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M30201 Fiches technique(PDF) 83 Page - Mitsubishi Electric Semiconductor |
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M30201 Fiches technique(HTML) 83 Page - Mitsubishi Electric Semiconductor |
83 / 159 page Mitsubishi microcomputers M30201 Group SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Clock synchronous serial I/O mode 83 (a) Polarity select function As shown in Figure 1.76, the CLK polarity select bit (bit 6 at addresses 03A416) allows selection of the polarity of the transfer clock. Figure 1.76. Polarity of transfer clock (b) LSB first/MSB first select function As shown in Figure 1.77, when the transfer format select bit (bit 7 at addresses 03A416) = “0”, the transfer format is “LSB first”; when the bit = “1”, the transfer format is “MSB first”. Figure 1.77. 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 TXD0 RXD0 CLK0 • When transfer format select bit = “1” D6 D5 D4 D3 D2 D1 D0 D7 D7 D6 D5 D4 D3 D2 D1 D0 TXD0 RXD0 CLK0 MSB first Note: This applies when the CLK polarity select bit = “0”. • When CLK polarity select bit = “1” Note 2: The CLK0 pin level when not transferring data is “L”. D1 D2 D3 D4 D5 D6 D7 D1 D2 D3 D4 D5 D6 D7 D0 D0 TXD0 RXD0 CLK0 • When CLK polarity select bit = “0” Note 1: The CLK0 pin level when not transferring data is “H”. D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 D0 TXD0 RXD0 CLK0 |
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