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| Weltrend Semiconductor, Inc. WT6805 Monitor On-Screen Display Preliminary Data Sheet REV. 1.0 December 3, 2001 The information in this document is subject to change without notice. (c)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 eltrend GENERAL DESCRIPTION WT6805 Data Sheet Rev. 1.0 The WT6805 is an on-screen display (OSD) IC which display color symbols or characters onto monitor. With the control of microcontroller through I2C interface, it can display characters with special effect like blinking or shadowing automatically. FEATURES * Programmable horizontal resolutions up to 1530 dots per line * Horizontal frequency up to 150KHz * On-chip PLL up to 150MHz * Fully programmable character array of 15 rows by 30 columns * 12x18 dot matrix per character * 512 characters and graphic symbols ROM * 16 multi-color fonts * 8 user RAM font * 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, blinking and box effect * Fade-in/fade-out effects * I2C interface with slave address $7AH * Power supply : 5V * Package type : 16-pin plastic DIP/SOP PIN ASSIGNMENT AND PACKAGE TYPE PACKAGE TYPE : PDIP-16, SOP-16 Weltrend Semiconductor, Inc. Page 2 eltrend Pin Name VSSA RV VCO VDDA HFLB CLKIN SDA SCL VDD VFLB POUT FBKG BOUT GOUT ROUT VSS I O O O O O I I I/O I I I/O WT6805 Data Sheet Rev. 1.0 Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 I/O Analog ground. Description A resistor can be connected to this pin for control VCO range. Loop filter of PLL. Analog power supply Horizontal sync input. External clock input. Serial data of I2C interface. Serial clock of I2C interface. Digital power supply Vertical sync input. General purpose output pad 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 Weltrend Semiconductor, Inc. Page 3 |
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