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TMP93CS44 датащи(PDF) 136 Page - Toshiba Semiconductor |
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TMP93CS44 датащи(HTML) 136 Page - Toshiba Semiconductor |
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136 / 224 page ![]() TMP93CS44/S45 2004-02-10 93CS44-134 Table 3.9.2 Selection of UART Transfer Rate (1) (when baud rate generator is used) Unit (kbps) fc [MHz] Input Clock Frequency Divisor φT0 (4/fc) φT2 (16/fc) φT8 (64/fc) φT32 (256/fc) 1 153.600 38.400 9.600 2.400 2 76.800 19.200 4.800 1.200 4 38.400 9.600 2.400 0.600 8 19.200 4.800 1.200 0.300 9.830400 16 9.600 2.400 0.600 0.150 5 38.400 9.600 2.400 0.600 12.288000 10 19.200 4.800 1.200 0.300 1 230.400 57.600 14.400 3.600 3 76.800 19.200 4.800 1.200 6 38.400 9.600 2.400 0.600 14.745600 12 19.200 4.800 1.200 0.300 7 38.400 9.600 2.400 0.600 17.2032 14 19.200 4.800 1.200 0.300 2 153.600 38.400 9.600 2.400 4 76.800 19.200 4.800 1.200 8 38.400 9.600 2.400 0.600 19.6608 16 19.200 4.800 1.200 0.300 Note 1: Transfer rate in I/O interface mode is 8 times faster than the values given in the above table. Note 2: This table is calculated when fc is selected as a system clock, fc/1 as a clock gear, and the system clock as a prescaler clock. Table 3.9.3 Selection of UART Transfer Rate (2) (when timer 2 (input clock φT1) is used) Unit (kbps) fc TREG2 19.6608 MHz 14.7456 MHz 12.288 MHz 12 MHz 9.8304 MHz 8 MHz 6.144 MHz 1H 153.6 115.2 96 76.8 62.5 48 2H 76.8 57.6 48 38.4 31.25 24 3H 51.2 38.4 32 31.25 16 4H 38.4 28.8 24 19.2 12 5H 30.72 23.04 19.2 9.6 8H 19.2 14.4 12 9.6 6 AH 15.36 11.52 9.6 4.8 10H 9.6 7.2 6 4.8 3 14H 7.68 5.76 4.8 2.4 How to calculate the transfer rate (when timer 2 is used): Transfer rate = Note 1: Timer 2 match detect signal cannot be used as the transfer clock in I/O interface mode. Note 2: This table is calculated when fc is selected as a system clock, fc/1 as a clock gear, and the system clock as a prescaler clock. The clock frequency selected by the register SYSCR0<PRCK1:0> TREG2 × 8 × 16 (when timer 2 (input clock φT1) is used) |
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