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NT6828 Datasheet

  • NT6828

  • I2C Bus Controlled On-Screen Display

  • 31頁

  • ETC

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NT6828
I
2
C Bus Controlled On-Screen Display
Features
T
T
T
T
T
T
T
T
I
2
C Bus Interface with Slave Address $7A (Receiver
Only)
Horizontal Frequency Range: 30KHz ~ 120KHz
Flexible Display Resolution: up to 1524 dots per row
Internal PLL Generating a Stable and Wide-Ranged
System Clock (92.2 MHz)
OSD Screen Comprising of Character Arrays of 15
Rows by 30 Columns
12 X 18 Dot Matrix Per Character
Total of 256 Fonts Including 248 ROM Fonts and 8
RAM Fonts
Programmable Vertical and Horizontal Position
Adjustment for OSD Display Position
T
T
T
T
T
T
T
T
T
8-Color Selection for Each Character and 8-Color
Control on Each Row with Overlapped by Windows
Character Blinking, Shadowing & Bordering Display
Effects
Double Character Height and Width for Each Row
Programmable Height of Characters Display
Row To Row Spacing Control
Four Overlapping and Programmable Windows with 8-
Color Control
Hsync & Vsync Input Polarity Selectable
8 Channels PWM DAC with 8 bits resolution & Open-
Drain Output Structure
16 DIP and 24 Skinny DIP packages
General Description
NT6828 is designed for displaying symbols and
characters onto a CRT monitor. Its operation is controlled
by the micro-controller with I2C bus interface. By sending
the proper data and commands to NT6828, it can carry
out the full screen display automatically while the time
base is generated by the on-chip PLL circuit. There are
many functions provided on this chip to fully support
numerous user applications. These functions are:
adjustment of OSD windows position, built-in ROM &
RAM fonts, variable character height with row-to-row
spacing adjustment, 8 color selections for each character,
double height/width controls for each row, four available
overlapping windows with color & size controls, as well as
other I/O interfaces to compliment an external video
chipset.
NT6828 provides eight optional PWM channels with 8-bit
resolution for external digital to analog control.
Pin Configurations
24 Skinny DIP
16 DIP
AGND
AGND
VCO
RP
AVCC
HFLB
N.C.
SDA
SCL
1
2
16
15
DGND
R
G
B
FBKG
PWM/HFTON
VFLB
DVCC
VCO
RP
AV
DD
HFLB
N.C.
SDA
SCL
PWM0
PWM1
PWM2
PWM3
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
DGND
R
G
B
FBKG
PWM/HFTON
VFLB
DVCC
PWM7
PWM6
PWM5
PWM4
NT6828
3
4
5
6
7
8
14
13
12
11
10
9
NT6828K
20
19
18
17
16
15
14
13
1
V2.1

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