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ST10F272Z2Q3 数据表(PDF) 74 Page - STMicroelectronics |
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ST10F272Z2Q3 数据表(HTML) 74 Page - STMicroelectronics |
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74 / 189 page  Serial channels ST10F272Z2 74/189 Table 45 and Table 46 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 8M Baud. Table 45. 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 150 ns 0002h 5M Baud 200 ns 0003h 2.5M Baud 400 ns 0007h 1M Baud 1 µs 0013h 100K Baud 10 µs 00C7h 10K Baud 100 µs07CFh 1K Baud 1 ms 4E1Fh 306 Baud 3.26 ms FF4Eh Table 46. 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 125 ns 0003h 4M Baud 250 ns 0007h 1M Baud 1 µs 001Fh 100K Baud 10 µs 013Fh 10K Baud 100 µs0C7Fh 1K Baud 1 ms 7CFFh 489 Baud 2.04 ms FF9Eh |
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