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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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7733 датащи(PDF) 254 Page - Renesas Technology Corp |
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7733 датащи(HTML) 254 Page - Renesas Technology Corp |
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254 / 940 page  SERIAL I/O 7733 Group User’s Manual 8–51 8.4 Clock asynchronous serial I/O (UART) mode Fig. 8.4.4 How to write data after transmission is started [When not using interrupts] [When using interrupts] A UARTi transmission interrupt request occurs when the UARTi transmission buffer register becomes empty. UARTi transmission interrupt UART0 transmission buffer register (addresses 33 16, 3216) UART1 transmission buffer register (addresses 3B 16, 3A16) UART2 transmission buffer register (addresses 67 16, 6616) b15 b8 Writing of the next transmit data Transmit data is set here. b7 b0 g This diagram indicates bits and registers required for processing. Refer to Figures 8.4.6, 8.4.7 and 8.4.8 for details about the change of flag status and the occurrence timing of an interrupt request. UART0 transmit/receive control register 1 (address 35 16) UART1 transmit/receive control register 1 (address 3D 16) UART2 transmit/receive control register 1 (address 69 16) b7 b0 Transmission buffer empty flag 0: Data is present in the transmission buffer register. 1: No data is present in the transmission buffer register. (Next transmit data can be written.) Checking the status of the UARTi transmission buffer register 1 |
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