UPD6466GS datasheet(40/70 Pages) NEC

40 / 70 page

µPD6466

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Framing control

Whether a character is framed is specified in screen units.

Framing: If the rightmost or leftmost dots of the dot matrix forming a character are used, the frame is

displayed in the adjacent character display area. If the rightmost or leftmost dots of the dot matrix

are not used, the frame is displayed on the left or the right of, above, or upper or lower left or

right of the character. Even when the top or bottom dot is used, framing does not overlap the

line above or below. Dots other than those at the top or bottom of the dot matrix are framed

vertically, horizontally, and diagonally.

Character dots

Framing

The size of the framing is fixed to one dot of the minimum size even if the character size changes.

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Background control

No background, blank background, or filled background can be selected in screen units. The background

color is selected by the background color/framing color control command.

No background

: Only character data is output.

Blank background : The background is displayed in the display area of the characters written to the video

RAM and the portion overlapping by one dot of the minimum size from the rightmost

and leftmost position of that area.

Filled background : In addition to the area where the background is displayed in the blank background

mode above, the background is displayed in the areas other than the character display

area.

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Background and frame display in the case of RGB + VC1 + VC2 output

The portion of the character for which VC2 is specified by the display character control command is not output

to the RGB and VC1 channels. Therefore, even if a background (blank background or filled background)

is specified for the RGB or VC1 output, no background is displayed in the VC2-specified area. In addition,

no background is displayed at the portion of the character other than those specified by VC2 in the case

of VC2 output (for the details of display of VC2-specified character area for RGB and VC1 output, refer to 1.3

Display with RGB + VC1 + VC2 Pins and 1.3.4 Displaying characters specified by VC2).

When RGB + RGB compatible BLK output is selected, only the background control bit of RGB output is valid,

and the background control bit of VC1 output and VC2 output is invalid (when RGB + RGB compatible BLK

output is selected, the VC2 output pin is not used. The VC1 channel outputs the logical sum of the RGB

output).

UPD6466GS Datasheet(PDF) 40 Page - NEC