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STPM32 数据表(PDF) 75 Page - STMicroelectronics |
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STPM32 数据表(HTML) 75 Page - STMicroelectronics |
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75 / 121 page  DS10272 Rev 8 75/121 STPM32, STPM33, STPM34 Theory of operation 121 Table 32 summarizes the above calculation of the register value to select some typical baud rates: 8.6.4 UART/SPI status register and interrupt control register At row 20, at read address 0x28, the register is responsible for holding the status of UART/SPI peripherals of the STPM3x device. Setting the correspondent bit in IRQ CR the interrupt mask raises an interrupt on both INT1, INT2 pins based on the peripheral status. Table 32. Baud rate register examples Baud rate BRDIV BRRI BRRF Register value 2400 416.666667 416 = 0x1A0 11 = 0xB 1A0B 9600 104.166667 104 = 0x68 3 = 0x3 683 19200 52.0833333 52 = 0x34 1 = 0x1 341 57600 17.3611111 17 = 0x11 6 = 0x6 116 115200 8.68055556 8 = 0x8 11 = 0xB 8B 230400 4.34027778 4 = 0x4 5 = 0x5 45 460800 2.17013889 2 = 0x2 3 = 0x3 23 |
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