NT68275 View Datasheet(PDF) - Novatek Microelectronics
Part Name
Description
Manufacturer
NT68275 Datasheet PDF : 38 Pages
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NT68275
List of Control Registers:
(1) Display Register: Row 0 – 14 , Column 0 – 29
8
7
6
5
4
3
2
Row 0-14
Column 0-29
*Page MSB
Font’s Address $00 - $1FF
1
0
LSB
Bit 8: * Page - This bit will address the page 1 ROM font area by bit 7-0 of this control register. Otherwise, it
will address page 0. This can be set by the bit5 column data at IIC bus transmission. Refer to
Figure 8-1 & 8-3 for ROM font area.
Bit 7-0: These eight bits will address one of the 256 characters/ symbols residing in the character ROM fonts.
Note that if user sets MCFONT bit (row 15, column 22) to ‘1’, the 0 ~ 256 will address standard ROM
fonts, and if cleared to ‘0’, the 0 ~ 239 will address standard ROM fonts & 240 ~ 255, multi -color ROM
fonts.
(2) Character Attribute Register: Row 0 – 14, Column 0 – 29
Row 0-14
Column 0-29
7
6
5
4
3
2
1
0
BKR BKG BKB BLINK R
G
B
Character Attribute Control
Bit 6-4: BKR/G/B -These three bits define the color attribute of the background for the corresponding
character/symbol. If all three bits are cleared, no background will be displayed. Refer to the
TAB 3 for the color selections.
Bit 3: BLINK - This bit enables the blinking effect of the corresponding character/symbol with this bit set to
‘1’. The blinking frequency is approximately 1Hz with a fifty-fifty duty cycle at 80Hz vertical sync
frequency.
Bit 2-0: R/G/B -These three bits define the color attribute of the corresponding character/symbol. Refer to the
TAB 2 for the color selections.
TAB 2. Character/Window Color Selection
TAB 3. Character/Window Background Color Selection
COLOR
R
G
B
Black
0
0
0
Blue
0
0
1
Green
0
1
0
Cyan
0
1
1
Red
1
0
0
Magenta
1
0
1
Yellow
1
1
0
White
1
1
1
COLOR
R
G
B
No Background
0
0
0
Blue
0
0
1
Green
0
1
0
Cyan
0
1
1
Red
1
0
0
Magenta
1
0
1
Yellow
1
1
0
White
1
1
1
11
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