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M35047 датащи(PDF) 21 Page - Mitsubishi Electric Semiconductor |
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M35047 датащи(HTML) 21 Page - Mitsubishi Electric Semiconductor |
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21 / 50 page ![]() MITSUBISHI MICROCOMPUTERS M35047-XXXSP/FP SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS 21 (2) To set display frequency range Whenever setting display frequency (when EXCK1 = "0", EXCK0 = "1", or EXCK1 = "1", EXCK0 = "1"), always set the display frequency range in accordance with the display frequency. This range is set from DIVS0, DIVS1, DIVS2, RSEL0 and RSEL1 (address 12116). Frequency ranges are given here below. (3) Notes on setting display frequency To change external clock (display) frequency or horizontal syn- chronization frequency, always use the following procedures. To set EXCK1 = "0", EXCK0 = "1" (a) Turn the display OFF. … DSPON (address 12916) = "0" (b) Set the display frequency. … Set from DIV10 to DIV0(address 12016) , DIVS0, DIVS1, DIVS2, RSEL0 and RSEL1 (address 12116). (c) Wait 20 ms while the horizontal synchronization signal is being input. (d) Turn the display ON. … DSPON (address 12916) = "1" To set EXCK1 = "1", EXCK0 = "1" (a) Turn the display OFF. … DSPON (address 12916) = "0" (b) Set the display frequency. … Set from DIV10 to DIV0(address 12016) , DIVS0, DIVS1, DIVS2, RSEL0 and RSEL1 (address 12116). (c) Wait 20 ms while the horizontal synchronization signal and external clock are being input. (d) Turn the display ON. … DSPON (address 12916) = "1" RSEL1 0 0 1 1 0 0 1 0 0 1 1 0 0 1 0 0 RSEL0 1 0 1 0 1 0 0 1 0 1 0 1 0 0 1 0 DIVS1 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 DIVS0 0 0 1 1 1 1 0 0 0 1 1 1 1 0 0 0 Display frequency range MHz 90.00 to 100.00 80.00 to 90.50 73.33 to 80.67 66.67 to 74.00 60.00 to 67.33 53.33 to 60.67 50.00 to 54.00 45.00 to 50.50 40.00 to 45.50 36.67 to 40.33 33.33 to 37.00 30.00 to 33.67 26.67 to 30.33 25.00 to 27.75 22.50 to 25.25 20.00 to 22.75 DIVS2 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 |
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