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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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H8S2245 датащи(PDF) 479 Page - Renesas Technology Corp |
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H8S2245 датащи(HTML) 479 Page - Renesas Technology Corp |
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479 / 818 page  Section 12 Serial Communication Interface (SCI) Rev.3.00 Mar. 26, 2007 Page 437 of 772 REJ09B0355-0300 Wait <Transfer completion> Start initialization Set data transfer format in SMR and SCMR [1] Set CKE1 and CKE0 bits in SCR (TE, RE bits 0) No Yes Set value in BRR Clear TE and RE bits in SCR to 0 [2] [3] Set TE and RE* bits in SCR to 1, and set RIE, TIE, TEIE, and MPIE bits [4] 1-bit interval elapsed? [1] Set the clock selection in SCR. Be sure to clear bits RIE, TIE, TEIE, and MPIE, and bits TE and RE, to 0. When the clock is selected in asynchronous mode, it is output immediately after SCR settings are made. [2] Set the data transfer format in SMR and SCMR. [3] Write a value corresponding to the bit rate to BRR. Not necessary if an external clock is used. [4] Wait at least one bit interval, then set the TE bit or RE bit in SCR to 1. Also set the RIE, TIE, TEIE, and MPIE bits. Setting the TE and RE bits enables the TxD and RxD pins to be used. Note: * Perform this set operation with the RxD pin in the 1 state. If the RE bit is set to 1 with the RxD pin in the 0 state, it may be misinterpreted as a start bit. Figure 12.4 Sample SCI Initialization Flowchart |
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