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Motore di ricerca datesheet componenti elettronici |
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H8S/2214 Scheda tecnica(PDF) 574 Page - Renesas Technology Corp |
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H8S/2214 Scheda tecnica(HTML) 574 Page - Renesas Technology Corp |
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574 / 936 page  Section 12 Serial Communication Interface (SCI) Rev.4.00 Sep. 18, 2008 Page 514 of 872 REJ09B0189-0400 Transfer direction Bit 0 Serial data Serial clock 1 frame TDRE TEND Bit 1 Bit 7 Bit 0 Bit 1 Bit 7 Bit 6 Data written to TDR and TDRE flag cleared to 0 in TXI interrupt service routine TEI interrupt request generated TXI interrupt request generated TXI interrupt request generated Figure 12.22 Example of SCI Operation in Transmission (c) Serial data reception (clocked synchronous mode) Figure 12.23 shows a sample flowchart for serial reception. The following procedure should be used for serial data reception. When changing the operating mode from asynchronous to clocked synchronous, be sure to check that the ORER, PER, and FER flags are all cleared to 0. The RDRF flag will not be set if the FER or PER flag is set to 1, and neither transmit nor receive operations will be possible. |
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