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ST10F271Z1 数据表(PDF) 70 Page - STMicroelectronics |
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ST10F271Z1 数据表(HTML) 70 Page - STMicroelectronics |
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70 / 185 page  Serial channels ST10F271Z1 70/185 Table 44 and Table 45 list some possible Baud rates against the required reload values and the resulting bit times for 40 MHz and 64 MHz CPU clock respectively. The maximum is anyway limited to 8 Mbaud. Table 44. SSC synchronous baud rate and reload values (fCPU = 40 MHz) Baud rate Bit time Reload value Reserved --- 0000h Can be used only with fCPU = 32 MHz (or lower) --- 0001h 6.6 Mbaud 150 ns 0002h 5 Mbaud 200 ns 0003h 2.5 Mbaud 400 ns 0007h 1 Mbaud 1 µs 0013h 100 Kbaud 10 µs 00C7h 10 Kbaud 100 µs07CFh 1 Kbaud 1 ms 4E1Fh 306 baud 3.26 ms FF4Eh Table 45. SSC synchronous baud rate and reload values (fCPU = 64 MHz) Baud rate Bit time Reload value Reserved --- 0000h Can be used only with fCPU = 32 MHz (or lower) --- 0001h Can be used only with fCPU = 48 MHz (or lower) --- 0002h 8 Mbaud 125 ns 0003h 4 Mbaud 250 ns 0007h 1 Mbaud 1 µs 001Fh 100 Kbaud 10 µs 013Fh 10 Kbaud 100 µs0C7Fh 1 Kbaud 1 ms 7CFFh 489 baud 2.04 ms FF9Eh |
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