot matrix : 12 (horizontal) ´ 18 (vertical) dots without gap between adjacent characters
• Blinking : Blinking can be turned ON/OFF in character units. Blinking ratio is 1:1.
Blinking frequency is selectable from about 0.5 Hz, 1 Hz, and 2 Hz in screen
units.
• Character signal output: : Can support VCRs with S pins if external mixer is connected because
character signal and blanking signal output pins are provided.
• Video RAM data clear : Video RAM data are cleared by video RAM clear command and power-ON
clear function.
• Supported video signal method : NTSC/PAL/PAL-M/SECAM/PAL-N (mPD6464A only)
• Internal circuit : Synchronization separation circuit for composite synchronizing signal and ´4
multiplier
• Interface with microcomputer : Serial input type of 8-bit variable word length
• Supply voltage : +5 V, single power supp