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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM8S датащи(PDF) 360 Page - STMicroelectronics |
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STM8S датащи(HTML) 360 Page - STMicroelectronics |
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360 / 467 page  Universal asynchronous receiver transmitter (UART) RM0016 360/467 DocID14587 Rev 14 Impact of clock deviation on maximum baud rate The choice of the nominal baud rate (UARTDIVNOM) will influence both the quantization error (DQUANT) and the measurement error (DMEAS). The worst case occurs for UARTDIVMIN. Consequently, at a given CPU frequency, the maximum possible nominal baud rate (LPRMIN) should be chosen with respect to the maximum tolerated deviation given by the equation: DTRA + 1 / (2*UARTDIVMIN) + DREC + DTCL < 3.75% Example: A nominal baud rate of 20 Kbits/s at TCPU = 125 ns (8 MHz) leads to UARTDIVNOM = 25d. UARTDIVMIN = 25 - 0.15*25 = 21.25 DQUANT = 1 / (2*UARTDIVMIN) = 0.0015% Figure 138. Bit sampling in reception mode 22.4.4 LIN mode selection Table 58. LIN mode selection LINE LSLV LASE Meaning 0 00 LIN mode disabled 1 LIN Master Mode 1 0 LIN Slave Mode with Automatic resynchronization disabled 1 LIN Slave Mode with Automatic resynchronization enabled |
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