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H838024R Folha de dados(PDF) 19 Page - Renesas Technology Corp |
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H838024R Folha de dados(HTML) 19 Page - Renesas Technology Corp |
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19 / 697 page ![]() Rev. 7.00 Mar 10, 2005 page xix of xlii Item Page Revision (See Manual for Details) 10.2.8 Bit Rate Register (BRR) Table 10.5 Maximum Bit Rate for Each Frequency (Asynchronous Mode) 350 Table amended Setting OSC (MHz) φφφφ (MHz) Maximum Bit Rate (bit/s) n N 0.0384* 0.0192 600 0 0 2 1 31250 0 0 2.4576 1.2288 38400 0 0 4 2 62500 0 0 10 5 156250 0 0 16 8 250000 0 0 20 10 312500 0 0 10.2.8 Bit Rate Register (BRR) Table 10.6 Examples of BRR Settings for Various Bit Rates (Synchronous Mode) (2) 352 Table amended φ 10 MHz Bit Rate (bit/s) n N Error 200 0 12499 0 250 2 624 0 300 0 8332 0 500 0 4999 0 1K 0 2499 0 2.5K 0 999 0 5K 0 499 0 10K 0 249 0 25K 0 99 0 50K 0 49 0 100K 0 24 0 250K 0 9 0 500K 0 4 0 1M — — — Notes amended Notes: The value set in BRR is given by the following equation: φ N = (4 • 2 2n • B) – 1 where B: Bit rate (bit/s) N: Baud rate generator BRR setting (0 ≤ N ≤ 255) φ: System clock frequency n: Baud rate generator input clock number (n = 0, 2, or 3) (The relation between n and the clock is shown in table 10.7.) |
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