UPD6466 Datasheet, PDF (30/70 Pages) NEC – ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER, 12-ROW, 24-COLUMN, CAMERA-CONTAINED VCR

µPD6466
3.6 Blue Back ON/OFF Command
This command turns ON/OFF the blue back function in screen units.
(1) With MSB first (The command is input from MSB (D7).)
(MSB)
(LSB)
D7 D6 D5 D4 D3 D2 D1 D0
0
1
1
1
1 CLR 0 BB
BB
0
1
CLR
0
1
Blue back control bit
Function
Blue back OFF
Blue back ON
Color specification bit
Function
White
Blue
(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)
(LSB)
(MSB)
D0 D1 D2 D3 D4 D5 D6 D7
BB 0 CLR 1 1 1 1 0
By turning ON the blue back function, the character, framing, and area where no background is output are all
displayed in blue. This command is valid only for RGB output.
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