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MC141540P4 bảng dữ liệu(PDF) 8 Page - Motorola, Inc |
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MC141540P4 bảng dữ liệu(HTML) 8 Page - Motorola, Inc |
8 / 12 page MC141540 MOTOROLA 8 VFLB . . . . . . variable number of H scan lines vertical delay = VERTD x 4 + 1 H scan lines Figure 8. Display Frame Format Figure 9 illustrates the timing of all output signals as a function of window and fast–blanking features. Line 3 of all three characters is used to illustrate the timing signals. The shaded area depicts the window area. The characters on the left and right appear identical except for the FBKGC bit. The middle character does not have a window as its background. Notice that signal HTONE is active only in the window area. Timing of the signal FBKG depends on the configuration of the FBKGC bit. The configuration of the FBKGC bit affects only the FBKG signal timing; it has no effect on the timing of HTONE. Waveform ‘R, G, or B’, which is the actual waveform at R, G, or B pin, is the logical OR of waveform ‘character R, G, or B’ and waveform ‘window R, G, or B’. ‘Character R, G, or B’ and ‘window R, G, or B’ are internal signals for illustra- tion purpose only. Also notice that HTONE has exactly the same waveform as ‘window R, G, or B’. Figure 9. Timing of Output Signals as a Function of Window and FBKGC Bit Features FONT Icon Combination MC141540 contains 128–character ROM. The user can create an on–screen menu based on those characters and icons. Addresses $00 and $7F are predefined characters. They cannot be modified in any MOSDs. ROM CONTENT Figures 10 – 13 show the ROM content of MC141540. Mask ROM is optional for custom parts. |
Số phần tương tự - MC141540P4 |
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Mô tả tương tự - MC141540P4 |
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