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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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M16C/62M Fiches technique(PDF) 142 Page - Renesas Technology Corp |
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M16C/62M Fiches technique(HTML) 142 Page - Renesas Technology Corp |
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142 / 615 page  Mitsubishi microcomputers M16C / 62A Group SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Clock synchronous serial I/O mode 1-123 (a) Polarity select function As shown in Figure 1.16.12, the CLK polarity select bit (bit 6 at addresses 03A416, 03AC16, 037C16) allows selection of the polarity of the transfer clock. • When CLK polarity select bit = “1” Note 2: The CLKi pin level when not transferring data is “L”. D1 D2 D3 D4 D5 D6 D7 D1 D2 D3 D4 D5 D6 D7 D0 D0 TXDi RXDi CLKi • When CLK polarity select bit = “0” Note 1: The CLKi pin level when not transferring data is “H”. D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 D0 TXDi RXDi CLKi Figure 1.16.12. Polarity of transfer clock (b) LSB first/MSB first select function As shown in Figure 1.16.13, when the transfer format select bit (bit 7 at addresses 03A416, 03AC16, 037C16) = “0”, the transfer format is “LSB first”; when the bit = “1”, the transfer format is “MSB first”. Figure 1.16.13. Transfer format LSB first • When transfer format select bit = “0” D0 D0 D1 D2 D3 D4 D5 D6 D7 D1 D2 D3 D4 D5 D6 D7 TXDi RXDi CLKi • When transfer format select bit = “1” D6 D5 D4 D3 D2 D1 D0 D7 D7 D6 D5 D4 D3 D2 D1 D0 TXDi RXDi CLKi MSB first Note: This applies when the CLK polarity select bit = “0”. |
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