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M38B53M4-059FP Datasheet(PDF) 138 Page - Mitsubishi Electric Semiconductor |
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M38B53M4-059FP Datasheet(HTML) 138 Page - Mitsubishi Electric Semiconductor |
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138 / 355 page ![]() 2-50 38B5 Group User’s Manual APPLICATION 2.3 Serial I/O 2.3.5 Serial I/O1 application examples (1) Output of serial data (control of peripheral IC) Outline : Serial communication is performed, connecting ports with the CS pin of a peripheral IC. Figure 2.3.20 shows a connection diagram, and Figure 2.3.21 shows a timing chart. Fig. 2.3.20 Connection diagram Specifications : • Use of serial I/O1 (Not using automatic transfer function) • Synchronous clock frequency : 131 kHz (f(XIN) = 4.19 MHz is divided by 32) • Transfer direction : LSB first • Not use of serial I/O1 interrupt • Port P62 is connected to the CS pin (“L” active) of the peripheral IC for transmission control; the output level of port P62 is controlled by software. Fig. 2.3.21 Timing chart P62 P52/SCLK11 P51/SOUT1 38B5 groupPeripheral IC CS CLK DATA CS CLK DATA CS CLK DATA DO0 DO1 DO2 DO3 |
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