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SH7041A Datasheet(PDF) 562 Page - Renesas Technology Corp |
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SH7041A Datasheet(HTML) 562 Page - Renesas Technology Corp |
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562 / 923 page ![]() 524 Transmitting Serial Data (Synchronous Mode): Figure 14.18 shows a sample flowchart for transmitting serial data and indicates the procedure to follow. 1.SCI initialization: Set the TxD pin function with the PFC. 2.SCI status check and transmit data write: Read SSR, check that the TDRE flag is 1, then write transmit data in TDR and clear the TDRE flag to 0. 3.To continue transmitting serial data: After checking that the TDRE flag is 1, indicating that data can be written, write data in TDR, then clear the TDRE flag to 0. When the DMAC or DTC is activated by a transmit-data-empty interrupt request (TxI) to write data in TDR, the TDRE flag is checked and cleared automatically. |
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