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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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M38B53M4-059FP 데이터시트(PDF) 152 Page - Mitsubishi Electric Semiconductor |
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M38B53M4-059FP 데이터시트(HTML) 152 Page - Mitsubishi Electric Semiconductor |
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152 / 355 page  2-64 38B5 Group User’s Manual APPLICATION 2.3 Serial I/O (2) Output of serial data (control of peripheral IC) Outline : Serial communication is performed, connecting port P57 with the CS pin of a peripheral IC. Figure 2.3.39 shows a connection diagram, and Figure 2.3.40 shows a timing chart. Fig. 2.3.39 Connection diagram Specifications : • Use of serial I/O2 in clock synchronous serial I/O • Synchronous clock frequency : 125 kHz (f(X IN) = 4 MHz is divided by 32) • Transfer direction : LSB first • Not use of receive/transmit interrupts of serial I/O2 • Port P57 is connected with the CS pin (“L” active) of the peripheral IC for transmission control; the output level of port P57 is controlled by software. Fig. 2.3.40 Timing chart P57 SCLK21 TxD 38B5 groupPeripheral IC CS CLK DATA CS CLK DATA CS CLK DATA DO0 DO1 DO2 DO3 |
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