Weltrend Semiconductor, Inc.
WT6803
Monitor On-Screen Display
Data Sheet
REV. 1.01
September 24, 2001
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
WT6803
Data Sheet Rev. 1.01
GENERAL DESCRIPTION
WT6803 is designed to interface with a MCU to do the OSD (On Screen Display) function in CRT monitor.
The on-chip PLL generates a wide-ranged system clock up to 160 MHz to meet the resolution
requirements (OSD resolution is programmable) of different display modes. The full OSD screen size is 30
columns x 15 rows, and setting the internal registers can freely program the OSD position. Special
functions include color font, character bordering, shadowing, blinking, double height, double width, all
blanking effect, row to row spacing control, 4 windows with shadowing and programmable fin in / fan out
effect.
FEATURES
•
Programmable horizontal resolutions up to 2040 dots per line
•
Horizontal frequency up to 150kHz
•
Dot Frequency generated by On-chip PLL up to 160MHz
•
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
•
8 colors per display window
•
8 colors per display window shadowing
•
Double character height and width control
•
Programmable character height (18 to 69 lines)
•
Programmable row-to-row spacing
•
Programmable OSD vertical and horizontal starting position
•
Bordering, shadowing and blinking effect
•
Fade-in/fade-out effects
•
I
2
C interface with slave address $7AH
•
Power supply: 5V
•
Package type: 16-pin plastic DIP
PIN CONFIGURATION
VSSA 1
NC 2
VCO 3
VDDA 4
HS 5
NC 6
SDA 7
SCL 8
16 VSS
15 R
14 G
13 B
12 BLANK
11 NC
10 VS
9 VDD
Weltrend Semiconductor, Inc.
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WT6803