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M38045F1HKP датащи(PDF) 199 Page - Renesas Technology Corp |
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M38045F1HKP датащи(HTML) 199 Page - Renesas Technology Corp |
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199 / 387 page ![]() 2-75 APPLICATION 2.4 Serial interface Rev.1.00 Jan 14, 2005 REJ09B0212-0100Z 3804 Group (Spec.H) (4) Communication (transmit/receive) using asynchronous serial I/O (UART) Outline : 2-byte data is transmitted and received, using the asynchronous serial I/O. Port P40 is used for communication control. Figure 2.4.38 shows a connection diagram, and Figure 2.4.39 shows a timing chart. Fig. 2.4.38 Connection diagram (Communication using UART) Specifications : • Serial I/O1 is used (UART is selected). • Transfer bit rate : 9600 bps (f(XIN) = 4.9152 MHz is divided by 512) • Communication control using port P40 (The output level of port P40 is controlled by software.) • 2-byte data is transferred from the transmitting side to the receiving side at intervals of 10 ms generated by the timer. Fig. 2.4.39 Timing chart (using UART) Transmitting side P40 P40 Receiving side TXDRXD 3804 group (Spec. H) 3804 group (Spec. H) P40 TXD1 10 ms D0 D1 D2 D3 D4 D5 D6 D7 ST SP(2) D0 D1 D2 D3 D4 D5 D6 D7 ST SP(2) D0 ST • • • • • • • • |
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