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HT66F20 Datasheet(PDF) 198 Page - Holtek Semiconductor Inc |
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HT66F20 Datasheet(HTML) 198 Page - Holtek Semiconductor Inc |
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198 / 250 page  HT66F20/HT66F30/HT66F40/HT66F50/HT66F60 HT66FU30/HT66FU40/HT66FU50/HT66FU60 Rev. 1.20 198 June 4, 2010 Baud Rate K/BPS Baud Rates for BRGH=1 fCLKI=4MHz fCLKI=7.159MHz BRG Kbaud Error (%) BRG Kbaud Error (%) 0.3 ¾¾¾¾¾¾ 1.2 207 1.202 0.16 185 1.203 0.23 2.4 103 2.404 0.16 92 2.406 0.23 4.8 51 4.808 0.16 46 4.760 -0.83 9.6 25 9.615 0.16 22 9.727 1.32 19.2 12 19.231 0.16 11 18.643 -2.90 38.4 6 35.714 -6.99 5 37.286 -2.90 57.6 3 62.5 8.51 3 55.930 -2.90 115.2 1 125 8.51 1 111.86 -2.90 250 0 250 0 ¾¾¾ Baud Rates and Error Values for BRGH = 1 · BRG Register Bit 76543210 Name BRG7 BRG6 BRG5 BRG4 BRG3 BRG2 BRG1 BRG0 R/W R/W R/W R/W R/W R/W R/W R/W R/W POR xxxxxxxx ²x²: unknown Bit 7~0 BRG7~BRG0: Baud Rate values By programming the BRGH bit in UCR2 Register which allows selection of the related formula described above and programming the required value in the BRG register, the required baud rate can be setup. |
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