Weltrend Semiconductor, Inc.
WT6801
Monitor On-Screen Display
Data Sheet
REV. 1.0
June 27, 2000
The information in this document is subject to change without notice.
©Weltrend
Semiconductor, Inc. All Rights Reserved.
2F, No. 24, Industry E. 9
th
RD., Science-Based Industrial Park, Hsin-Chu, Taiwan
TEL:886-3-5780241 FAX:886-3-5794278.5770419
Email:support@weltrend.com.tw
WT6801
Data Sheet Rev. 1.0
GENERAL DESCRIPTION
The WT6801 is designed to display color symbols or characters onto monitor. By storing display data in its
RAM and control information in the registers via I
2
C interface, WT6801 can carry out screen refresh without
any MCU supervision.
FEATURES
•
Programmable horizontal resolutions up to 1530 dots per line
•
Horizontal frequency up to 120KHz
•
On-chip PLL up to 96MHz
•
Fully programmable character array of 15 rows by 30 columns
•
12x18 dot matrix per character
•
256 characters and graphic symbols ROM including 16 multi-color fonts
•
8 colors per display character
•
7 colors per display character background
•
4 programmable windows
•
Double character height and width control
•
Programmable character height (18 to 71 lines)
•
Programmable row-to-row spacing
•
Programmable vertical and horizontal positioning for display screen center
•
Bordering, shadowing and blinking effect
•
Fade-in/Fade-out effect
•
Video timing capture for auto sizing
•
I
2
C interface with slave address $7AH
•
Package type : 16-pin and 20-pin plastic DIP/SOP
PIN CONFIGURATION
WT6801N160
WT6801S160
VSSA
LF
VCO
VDDA
HFLB
CLKIN
SDA
SCL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VSS
ROUT
GOUT
BOUT
FBKG
HFX
VFLB
VDD
VSSA
LF
VCO
VDDA
HFLB
CLKIN
SDA
SCL
BIN
GIN
1
2
3
4
5
6
7
8
9
10
WT6801N200
WT6801S200
20
19
18
17
16
15
14
13
12
11
RIN
VSS
ROUT
GOUT
BOUT
FBKG
HFX
VFLB
VDD
Weltrend Semiconductor, Inc.
Page 2
WT6801
Data Sheet Rev. 1.0
PIN DESCRIPTION
Pin No.
N160
S160
N200
S200
Pin Name
VSSA
LF
VCO
VDDA
HFLB
CLKIN
SDA
SCL
BIN
GIN
RIN
NC
VDD
VFLB
HFX
FBKG
BOUT
GOUT
ROUT
VSS
I/O
Description
Analog ground.
Loop filter of PLL.
VCO control voltage input.
Analog power supply
Horizontal sync input.
External clock input.
Serial data of I
2
C interface.
Serial clock of I
2
C interface.
Blue color input.
Green color input.
Red color input.
No Connection.
Digital power supply
Vertical sync input.
Output a sync signal with N times Hsync input frequency.
Fast Blanking output. This pin controls the mixer of vedio amplifier
to cutoff the video signal while displaying character or window.
Blue color output
Green color output
Red color output
Digital ground
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
I/O
I/O
I
I
I/O
I
I
I
I
I
O
O
O
O
O
Weltrend Semiconductor, Inc.
Page 3
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