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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8/3028F 数据表(PDF) 527 Page - Renesas Technology Corp |
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H8/3028F 数据表(HTML) 527 Page - Renesas Technology Corp |
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527 / 923 page  Rev. 2.00, 09/03, page 497 of 890 Figure 13.13 shows an example of SCI receive operation using a multiprocessor format. ID2 Data2 Idle (mark) state Not own ID, so MPIE bit is set to 1 again a. Own ID does not match data b. Own ID matches data D0 D1 D7 1 1 0 Start bit Start bit Stop bit Stop bit 0 D0 D1 D7 0 1 1 Data (ID1) Data (data1) Start bit Stop bit Stop bit Data (data1) MPIE Idle (mark) state 1 MPB RDRF RDR value RDR value RXI interrupt request (multiprocessor interrupt) MPB detection MPIE = 0 RXI interrupt handler reads RDR data and clears RDRF flag to 0 No RXI interrupt request, RDR not updated ID1 MPB D0 D1 D7 1 1 0 Start bit 0 D0 D1 D7 0 1 1 Data (ID2) MPIE 1 MPB RDRF RXI interrupt request (multiprocessor interrupt) RXI interrupt handler reads RDR data and clears RDRF flag to 0 Own ID, so receiving continues, with data received by RXI interrupt handler MPB ID1 MPIE bit is set to 1 again MPB detection MPIE = 0 Figure 13.13 Example of SCI Receive Operation (8-Bit Data with Multiprocessor Bit and One Stop Bit) |
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