7220 Datasheet, PDF (110/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

FUNCTIONAL DESCRIPTION
2.11 CRT display function
Table 2.11.5 Display example of character background coloring (when green is set for a character
and blue is set for background color)
Border selection register
Color register
G output
MD0 COn7 COn6 COn5 COn4 COn3 COn2 COn1
B output
OUT1 output
Character output
OUT2 output
Green
0 0!01 0 1 0
(Note 1)
No output
Same output as Video signal and character
character A
color (green) are not mixed.
Green
No output
(Note 2)
01 ^!0 1 01 0
No output
Same output as Video signal and character
character A
color (green) are not mixed.
Green
00 01001 0
No output
Blank output ^{TV image of character}
background is not displayed.
Green
000 11 0 10
Blue
1! ! 0 1 0 1 0
Background
color
No output
Blank output
TV image of character
background is not displayed.
Border
output
(Black)
Green
Border output Video signal and character
(Black)
color (green) are not mixed.
Green
1 0 0 10 0 1 0
No output
Black
Blank output ^{TV image of character}
background is not displayed.
10 011 0 1 0
Background
color – border
Blank output
Border
output
(Black)
Green
Blue
TV image of character
background is not displayed.
Notes 1 : When COn5 = “0” and COn4 = “1,” there is output same as a character or border output from the OUT1 pin.
Do not set COn5 = “0” and COn4 = “0.”
2 : When only COn7 = “1” and COn5 = “0,” there is output from the OUT2 pin.
3 : The portion “A” in which character dots are displayed is not mixed with any TV video signal.
4 : The wavy-lined arrows in the Table denote video signals.
5 : n : 0 to 3, ! : 0 or 1
Blank output
No output
(Note 2)
No output
(Note 2)
No output
(Note 2)
No output
(Note 2)
No output
(Note 2)
7220 Group User’s Manual
2-83