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WT6802 - Monitor OSD

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General Description

WT6802 is designed to interface with a MCU to do the OSD (On Screen Display) function in CRT Monitor, besides the fancy auto-calibration function is also included.

The on-chip PLL generates a wide-ranged system clock up to 60MHz 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 the OSD position can be freely programmed by setting the interal registers.

Overview

Weltrend Semiconductor, Inc.

WT6802 Monitor OSD with Auto-calibration Data Sheet REV.

1.0 April, 9, 2001 The information in this document is subject to change without notice.

Key Features

  • sInput horizontal synchronous frequency … … .15k-130kHZ sDot Frequency generated by On-chip PLL … . . up to 160MHz sResolution … … … programmable, up to 2040 dots/line sScreen … … … … … … … … … . .30 columns x 15 rows sCharacter … . .12(H) x 18(V) dot matrix Fonts … … … … 512 characters and 16 color fonts MCU interface I2 C bus sColor(R, G, B with intensity attribute) Character foreground 8(R, G, B) Character background 7(no blank) Window 8(R, G, B) Window shadowing s PWM DAC 8(R, G,.

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