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ST10F271 数据表(PDF) 71 Page - STMicroelectronics |
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ST10F271 数据表(HTML) 71 Page - STMicroelectronics |
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71 / 173 page  ST10F271 Serial channels 71/173 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 8Mbaud. 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 6.6M Baud 150ns 0002h 5M Baud 200ns 0003h 2.5M Baud 400ns 0007h 1M Baud 1 µs 0013h 100K Baud 10 µs 00C7h 10K Baud 100 µs07CFh 1K Baud 1ms 4E1Fh 306 Baud 3.26ms 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 8M Baud 125ns 0003h 4M Baud 250ns 0007h 1M Baud 1 µs 001Fh 100K Baud 10 µs 013Fh 10K Baud 100 µs0C7Fh 1K Baud 1ms 7CFFh 489 Baud 2.04ms FF9Eh |
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