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M35046-059FP 데이터시트(PDF) 14 Page - Mitsubishi Electric Semiconductor |
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M35046-059FP 데이터시트(HTML) 14 Page - Mitsubishi Electric Semiconductor |
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14 / 40 page ![]() MITSUBISHI MICROCOMPUTERS M35046-XXXSP/FP SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS 14 REGISTER SUPPLEMENTARY DESCRIPTION (1) Setting external clock input mode (by use of EXCK0 (12016) and EXCK1 (12316)) Two modes given below are available for the external clock sig- nal input. (the settings (EXCK1, EXCK0) = (0, 1), (1, 0) are forbid- den.) (a) When (EXCK1, EXCK0) = (0, 0), FOSC = 20 to 30 MHz Input from the TCK pin a constant-period continuous external clock that synchronizes with the horizontal synchronization signal. And input from HOR pin a constant-period continuous horizontal synchronous signal. Never stop inputting the clock while displaying. Do not have to set a display frequency because the clock just as it is entered from outside is used as the display clock. (b) When (EXCK1, EXCK0) = (1, 1), FOSC = 20 to 80 MHz Input from the TCK pin a constant-period continuous external clock that synchronizes with the horizontal synchronization signal. Never stop inputting the clock while displaying. Be sure to set a display frequency because the internal clock made to synchronize with the clock input from outside is used as the display clock (see the next page). External clock Horizontal synchronous signal (Example for input) |
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