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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) 205 Page - Renesas Technology Corp |
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7733 датащи(HTML) 205 Page - Renesas Technology Corp |
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205 / 940 page  SERIAL I/O 7733 Group User’s Manual 8–2 The serial I/O consists of 3 channels: UART0, UART1 and UART2. They each have a dedicated timer for generating a transfer clock and can operate independently. 8.1 Overview UARTi (i = 0 to 2) has the following two operating modes: clock synchronous serial I/O and clock asynchronous serial I/O (UART) modes. Except for a few functions in the clock synchronous serial I/O mode, UART0, UART1 and UART2 have the same functions. q Clock synchronous serial I/O mode Transmitter and receiver use the same clock as a transfer clock. Transfer data has a length of 8 bits. q Clock asynchronous serial I/O (UART) mode Transfer rate and transfer data format can arbitrarily be set. The transfer data length can be selected from the following three types: 7 bits, 8 bits, and 9 bits. Figure 8.1.1 shows the transfer data formats in each operating mode. Table 8.1.1 shows the differences between UART0, UART1 and UART2. 8.1 Overview Fig. 8.1.1 Transfer data formats in each operating mode s Clock synchronous serial I/O mode s UART mode Transfer data length : 7 bits Transfer data length : 8 bits Transfer data length : 9 bits |
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